Automotive, General Purpose and Signal Relays
Definitions

Definitions
General  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . page 2
Definitions  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . page 3
Handling, Processing, Testing and Use
Handling/Logistics .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . page 16
Processing .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . page 16
Testing .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . page 18
Use  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . page 19

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

1Automotive, General Purpose and Signal Relays
Definitions (Continued)

GeneralWhile TE Connectivity and its affiliates have made every reasonable effort toconfirm the accuracy of the information contained in datasheets and catalogs, TE Connectivity cannot assure that this information is error free. For
this reason TE Connectivity does not make any representation or offer any
guarantee that such information is accurate, correct, reliable or current ordoes not infringe any intellectual property rights. TE Connectivity reserves
the right to make any adjustments to the information at any time.
TE Connectivity expressly disclaims any implied warranty regarding
the information contained in the datasheets and catalogs, including,but not limited to, the implied warranties of merchantability or fitness
for a particular purpose. TE Connectivitys only obligations and liability
with respect to its products are governed solely by the TE Connectivitys Standard Terms and Conditions of Sale for these products or therespective written agreement under which the products are supplied.

TE CONNECTIVITY WILL IN NO CASE BE LIABLE IN ANY CIRCUMSTANCES FOR ANY INCIDENTAL, INDIRECT, CONSEQUENTIAL
DAMAGES OR LOSS OF PROFITS ARISING FROM OR IN CONNECTION WITH THE INFORMATION CONTAINED IN ITS DATASHEETS AND
CATALOGS OR IN CONNECTION WITH ITS PRODUCTS, INCLUDING,
BUT NOT LIMITED TO, THE SALE, RESALE, USE OR MISUSE OF ITSPRODUCTS. USERS SHOULD RELY ON THEIR OWN JUDGMENT TOEVALUATE THE SUITABILITY OF A PRODUCT FOR A CERTAIN PURPOSE AND TEST EACH PRODUCT FOR ITS INTENDED APPLICATION.

Technical data
Unless otherwise stated, the stated technical data are based on laboratory
tests under standardized conditions and are within the conditions of normal
use for these components. The vast number of influencing factors does notallow TE to test its products for all imaginable applications and processes.
Furthermore, the large number of possible variations within a relay family
makes it impossible to give a comprehensive description of the different
characteristics for all variants in one datasheet. Typical data are derived fromthe standard versions.
The decision on the suitability of a specific component is solely responsibilityof the user. To ensure the suitability of the product for a specific application
the user has to test these products before the use under the most stringent
conditions they will be exposed to in the actual application. Taking into
consideration the aspects of operational availability and safety, the user has
to rate the actual service life in an adequate relation to the expected life of
the relay.
The use of the relay beyond its specified characteristics or beyond sufficiently tested life expectancy bears the risk of dangerous conditions; theuser has to prevent such conditions by adequate measures, being entirely
responsible in case of non-observance.

Specification
In order to improve performance and quality, we continuously develop our
products. We reserve the right to change technical parameters and productspecifications. The technical data listed are for description purposes of thecomponents only and are not an agreement and do not guarantee specificcharacteristics and parameters; for detailed questions, please contact ourapplication support. Drawings, photos data and descriptions are subject tochange without prior notice.

All product data are intended for users with knowledge and experience inthe application of such specifications. The utilization is at the entire risk of
the user.
The user has to verify the accordance with existing regulations and relevant
standards for the application; in particular with reference to the insulation
requirements as function of applied voltages and ambient conditions.
The standards (e.g. IEC 61810 'Electrical endurance') are based on theprincipal assumption of occurences of malfunctions such as malfunction
to make contact, malfunction to break or as insufficient dielectric strength.
Such malfunctions have to be taken into consideration and must not generate risks. Depending on the specific load, its characteristics and powerin the contact set, a relay malfunction situation may generate various risks
such as malfunction of the equipment and its controls, electrical shock, therisk of excessive heat and fire and others. It is in the entire responsibility of
the user to provide for additional precautions against such possible effects
according to the relevant application standards.
Protection against risks under all operation conditions even in case of
malfunction can only be ensured by the design of the equipment as well
as by application instructions for the end user; it is the responsibility of the
manufacturer of the equipment to take the appropriate measures. Incorrectconnections by the user may lead to risks, faulty operation and abnormal
heating or fire. It is also the responsibility of the manufacturer of the equipment to take appropriate measures to avoid potential danger of electricalshock by preventing access to live parts of the relay including parts as
terminals and accessories.

2

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

TE Connectivity strongly recommends to monitor the life cycle of the productand to verify the relevant failure mode per IEC 61810-1.

Availability
The databooks and datasheets list a broad range of products and thedescriptive part code structure (product code) does allow a large numberof possible variations, but not all possible variations are defined as standard
types in the current product portfolio (product code) and thus may not be
included in the product range. Some products are normally maintained instock for immediate delivery, or are available within 'normal leadtimes forindustry'; however, there may be extended leadtimes for some non-stock
items. Special versions to customer specifications may be supplied.
Additionally, minimum quantity requirements apply and these requirements
may differ from indicated packaging units. Please consult with your TE salesorganization or authorized distributor regarding availability and minimum
order requirements.
Right to change the availability and delivery conditions reserved.
'Definitions', datasheets, product data, application notes and all specifications are subject to change.
TrademarkTE Connectivity, TE connectivity (logo), TE (logo), TE Tyco Electronics (logo),
AXICOM, OEG, P&B, Potter & Brumfield, PRODUCTS UNLIMITED and
SCHRACK are trademarks.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
AC-coil
Relays for direct energization with AC supply. If not otherwise stated, thedata is given as Vrmsfor 50 ​Hz supply.

Bandwidth
The range of frequencies for which the performance falls within the specified
limits.

Adjacent contacts
Insulation parameters between two adjacent contact circuits (poles of arelay), which do not have a conductive connection. The level of insulation
depends on the relays design, rated voltage and ambient conditions.

Bifurcated contact
See > 'Twin contact'.

Ambient temperature (function, in operation)
The temperature in the vicinity of the relay (distance according to IEC ​61810-1).The minimum ambient temperature is the miniumum operating
temperature, the maximum ambient temperature is the maximum operating temperature for the use of the relay or accessory when operated. Thistemperature range should not be exceeded; within the indicated temperature range the ambient temperature does influence the electrical endurance.
Ambient temperature range according to IEC ​61810-1 and indicated in °C.
Unless otherwise stated data is referred to an ambient temperature of 23°C.
Approvals
With the approval label the independent approval agency and/or test houseconfirms the compliance with the relevant product standards and/or certain
product characteristics.
NOTE: the ordering code structure does allow a large number of possible
variations, but not all variations are defined as standard types (ordering
codes) and thus some relays may not be included in the list of approved
relays. It is recommended that users also seek the pertinent approval filesof the agencies/laboratories and review them to ensure that the selected
product is filed and meets the requirements. Technical data and approved
types on request.

B
E

BEAB
CE
CQC

British Electrotechnical Approvals Board, England
Conformité Européenne, marking for specific products
relating to product safety in accordance to European Laws
China Quality Certification Center,
People’sRepublic
RepublicofofChina
China
PeoplesC CSA Canadian Standards Association, Canada
D DEMKO Danmarks Elektriske Materielkontrol, Denmark
Sähkötarkastuskeskus Elinspektionscentralen,
F FIMKO Finnland
Naamloze Vennootschap tot Keuring van,
H KEMA Electrotechnische Materialien, Netherlands
L LLOYD‘s Lloyd’s Register of Shipping
N NEMKO Norges Elektriske Materiellkontroll, Norway
O ÖVE Österreichischer Verband für Elektrotechnik, Austria
Svenska Elektriska Materiellkontrollanstalten AB,
S SEMKO Sweden
S SEV Eidgenössisches Starkstrominspektorat, Switzerlandt TÜV Technischer Überwachungs-Verein, Germany
Underwriters Laboratories, Inc., USA; UL Component
U UL
Recognition Mark for the United States
UL Component Recognition Mark for Canadaz ULUL Component Recognition Mark for the
Z UL
United States and Canada
VDE-Prüfstelle, certificate of conformity with factory
V VDE surveillance, Germany

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Bistable relay, latching relay
In a bistable or latching relay the contacts remain in the last switching position once the coil input voltage is disconnected.
Bistable relays only require a short set respectively reset pulse and do notneed any energization once the switching position changed. Unless otherwise stated the bistable relays can endure a permanent energization.
NOTE: for some relay series a permanent coil power supply is not permitted; in this case the maximum energization duration or the required coil
power reduction is indicated in the respective datasheet.
Bistable relay, switching characteristics
In a bistable relay, the contacts remain in the last switching position after the
input voltage is disconnected.
NOTE: Unlike monostable relays which return to their predefined contact
rest state in case of power supply break down and thus might be showing
a fail safe behaviour, bistable relays do not automatically return to suchpredefined position. Therefore the application and relay control has to be
designed to cover such situations and bistable relays should not be used inapplications that are rated according to ISO/TS 16949 7.5.3 'Product Identification and Traceability'.
NOTE: Even though the bistable relays are leaving production preferrably
in reset contact position, the position of the contact (set position/reset
position) is not defined at delivery unless otherwise stated. The user needs
to check the contact position and to set/reset the relay to the required
position.
BounceAn unintentional phenomenon that can occur during the making or breaking
of a contact circuit when the contact elements touch successively andseparate again before they have reached their final position.
Bounce time
The time from the first to the last closing or opening of a relay contact.
Unless otherwise stated the indicated times are maximum values and are forenergization with rated voltage, without any components in series or parallelto the coil, and at reference temperature. Also see > 'Relay cycles' .
Breaking capacity max.
Product of the switching current and switching voltage (in W for direct current, in VA for alternating current). Also see > 'DC breaking capacity'
Bridging contact
Double contact configuration, where two movable contacts are mechanically connected and operate simultaneously. In a bridge configuration, theload current flows from one stationary contact via the bridge to a second
stationary contact. See also table 'Contact arrangement'.
See > 'Form X contact', 'Form Y contact', 'Form Z contact'.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

3

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Category of protection (IEC ​61810)
The ´Relay Technology Categories´ (IEC ​61810) describe the degree ofsealing of the relay case or its contact unit:
RT ​0:
RT ​I:
RT ​II:RT ​III:

unenclosed relay
Relay not provided with a protective case.
dust protected relay
Relay provided with a case which protects its mechanism fromdust.
flux proof relay
Relay capable of being automatically soldered without allowing
the migration of solder fluxes beyond the intended areas. These
are the contacts, movable parts of the magnetic system and their
immediate environment.
wash tight (washable) relay
Relay capable of being automatically soldered and subsequently
undergoing a washing process to remove flux residues without
allowing the ingress of flux or washing solvents.
The test to evaluate the sealing of the case for wash tight relays is
performed according to the IEC ​60068-2-17, Qc test.
NOTE - Please refer to the 'Processing' section for additional information.
In service this type of relay is sometimes vented to the atmosphere
after soldering or washing process; in this case the requirementswith respect to clearances and creepage distances can change.

RT ​IV:RT ​V:

sealed relay
Relay provided with a case which has no venting to the outside
atmosphere, and having a time constant better than 2x104s inaccordance with IEC ​60068-2-17.
hermetically sealed relay
Sealed relay having an enhanced level of sealing, assuring a time
constant better than 2x106s in accordance with IEC ​60068-2-17.

Coil insulation system according to UL1446
These requirements cover test procedures to be used in the evaluation ofelectrical insulation systems intended for connection to branch circuits rated
600V or less. This standard refers to insulation systems and does not coverindividual insulating materials.
Coil Operative range (graph)
Admissible range of energizing voltage with respect to the ambient temperature. The upper limit is the maximum coil voltage, the lower limit is the operate voltage Umin (coil without pre-energization) and/or the operate voltage
U1 (pre-energized coil).
The diagrams are valid for single mounting of relays without thermal interference and connection wiring according to IEC ​61810-1; unless otherwise
stated the data is indicated without contact load, thus not taking into
account the temperature rise due to the contact current.
The use of a relay with an energizeing voltage other than the rated coil voltage may lead to reduced electrical life (mechanical and dynamic effects).
In case the application requires an energization with other than the rated
coil voltage and a recommended voltage range is indicated, the coil voltage
should be within the recommended voltage range (shaded area) to keep theeffects on electrical life to a minimum.
curve 1: operate-/minimal voltage U0 (without pre-energization)
curve 2: operate-/minimal voltage U1 (pre-energized coil)curve 3: maximum voltage at contact current = 0 ​A
curve 4: limiting voltage U2 at rated contact current Irated
recommended voltage range (shaded area):
the coil voltage should be within the recommended voltage range
to keep adverse effects on electrical life to a minimum.

Changeover contact, CO contact
See > 'Form C contact, CO contact, changeover contact'
China RoHS compliance
See > 'Material substance specification' on TE's Website:
www.te.com/customersupport/rohssupportcenter.
Clearance distance
Shortest distance in air between two conductive parts or between a conductive part and the accessible surface of the relay.
Coil data
The coil data is specified according to IEC ​61810-1.
Unless otherwise indicated the data is given for■ ambient temperature 23°C,■ coil temperature equal to ambient temperature (cold coil, without preenergization),■ 50Hz for AC supply,■ no other devices (e.g. diode) in parallel or in series to the coil
■ single mounting of relays.
Indicated data for the operative range class, is given for the minimum allowed mounting distance.
Unless otherwise stated a duty factor of 100% (permanently operated) is
permissible.

Coil operative range for bistable relays
curve 1: operate voltage at coil temperature equal to ambient temperature
curve 2: minimum reset voltage
curve 3: maximum operate voltage
curve 4: maximum reset voltage
For bistable relays, all curves are given for pulse energization (short energization duration).

Coil inductivity
The inductivity is a nonlinear parameter due to saturation effects anddepends, amongst others, on the position of the armature. The value of therelay coil inductivity depends on the measurement method and its parameters. Therefore the inductivity is not a generally guaranteed parameter; fortechnical questions, please contact our technical support.

405-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Coil power
Power consumption of the coil at rated coil voltage and coil resistance, withcoil temperature at 23°C, given as rated typical value.
Coil resistanceElectrical resistance of the relay coil at reference temperature; this value isindicated for the coil without any other devices in parallel (e.g. coil suppression, diode, etc.).
Coil suppression circuit
Circuit to reduce the inductive switch off voltage peak of the relay coil (EMC
protection, switch off voltage peak). Most of such circuits reduce thearmature release speed, which may decrease the relay lifetime dependingon the application load. Especially diodes or any pn-junction of the electronic
control system in parallel to the coil will significantly reduce the electrical
lifetime. Recommended that relay performance testings to be evaluated withthe suppression that will be used.
Note: unless otherwise specified the indicated relay data refers to coils
without any components in parallel or in series to the coil.
Coil voltage
Voltage applied across the coil terminals.
Coil voltage range
Voltage range at which the relay displays the operating characteristics.
These specified operating characteristics are given for a constant DC supply
or sinusoidal AC supply. Other operating conditions (e.g. pulse control,
ramp voltage, half wave rectifying, etc.) may lead to characteristics otherthan specified.
Coil-contact circuit data
Insulation parameters between the coil system and the contact circuit/system.
Combination of relay and socket, insulation requirements
The relay standard IEC ​61810-1 has an important impact on the combination of a relay and the respective socket. The relay sockets have to comply
with the requirements of IEC ​61984 and the insulation reqirements of theIEC ​61810-1. Even if the socket alone fullfills or exceeds the insulation
reqirements as clearance/creepage for the relay, the combination of a relay
with a socket may reduce the creepage and lead to a lower rated insulation voltage. Hence restrictions for the combination relay-socket may be
the consequence, e.g. a reduction of the voltage range or of the pollution
degree. Especially for miniature multi-pole relay and respective sockets withsmall distance between the contact circuits, these restrictions have a big
impact.
Apart from the insulation properties, the thermal characteristics of the
combination relay and socket are of utmost importance (see > 'Derating
curves'). As sockets from different sources are not directly comparable, thecompliance with the technical specification can only be confirmed for an
approved combination relay-socket. As design details and characteristics
for non TE products are beyond our control, confirmations for technicalparameters and characteristics regarding such combinations is not possible.
Risks as reduced dielectric strength, fire hazard, etc. due to use based on
unclear or omitted data, limitations or restrictions must not be underestimated.
NOTE: We only confirm the characteristics and parameters for the approved
combinations of relays and sockets as indicated in the catalog and datasheets.
Contact arrangement
Different applications require specific switching functions of the relay contacts; various contact arrangements are specified and described in different
ways.

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

The most common are:
Form
Short
description description

NARM
designator

Make contact

Form ANOSPST-NO

Break contact

Form BNC

SPST-NC

Changeover
contact

Form C

CO

SPDT

Double makeon armature

Form U

SPST-NO DM

Double breakon armature

Form VSPST-NC DB

Double makecontact

Form XSPST-NO DM

Double breakcontact

Form Y

SPST-NC DB

Double break,double makecontact

Form Z

SPDT-NC-NO
DB-DM

Triple makecontact

Form 3Circuit symbol

Examples for descriptions of multi- pole configurations:
Multi poleconfigurations

Form
Short
description description

NARM
designator

2 Makecontacts

2 Form A

2 NO

DPST-NO

3 Breakcontacts

3 Form B

3 NC

3PST-NC

4 Changeover
contacts

4 Form C

4 CO

4PDT

Circuit symbol

Abbreviations
NO: normally open, NC: normally closed, CO: changeover
SPST: single pole, single throw, SPDT: single pole, double throw, DPST:
double pole, single throw
Contact current
See >■ 'Rated current'■ 'Limiting making current'■ 'Limiting continuous current'■ 'Limiting short-time current'■ 'Limiting breaking current'.
Contact gap
Shortest distance between the open contact points.
Contact material
The list gives an overview of the most important plating- and contact materials and their use in signal-, automotive and general purpose relays.
The switching capacity of the contacts and the respective electrical endurance depends not only on the contact material but also to a high degree on
the relay design. Decisive for the application therefore is the optimal combination of the mechanical system and the contact material. The characteristics for certain relay types cannot be transferred to other designs, nor can

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

5Automotive, General Purpose and Signal Relays
Definitions (Continued)
these values be used as given limits for existing products.
1) Plating materials:
Fine gold■ best corrosion resistance, not used as solid material because too soft,
high tendency towards cold-welding, not used or only used in combination with a material with resistance against cold welding. Gold alloys(AuNi, AuAg, AuPd, AuCo)■ gold platings ≤ 1 ​µm (gold flashed), only as storage protection, no
protection against aggressive atmosphere.
■ hard gold plated: very good corrosion resistance, low and stable contact resistance at lowest loads, low tendency to cold welding■ dry-circuit switching (switching without current/voltage), recommended
range of application ≥ 1 ​V, 1 ​mA, 50 ​mW.
2) Contact materials:
Silver-Palladium■ high resistance against material transfer in signal DC circuits, low welding tendency, higher contact resistance than Ag■ circuits with medium loads, DC- and AC-circuits, recommended fortelecommunication applications.
Palladium-Ruthenium■ highest resistance against material transfer in signal DC-circuits, lowwelding tendency, higher contact resistance than Ag■ circuits with medium loads, DC- and AC-circuits, recommended fortelecommunication applications.
Silver-Nickel AgNi90/10■ high resistance against electrical wear, low welding tendency, higher
contact resistance than AgNi0.15■ circuits with medium to high loads, DC- and AC-circuits, recommended
range of application ≥ 12 ​V, 10 ​mA.
Fine-grain silver AgNi0.15■ relatively low contact resistance, low resistance against aggressive
atmosphere■ universally applicable in medium and low load range, especially in DCcircuits, recommended range of application ≥ 12 ​V, 10 ​mA.
Silver-Tin-Oxide AgSnO2■ low welding tendency, high wear resistivity with heavy loads, low material transfer■ circuits with high requirements to make- and break currents, DC- andAC loads, recommended range of application ≥ 12 ​V, 100 ​mA.
Tungsten W■ highest melting point, for high switching rates and low ON-time■ as prerun contact in circuits with highest make loads.
Silver-Cadmium-Oxide AgCdO■ compliant with RoHS directive (Directive 2002/95/EC) only under time
limited exception, therefore not recommended for new designs■ low welding tendency, high wear resistance■ for switching of inductive loads, AC-circuits, ≥ 12 ​V, 100 ​mA.

Contact protection circuits
The effect of an electrical arc causes primarily local contact erosion resulting in contact wear and migration and as secondary effect the generationof adverse atmosphere inside the relay (see > 'Electrical arc' and 'Vent hole'in processing section). These effects eventually lead to the end of the usefullife of a relay. To reduce the negative effect of the electrical arc and thus
prolong the life of a relay, contact protection circuits are recommended.
This is especially important for switching of DC applications (e.g. automotive
applications). The user has to ensure the correct design of the protection
circuit in the respective application, as unless designed correctly, the protection circuit may even generate adverse effects.
Contact rating
In context of our datasheets this term is primarily used in context withratings as tested/approved by external approval agencies whereas the term
'electrical endurance' is used primarily for internal test results. See > 'Electrical endurance'.
Indicated contact ratings for direct wiring of relays (according IEC 61810-1);
for relays mounted on sockets or when using connectors deratings may
apply.
Contact resistanceElectrical resistance between the relay terminals of a closed contact,measured with indicated measuring current and indicated source voltage.
The specified contact resistance is reached reliably only above a particularload. Considerably increased contact resistances can occur with smallerloads. After a prolonged period of a steady state operate/release position
or storage of the relay a certain number of cycles are recommended before
measurement of the contact resistance.
According to IEC 61810-7 the following measurement parameters areapplied (for general purpose relays category CC2 is applicable):
Category Load
V
A
CC0
0.03
0.01
CC1
without electrical arc
CC2
with electrical arc

Measurement
V
A
0.03
0.01
10
0.1
30
1

Contact style
On one side indicates the design of the contact point itself , see >■ 'Single button contact'■ 'Twin contact, bifurcated contact'
indicating the contact function, see >■ 'Forcibly guided contact'
as well as the total configuration of the contacts within a relay■ number of poles and■ contact arrangement (see > 'Contact arrangement').
Contact terms

Contact materials for the use in automotive applications:
Current range

Automotive load type(DC load)
Switching and carrying In low power
0.5 A < I < 10 A at 12 V applications
Periodical switching and Long-life indicator
switches
approx. 106 ops,
1 A < I < 10 A at ≥ 12 V
Switching and carrying Lamps, Capacitors
I > 10 A capacitive load
Switching and carrying Motors, Valves
I > 10 A resistive andinductive load
Switching high inrush
Lamp (e.g. H4), SparkI > 100 A
plugs, short circuit

Recommended contact
material
AgNi0.15 or AgSnO2
AgSnO2AgSnO2
AgNi0.15 or AgSnO2
AgSnO2 in special cases:
AgNi20 or
Tungsten pre-contact

Creepage distance
Depending on the insulation design, usually the shortest distance along thesurface of the insulating material between conductive parts according to IEC ​61810-1.
Cross talk
Signal interference between adjacent conductors caused by the pick-up ofstray energy.

605-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
CTI
See > 'Tracking index'.
Cycle
Operation/set and subsequent release/reset of a relay.
Cycle time
Sum of ON and OFF time (make, break and bounce time) of a contact. See
also > 'Duty factor'.
dBm
Relative measure of signal power where the reference 0 dBm is equal to one
milliwatt. See also > 'Decibels'.
DC breaking capacity
Switching of loads at voltage and current below the max. DC load breaking
capacity curve is possible for a limited number of switching operations.
Unless otherwise stated, the indicated curves in the DC breaking capacity
diagram represent the load limit curve II (the arc extinguishes within 10ms
at resistive load). The breaking capacity curve is affected in both positionand shape by the contact material and relay design (contact distance, break
speed of the contacts, etc.). No statement on the electrical endurance canbe derived from these curves. For practical use it is recommended to keepa distinct margin from the DC load breaking capacity curve.
■ Load limit curve (II) The switching arc for loads below this curve extinguishes within 10 ms (the relay is already in release position). Unlessotherwise stated the indicated curve for DC breaking capacity relates tothe load limit curve II■ Load limit curve (I) The switching arc of loads below this load limit curve
extinguishes during the transit time of the moving contact. This limit
is especially important for change over relays, when the NC and NO
contacts are at different voltage levels; if the arc does not extinguishbefore reaching the other contact, the arc will establish a short circuit, asituation that may lead to the destruction of the relay and equipment.
■ Load limit curve for arc-free switching. Load voltage/current combinations below this load limit curve in general cause no arc or an arc withmax. duration of 1ms.
Unless otherwise stated the curves in the graphs refer to a 'load limit curveII'.

I switching current
U switching voltage

switching voltage

U [V]
Umax

load limit curve IIload limit curve I
limit for arc-free switching0

switching current

Imax

Degree of protection - First digit:
The first digit of the IP code indicates the degree that connection isprotected against contact with moving parts and the degree that
equipment is protected against solid foreign bodies intruding into an
enclosure.
0 No special protection
1 Protection from a large part of the body such as hand or from solid
objects greater than 50 ​mm in diameter
2 Protection against objects not greater than 80 ​mm in length and 12 ​mmin diameter
3 Protection from entry by tools, wires, etc., with a diameter or thickness
greater than 2.5 ​mm
4 Protection from entry by solid objects with a diameter or thickness
greater than 1.0 ​mm
5 Protection from the amount of dust that would interfere with the operation of the equipment
6 Dust-tight.
Degree of protection - Second digit:
Second digit indicates the degree of protection of the equipment inside
the enclosure against the harmful entry of various forms of moisture(e.g. dripping, spraying, submersion, etc.)
0 No special protection
1 Protection from vertically dripping water
2 Protection from dripping water when tilted up to 15°
3 Protection from sprayed water
4 Protection from splashed water
5 Protection from water projected from a nozzle
6 Protection against heavy seas, or powerful jets of water
7 Protection against temporary immersion
8 Protection against complete continuous submersion in water (up to 1 ​meter deep for 15 minutes).
Derating curve (sockets and relay-socket sets)
EN61984:2001 table 12: according to this standard the derating curve given
for a specific combination relay-socket and its accessories - indicates the
maximum permissible continuous current (limiting continuous current) of asocket, loaded on all contact circuits, unless otherwise stated supplied with
rated coil voltage, over the entire temperature range, measured in dense
packing (usually 3 relay-socket sets).
In case of reduced duty factor of the contact load or with higher mounting
distance up to single mounting, a higher load current is permissible. Pleasecontact our technical support for specific data. According to the standards
the derating curve is derived from the measured curve by applying a reduction factor of 0.80.

I [A]

Decibel, dB
A relative and dimensionless unit calculated as ten times the logarithm tothe base of 10 of a power ratio.
Degree of protection (IEC ​60529)
Degrees of protection provided by enclosures (IP Code) for electrical equipment.
Under certain circumstances this data is relevant for industrial relays andaccessories. For relays as components (e.g. PCB relays) the IP classification is generally not used, see > Category of protection; there is no direct
correlation between the IP-code and the RT-category.
Definition of degree of protection (IP code) IEC ​60529 outlines an international classification system for the sealing effectiveness of enclosures of electrical equipment against the intrusion into the equipment of foreign bodies(i.e., tools, dust, fingers) and moisture. This classification system utilizes theletters IP (Ingress Protection) followed by two digits.

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Other standards: the test conditions (e.g. UL508) differ from the EN standard, hence under these conditions other temperature/current combinations
may be permissible; please contact our technical support for details.
In case no derating curves are given, the indicated temperature and load
current refer to the approved standards for the specific product and not to
the EN61984.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

7

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Dimensions
Dimensions are indicated in mm and/or inches and are shown for reference
purposes only.
PCB pin dimensions are indicated without solder (pre-tinning).
Dimensions, drawings
Technical drawings for product dimensions are using both ISO projections(ISO Method E or ISO Method A) according to ISO/R 128. In cases ofambiguity the projection is defined by the respective international symbol(see below).
ISO Method E projection - symbol
ISO Method A projection - symbol
DIN-rail
Unless otherwise stated, our products for DIN-rail mounting are designed
and tested for DIN-rails according to TH35-7.5 ​/ ​EN60175.
Use of other rails (e.g. according to TH35-15) is neither tested nor approved.
When mounting the sockets on a DIN-rail, assembling the socket accessories and mounting/dismounting relays provide an adequate temperature(unless otherwise stated -10°C to +40°C) during the mounting process.
Drop test, free fall
Relays are dropped from a specified height onto a solid ground; this simulates the resistance to bad handling e.g. fall from a table. The test is to verify
that the component meets its specification. However we strongly recommend to scrap dropped relays.
Dry switching
Defined as contact category 0 (CC0) according to IEC61810-1: a contact
characterized by a maximum contact voltage of 30mV and a maximum
contact current of 10mA. See also chapter 'Testing / diagnostics of relays'.
Dust-proof relay
Relay with a case to protect against penetration of dust. See > 'Category ofenvironmental protection (IEC ​61810)' - RT I.
Duty factor, duty cycle
Ratio of the duration of energization to the total period in which intermittant
or temporary operation of the relay place. Duty factor is expressed as percentage of the total period at a specified frequency of operation; e.g. 30%
duty cycle means that the relay is operated for 30% during a cycle time.
U

df =
t

ton

ton
x 100 (%)
tcyc

df Duty factor
ton On time
tcyc Cycle time

tcyc
Electrical arc
Is an electric phenomenon caused by plasma current flow between opening
and closing relay contacts. An arc is generated by the electric energy ofthe load circuit (turn off spark) or the voltage gradient at closing contacts,
ionizing the gas between the contacts and thus establishing an electricalconductive path. The stability of the arc depends on various parameterssuch as contact material, air pressure, contact gap, etc.
Apart from positive effect of the electrical arc as limitation of overvoltage
when switching of inductive loads, reduction and dissipation of electricalload energy and electrical cleaning of contact surfaces, the arc locally
produces high temperature and causes contact erosion (also see > 'contact
protection circuits'). Special consideration has to be given to DC and highfrequency AC-circuits where, depending on the conditions (e.g. contactgap) an arc of extended or infinite duration could occur; in this case the relay may be destroyed due to the extreme thermal stress. Also the switchingof different voltages with a generation of an electrical arc and the switchingof reverse polarity on adjacent contact circuits of a multi-pole relay may leadto non-extinguishing arcs.

805-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Electrical endurance
Number of cycles a relay can perform with electrical contact load defined
under specified conditions according IEC 61810-1 and IEC 61810-2. Unlessotherwise specified the electrical endurance refers to:■ NO contact■ AC mains, 50 ​Hz for general purpose relays (schematic for contact
loading A) ; 12 ​VDC for automotive relays■ duty factor 50%■ rated frequency of operation■ resistive load
■ rated voltage (coil)■ contact opening and/or closing not synchronized to line frequency■ ambient temperature 23°C
■ no failsafe behaviour (see > 'Failsafe')■ category of protection RTII - flux proof■ individual mounting of relays without thermal interference and connection wiring according to IEC 61810-1, table 12.
■ relay in upright position (terminals of a print relay pointing downwards).
■ direct wiring of relays (according IEC 61810-1); for relays mounted on
sockets or when using connectors deratings may apply.
Unless otherwise stated, the electrical endurance is specified according toseverity level B according IEC 61810-2. For relay failure modes see also >Failure criteria. Any use beyond the specified electrical endurance is not in
scope of the specified data, the avoidance of such situation requires consideration by the user.
Electrical endurance graph
The electrical endurance graph indicates the typical electrical endurancewith resistive load and 250 ​VAC rated voltage as “Mean Cycles to Failure”(MCTF) according Weibull distribution. These statistical data do not guarantee a minimum value; this data can be used to estimate the MCTF value.
Please note:■ the graph for electrical endurance is only valid for the indicated contact
material (in case no contact material is specified, it is valid for the contact materials as listed in the respective datasheet), it is not permissible
to deduce electrical endurance information for other contact materials.
■ it is not permissible to deduce electrical endurance information by
extrapolation beyond the range indicated by the curve. This applies
especially to the range below 0.5 ​A as at this level the contact wear issmall and other failure modes are dominant.
For details please contact our technical support. Also see > 'Electricalendurance'.
ELV compliance
See > 'Material substance specification' on TE's Website:
www.te.com/customersupport/rohssupportcenter.
Endurance
Electromechanical components as relays, are subject to wear (mechanicaland electrical). For the reliability the typical bath-tub curve applies, hence
singular statistical failure events below typical reliability values may occur.
Environmental data and tests
Relays undergo extensive environmental tests. The selection of tests
depends on the product group and the intended application fields; e.g. forautomotive relays, common environmental tests are:■ cold storage test, IEC 600 68-2-1■ dry heat, IEC 600 68-2-2■ climatic cycling with condensation. EN ISO 6988
■ temperature cycling, IEC 600 68-2-14 Na (shock), IEC 600 68-2-14 Nb■ damp heat cycling, IEC 600 68-2-30 Db variant1■ operational humidity, IEC600 68-2-38■ corrosive gas, IEC 600 68-2-42■ flowing mixed gas corrosion, IEC 600 68-2-60 Ke method 54■ drop test, free fall, IEC 600 68-2-32.
Environmental endurance
Generic term for the relay endurance under different climatic conditions.
Appropriate test conditions are classified in IEC ​60068.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Failure criteria
Set of rules used to decide whether an observed event constitutes a failure.
A contact failure is the occurence of break and/or make malfunctions of acontact under test, exceeding a specified number.
Failure mode
The IEC 61810 defines a relay failure as occurrence of malfunctions, exceeding a specified number:■ malfunction to make■ malfunction to break (contact bridging on a CO contact as a special
form of malfunction to break), or as■ insufficient dielectric strength.
Such malfunctions have to be taken into consideration and must not generate risks. Depending on the specific load, its characteristics and powerin the contact set, a relay malfunction situation may generate various risks
such as malfunction of the equipment and its controls, electrical shock,the risk of excessive heat and fire and others. It is in the responsibility of
the user to provide for additional precautions against such possible effects
according to the relevant application standards.
Standards (e.g. IEC 695-1-1'Guidance for assessing fire hazard of electrotechnical products') are based on the principal assumption of heating
effects and risk of fire in case electrical currents of certain magnitude being
conducted and switched. Our relays are manufactured with self extinguishing plastics corresponding to the up-to-date technology and standards
requirements. Protection against excessive heat and possible spread of fireunder all operation conditions even in case of malfunction can only be ensured by the design of the equipment as well as by application instructions forthe end user; it is the responsibility of the manufacturer of the equipment totake the appropriate measures. Incorrect connections by the user may leadto risks, faulty operation and abnormal heating or fire. It is also the responsibility of the manufacturer of the equipment to take appropriate measures toavoid potential danger of electrical shock by preventing access to live partsof the relay including parts as terminals and accessories.
NOTE: Relays normally do not have a failsafe behaviour. See > 'Failsafe'
Failsafe
Failing behaviour with definite failing characteristic, e.g. component always
fails with contacts do not open. Electromechanical relays normally do nothave a failsafe behaviour
Flux proof/suitable for processing on soldering lines
See > 'Category of environmental protection (IEC ​61810)' - RT II.
Force guided contact
Contact configuration according to EN61810-3 (formerly EN50205) with atleast one NO contact, one NC contact and a mechanically linked system,
designed that the NO and NC contacts within the complete contact set arenever closed at the same time, even in case of malfunction. These relays are
implemented in the control of safety technology for the protection against
damage to persons or objects.
See > 'Relays with force guided contacts'.

Form C contact, CO contact, changeover contact
Compound contact consisting of Form A (NO, make) contact and a Form
B (NC, break) contact with a common terminal. On changing the switch
position, the contact previously closed opens first followed by the closingof the contact that was previously open. For circuit schematic see table in'Contact arrangement'.
Note: in case of a switching arc the NO and NC contact may be temporarily
electrically connected.
Form U contact
Two make contact configuration, with two electrically connected movable
contacts which operate simultaneously. As special version main contact
with pre-contact. See also table 'Contact arrangement'.
Form V contact
Two break contact configuration, with two electrically connected movable
contacts which operate simultaneously. See also table 'Contact arrangement'.
Form X contact
Two make contact configuration with two electrically connected movable
contacts operating simultaneously. There is no external connection to thearmature. Also called bridge contact.
Form Y contact
Two break contact configuration with two electrically connected movable
contacts operating simultaneously. There is no external connection to thearmature. Also called bridge contact.
Form Z contact
A contact configuration with■ two make contacts and■ two break contacts
with two electrically connected movable contacts each operating simultaneously. There is no external connection to the armature. Also called bridge
contact.
Frequency of operation
Number of operation cycles (opening and closing of contacts) per unit oftime. The switching rate is usually indicated for switching under rated load;
unless otherwise stated at ambient temperature 23°C and without any
circuitry in parallel to the coil (no coil suppression circuit, e.g. diode). With
contact loads considerably below rated load a higher frequency of operation
may be admissible. This has to be tested for the specific application. For
further assistance please contact our application support.
Full disconnection
Contact separation for the disconnection of conductors so as to provide theequivalent of basic insulation between those parts intended to be disconnected. NOTE: there are dielectric strength and dimensional requirements
regarding the relay design but also referring to the connection, wiring anddesign on the outside of the relay.

Form 3 contact, triple make contact
Three make contacts configuration with three electrically connected movable contacts operating simultaneously. There is no external connection to thearmature. See also table 'Contact arrangement'.

Halogen content
See > 'Material substance specification' on TE's Website:
www.te.com/customersupport/rohssupportcenter.

Form A contact, NO contact, normally open contact
A contact that is open when the relay is in its release condition (unenergized
position for monostable relays) and which is closed when the relay is in its
operate condition. For circuit schematic see table 'Contact arrangement'.

Immersion cleanable/sealed relays
See > 'Category of protection (IEC ​61810)' - RT III.
Relays which are sealed against the penetration of specified PCB cleaners
or protection lacquers; for more information refer to chapter 'Processing
Information'.

Form B contact, NC contact, normally closed contact
A contact that is closed when the relay is in its release condition (unenergized position for monostable relays) and which is open when the relay is in
its operate condition. For circuit schematic see table 'Contact arrangement'.

Impedance, Z0
Characteristic property of a transmission line describing the ratio between
electric and magnetic fields.

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

9Automotive, General Purpose and Signal Relays
Definitions (Continued)
Industrial relays and accessories
Relays and accessories are designed for use in closed and electrically secure switching cabinets. In these applications lower standard requirements of
the insulating properties of components could apply.
CAUTION: These products are to be handled by trained personnel only.
Initial contact resistanceContact resistance measured at the time of production/final testing. Prolonged storage and adverse environmental conditions (e.g. gases) can lead toincreased resistance values. The effect of electrical cleaning due to sufficientload can bring the contact resistance back to lower levels.
See > 'Contact resistance'.
Initial dielectric strength
Voltage (rms value in AC voltage, 50 ​Hz 1 ​min) the insulation can withstandbetween relay elements that are insulated from one another, measured at
the final production test.
Initial insulation resistanceElectrical resistance (initial product condition) measured by applying a DC
voltage of 500 V between two elements of a component that are insulated
from one another as measured at the final production test.
The requirements according to IEC ​61810-1 are:■ for functional insulation > 2 ​MOhm■ for basic insulation > 2 ​MOhm and■ for reinforced insulation > 7 ​MOhm.
Initial pulse withstand voltage, initital surge voltage resistance
Amplitude of a voltage impulse of short duration with a specified impulse
form (e.g. 1.2/50µs) and polarity applied to test insulation paths in a relay,
especially where relays are subject to overvoltage situations (e.g. effects oflightning).
Insertion cycles
The symbol A indicates that the insertion and extraction must be done
without any load current on the relay/socket contacts.
Unless otherwise stated the accessories are designed for max. 10 insertion
cycles, insertion and extraction without load; A (10).
Insertion loss
The loss in load power due to the insertion of a component at some point
in a transmission system. Generally expressed in decibels as the ratio of
power received at the load before insertion of the apparatus to the powerreceived at the load after insertion.
Insulation
Unless otherwise stated, the insulation characteristics are indicated for therelay component, the design of the application, mounting and wiring also
has to provide for required insulation properties.
In general, the relays are designed to be used within enclosures; the relay
surfaces are not to be accessible for direct contact by the end user. Specificinsulation requirements of the equipment and protection egainst environmental effects need special consideration.
Jump start test
Short time relay use at higher system voltages (like car start after flat vehicle
battery).
Latching relay
See > 'Bistable relay'.
Limiting breaking current
The max switching current the contact is intended to break under specified
load conditions. The switching current must not exceed the indicated rated
current. For DC switching also see > 'DC breaking capacity'.
Limiting continuous current
Is the highest steady state load current a relay or an accessory can withstand continuously while satisfying specified temperature rise requirements;
it is identical with the limiting continuous thermal current Ith.

1005-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

NOTE that this is not necessarily the current that can be switched over the
specified lifetime. Unless otherwise stated the data for relays is given underfollowing condition: all contacts equally loaded with the respective current,
input voltage 110% of nominal coil voltage, max ambient temperature, minimum allowed mounting distance, test conditions according to the heat test
arrangement IEC EC 61810-1 Annex B. In combinations with accessories/
sockets the limiting continuous current is specified by the derating curve(see > 'Derating curve').
Limiting making current, inrush current
The limiting making current expressed as a current with a power factor of
1.0 (resistive load) a contact is able to make under specified conditions; for20 ​ms data expressed as peak value, for 4 s data expressed as rms value.
Unless othwerwise stated the data refers to the Form A contact (NO contact), rated voltage and a current for a duration of max. 20 ​ms for at least
100 cycles or 4 ​s with duty factor of 10%.
Inrush current for some loads can be significantly higher than its specifiedsteady state current. For these load types the inrush current has to be within
the limits for the limiting making current. Typical examples for loads with highinrush currents are all type of lamps (incandescent, halogen, fluorescent,etc.) as well as motors, solenoids, transformers and capacitive loads.
Limiting short-time current, Overload current
This test is done to confirm, that our relays withstand normal overload conditions, e.g. withstand short circuit conditions until a fuse opens.
For automotive applications, current and time are compatible to circuit
protection by a typical automotive fuse according to ISO 8820-3 (2002) asshown in the table below. Relay will carry the specified currents at 23°C
(Irated = rated current as given in contact data section for each relay).
Test current in A
6.00 * Irated
3.50 * Irated
2.00 * Irated
1.35 * Irated
1.10 * Irated

Operating time in seconds
Minimum
Maximum
0.02 s0.20 s0.08 s0.50 s0.25 s5.00 s0.75 s1800 s
100 h
No requirement

For mains fuses and fuses other than automotive, customers have to referto the respective standards (mains condition, prospective short circuit, etc.)
to test for their application.
Limiting voltage (coil)
The highest permissible input voltage (coil voltage) at the reference temperature at which the relay, with continuous energization and, unless otherwise
stated under rated contact load, heats up to its max. permissible coiltemperature.
Load dump
Short relay use at overvoltage (disconnection of the battery during runningengine).
Load dump test
Short relay use under overvoltage conditions (simulated disconnection of
the battery with charging alternator).
Magnetic system
Magnetic systems can be categorized by the switching characteristic■ monostable relays return automatically to the rest position (releasestate) after the coil is de-energized.
■ bistable relays maintain their switching position after the energization or
input voltage is disconnected. See > bistable relays
and the design of the magnetic circuit:■ neutral (non-polarized) relays operate independently of the polarity of
the applied voltage (coil voltage)■ polarized relays use an additional magnet within the magnetic circuitand therefore only operate with a specific polarity of energization.
■ remanent bistable relays adopt a particular switching position following
an energizing direct current in any direction and are then held in thisposition by the remanence in the magnetic circuit.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Make-before-break contacts
Contact mechanism where Form A contacts (normally open contacts) close
before Form B contacts open (normally closed contacts).

Minimum energization duration
Minimum duration the coil needs to be energized with rated DC voltage. Unless otherwise stated the proposed minimum energization duration is 100 ​ms.

Material group of insulation parts
Categorization of insulation materials according to their tracking indices,
according to IEC ​60664-1.

Max. coil temperature
As general term refers to the max. approved coil temperature, measured bychange of resistance method.
UL classifies max. coil temperatures according to UL1446; this standard refers to insulation systems and does not cover individual insulating materials:■ class B - max. 130°C■ class F - max. 155°C.

Minimum recommended contact load
The minimum contact load a relay can reliably switch/carry depends on
the relay design and used materials; there is no physical limit as for thedefinition of a minimum switching voltage or current. The indicated value isa recommendation, it is influenced by switching frequency, required contact
resistance and its stability over time and ambient conditions. Low contact
resistance is reached reliably only above a particular load, considerablyincreased contact resistance can occur with lower loads.
■ Signal relays are capable to carry and switch minimum contact loads inthe range of the thermoelectric potential which is approx. 100µV.
■ General purpose relays are designed for category CC2 loads according
IEC61810; basically these relays are designed for switching loads withthe effect of switching arcs. Specific insulation requirements however
may call for the use of general purpose relays in applications with low
signal loads or for dry switching (switching without the generation of anelectrical arc). NOTE that increased contact resistance may occur if theload conditions are not in scope of the test conditions for category CC2
according IEC61810. Also see the minimum contact loads recommended for the different contact materials.
■ Automotive relays usually are switching higher DC loads with switchingvoltages above the fritting voltage and with switching power within thecontact cleaning effect of an electrical arc.

Maximum energization duration
Maximum duration a coil may be energized with rated DC voltage; energization beyond the indicated duration will overheat the coil system and therelay.

Minimum recommended switching power
Product of switching current and switching voltage for reliable switching.
Low contact resistance is reached reliably only above a particular load,considerably higher contact resistances can occur with smaller loads.

Max. insertion force total
The force during the insertion of the relay into the socket has to be applied
in insertion direction (no tilting) and equally on all connections. The maximum applied force must not exceed the indicated max. insertion force.

Minimum set/reset duration
Minimum duration a bistable coil needs to be energized with rated DC
voltage.

Max. operate/reset duration
Maximum duration a bistable coil may be energized with rated DC voltage.

Minimum voltage (coil)For■ monostable relays see > 'Operate voltage'■ bistable relays see > 'Set voltage' and 'Reset voltage'.

Material substance specification
For material information regarding ELV, China RoHS compliance, European
RoHS compliance, Halogene and REACH refer to product specific information on TE's Website: www.te.com/customersupport/rohssupportcenter.
Max. coil power
The highest permissible input power at the reference temperature at which
the relay, with continuous energization, heats up to its max. permissible coiltemperature. Unless otherwise stated the data is indicated without contact
load.

Max. switching voltage
Maximum voltage that may occur between the switching contacts before
closing or after opening the contact. Data given for AC refer to Vrms in a midpoint earthed 3-phase supply system.
Maximum energization duration
Maximum duration a coil may be energized with rated DC voltage; energization beyond the indicated duration will overheat of the coil system and therelay.
Maximum voltage (coil), Umax
The highest permissible input voltage (coil voltage) at the reference temperature at which the relay, with continuous energization and without contactload, heats up to its max. permissible coil temperature.
Also see > 'Limiting voltage'.
MCTF - Mean cycles to failure
Expected value of the distribution of operations to failure, average numberof operations according to Weibull.
Mechanical endurance
Number of cycles without contact load during which the relay remains within
the specified characteristics.
NOTE that the failure criteria for mechanical endurance are not the same asfor electrical endurance, therefore the value for mechanical endurance has
no relation and cannot be directly compared to electrical endurance for very
low loads!
Mechanical life
See > 'Mechanical endurance'.

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Monostable, neutral relay, non-polarized relay, polarized relay
A relay is called monostable when its contacts return automatically to therest position (release state) after the coil is de-energized.
Non-polarized relays operate independently of the polarity of the applied
voltage (coil voltage) whereas polarized monostable relays only operate witha specific polarity of energization.
Mounting
Describes specific mounting options of the relay. See >■ 'Through-hole-technology (THT)'■ 'Through-hole-reflow (THR)'■ 'Surface mount technology (SMT)■ for Mounting on DIN-rail (relays and accessories) see > 'DIN-rail'.
See also > 'Mounting' in the processing section.
Mounting distanceThe distance between two adjacent relays in parallel and unidirectional mounting according to IEC ​61810-1 or distance to other electricalcomponents including the pc-board. Insulation requirements may stipulate
an increase to the minimum distance between the relays or to choose a
different placement.
If not otherwise stated the product data refers to relays in 'single mounting'.
In addition to this definition we use:
■ dense packing: relays mounted at minimum distance; this minimum
distance is defined by the requirements of the insulation coordination
at rated voltage 230 ​VAC, and/or by mechanical requirements for themounting of the relay (e.g. use of sockets)■ single packing: relays mounted at a distance without any thermal impact of adjacent relays or components.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

11Automotive, General Purpose and Signal Relays
Definitions (Continued)
Mounting position / Placement
Unless other restrictions are stated the relays can be mounted in any direction. The relay connections have to be fully contacted and with adequatecross-sections to ensure the current flow and heat dissipation.
For the arrangement of the relays the insulation requirements, heat dissipation and the magnetic interrelation have to be taken into consideration.
MTBF - Mean time between failure
Expected value of the distribution of the time between failure. For components with limiting failures due to wear (e.g. contact wear), see > 'MCTFMean cycles to failure'.

Packaging unit
Minimum delivery quantity (e.g. per carton/plastic bar) and quantity per box.
Additionally, minimum quantity requirements apply and these requirements
may differ from indicated packaging units. Please consult with your TE salesorganization or authorized distributor.
PCB
Printed circuit board.
Peak inrush current
See > 'Limiting making current'.
Pre-contact, pre-make contact
Contact with two operating contact points usually of different material, with
one contact switching prior to the other one. Pre-make contacts are usedmainly for high inrush currents.

Nominal power (coil)
See > 'Rated coil power'.
Nominal voltage (coil)
See > 'Rated coil voltage'.
Normally closed contact, NC contact
See > 'Form B contact, NC contact, normally closed contact'.
Normally open contact, NO contact
See > 'Form A contact, NO contact, normally open contact'.
Open contact circuit data
Insulation parameters of the contact circuit.
OperateProcess in which a relay shifts from the release/rest condition to the operatecondition.
Operate state, operate condition
For a monostable relay, specified condition of the relay when it is energizedby the specified energizing quantity and has responded to that energization.
For a bistable relay, it refers to the condition other than the release/reset
condition as declared by the manufacturer.

Product code
The ordering code structure does allow a large number of possible variations, but not all possible variations are defined as standard types (ordering
codes) and thus not included in the product range.
Special versions to customer specifications can be supplied. Please contact
your local sales organization.
Product date code
Printed on the product. Indicates the date of production of the product; themost common format is 'year+week', 'yymm' (e.g. 0412 indicates production in 2004 week 12); this code may be followed by additional related
information.
Product marking/specials

Operate time (DC coils)
The time interval that elapses from energizing a monostable relay in the rest
state with the rated voltage (pulse or square signal) at an ambient temperature of 23°C to the moment when the last output circuit is closed or opened(bounce time not included). The operate time varies with the applied coilvoltage and the ambient/coil temperature.
This definition refers to DC-coils only, due to the dependency of the phaseangle considerably longer operate times may occur with AC magnetic
systems.
Operate voltage
Value of coil voltage at which a monostable relay operates. For bistable
relays see > 'Set voltage'.
Operate voltage U1Value of the coil voltage at which a relay operates, having previously
been energized at the same voltage and with rated contact load (thermal equilibrium has to be achieved).
Operate voltage without preenergizing U0
Minimum permissible input voltage at which the relay operates, for a coiltemperature equal to the reference temperature (23°C coil temperature
without preenergizing).
Operation
One switching cycle including energizing and de-energizing of the relay coil.
Operative range
According to IEC ​61810-1.
Class 1: 80%..110% of the rated coil voltage (or range)
Class 2: 85%..110% of the rated coil voltage (or range)
For diagram specification see > 'Coil operative range'.

1205-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

For information on production date code see > 'Product date code'.
Protection classSee > 'Degree of protection (IEC ​60529)'.
Protection to heat and fire
Data of the flammability class according to the UL 94 (Underwriters Laboratories, Inc., USA) specification.
UL 94 flammability testing, conducted on plastic materials to measureflammability characteristics, determines the material’s tendency either toextinguish or to spread the flame once the specimen has been ignited.
According to IEC61810-1, all plastic materials have to fulfil the Glow Wire
test requirements with min. 650°C.
PTI
See > 'Tracking index'.
Push-to-test button, test tab
For manual operation of the relay. The test button is to be used for test
purposes of an equipment or installation. The push-to-test button is not de-Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
signed for standard ON/OFF operations, for continuous electrical operationin the manually set ON state, and is not to be used as a switch.
Before operating the test tab, the operator has to make sure that the load
and any other connected item will operate safely.
As safety functions of the equipment might be bypassed and reduced
insulation requirements apply, the test button is to be operated by trained
personnel only.
Quick connect terminals (spade terminals)
The connectors indicated in the datasheet may be used for the connection
to the relay. When using this connector type the given plug cycles and the
maximum permissible current have to be taken into consideration. The
connector and wire cross section have to be selected so that under thecurrent load the increase of the temperature at the connector point must
not exceed 45 ​K. For high contact currents it is recommended to solder theconnection.
Furthermore the correct insulation of the connectors/plugs have to berespected.

function diagram below shows the different cycles for the most important
relay configurations of undelayed power relays. Unless otherwise stated theindicated times are maximum values, the cycles specified apply to DC-coils
energized with rated voltage (without any components in series or parallel tothe coil) and at the reference temperature.
See■ 'Operate time'■ 'Release time', 'Reset time'■ 'Bounce time'■ 'Minimum energization duration'

Rated coil power
Product of coil current and voltage at rated coil voltage (in mW or W for DCcoils and in VA for AC-coils)
Rated coil voltage, Nominal voltage (coil)
Rated voltage at which the relay displays the operating characteristics, given
for a constant DC supply or sinusoidal AC supply. Other operating conditions (e.g. pulse control, ramp voltage, half wave rectifying, etc.) may lead tocharacteristics other than specified.
Rated current
Current a relay can switch on and off and a relay or accessory can carry under specified conditions. Unless otherwise defined the rated current covers:■ contact current, switching current■ limiting continuous current: For a relay the specified conditions aredefined under contact ratings; see > contact ratings. For accessories
the rated current is specified for a duty factor of 50% at rated frequencyof operation and at ambient temperature 23°C; the respective derating
curves should be followed.
Rated values
Standard values the relay is designed for. Values are used to classify relays.
Rated voltage (contacts)
Voltage between the switching contacts before closing or after opening of
the contact.
REACH SvHC compliance
See > 'Material substance specification' on TE's Website:
www.te.com/customersupport/rohssupportcenter.
Reference temperature
Unless otherwise indicated the reference temperature refers to an ambient
temperature of 23°C ('room temperature' ). Also see > 'Coil data'.
Reference values
Reference values for all tests according to IEC ​61810-1.
Reflection loss, Return loss
The part of a signal which is lost due to the reflection of power at a line of
discontinuity.
Reinforced insulation
A single insulation system applied to live parts which provides a degreeof protection against electric shock, comparable to a system comprising
basic insulation and supplementary insulation (refer to IEC 61810-1, Type of
insulation).
Relay cycles
Due to the self induction of the coil and the inertia of the parts to be moved, on activating a relay the operations do not take place suddenly. The

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Relay with force guided contacts
The compliance with regulations for the safety of persons and material isimperative in our technical world. National and international regulations takevarious risks into account. These safety standards also make demands oncomponents which share with their function the safety level of a plant, machine or the equipment. For relays being used for safe contact monitoring
purposes the contacts have to be linked mechanically in a way, that NO andNC contacts must not be closed at the same time. It has to be ensured,that over the entire life and even in case of malfunction (e.g. contact welding) the open contact gap will be at least 0.5 mm. Relays with force guided
contacts comply with the requirements of EN61810-3 (formerly EN50205).
ReleaseProcess in which a monostable relay shifts from the operate state back to
the rest state.
Release state (normal position)
Switch position of a non-energized monostable relay.
Release time
The time interval that elapses from the point of time at which a monostable
relay in the operating state has the rated voltage disconnected to the pointof time at which the last output circuit has closed or opened (not including
the bounce time). Unless otherwise stated the indicated times are maximum
values and are valid for energization with rated voltage, without any components in series or parallel to the coil, and at reference temperature.
Release voltage
The input voltage at or below which a monostable relay releases to the rest
state at the reference temperature.
Reliabilty
Electromechanical components as relays, are subject to wear (mechanicaland electrical). For the reliability the typical bath-tub curve applies, hence
singular statistical failure events below typical reliability values may occur.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

13

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Reset
Process in which a bistable relay returns from the operate state back to therest state.
Reset state
Switch position of a bistable relay as specified by the manufacturer. Unlessotherwise stated the reset state is the contact position where the normallyopen contacts (form A, NO contact) are open and the normally closed contacts (form B, NC contact) are closed. Please note that the contact position
for bistable relays is not defined at delivery.
Reset time
The time interval that elapses from the point of time at which a bistable relay
in the operating state has the rated voltage (applied in the opposite direction
for 1-coil systems and to the reset coil for 2-coil systems) to the point oftime at which the last output circuit has closed or opened (not including thebounce time).
Reset voltage
The input voltage to a bistable coil for reset to the rest state at the reference
temperature. Please note the wiring diagram and the polarity (see > 'Bistable relay').
■ Reset voltage max.
The input voltage that must not be exceeded to a bistable coil for reset to
the rest state at the reference temperature.
■ Reset voltage min.
The input voltage that has to be applied to a bistable coil for reset to therest state at the reference temperature.
Resistance to soldering heat
According to IEC ​60068-2-20, method 1A.
Rest state
Switch position of a monostable relay in the unenergized state.
For bistable relays see> 'Reset state'.
RoHS - Directive 2002/95/EC, EU RoHS complianceDirective on the Restriction of Hazardous Substances (Directive 2002/95/
EU, RoHS directive) restricting the use of certain materials as Lead (Pb),
Cadmium (Cd), Mercury (Hg), hexavalent Chromium (Cr6), polybrominatedBiphenyls (PBB) and polybrominated Diphenylethers (PBDE).
'Compliant'indicates that the entire product group is compliant with the RoHS
directive and none of the above materials is intentionally added and/or
below the limits set forth in the directive.
'Compliant versions'indicates that certain products within the respective product group arecompliant with the RoHS directive. The RoHS compliant selection isindicated together with the information on the RoHS compliance. Some
products of that product group however do contain materials (e.g. Cd)
listed above and thus are not compliant with the RoHS directive.
Safety relay
See > 'Relay with force guided contacts'.
Sealed relay
See > 'Category of protection (IEC ​61810)' - RT IV and RT V.
Set time
The time interval that elapses from operating a bistable relay with the rated
voltage (pulse or square signal) at an ambient temperature of 23°C to themoment when the last output circuit is closed or opened (bounce time notincluded). The operate time varies with the applied coil voltage and theambient/coil temperature.
Set voltage
Value of coil voltage at which a bistable relay operates. For monostable
relays see > 'Operate voltage'.

14

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Shock resistance (destruction)
This test is used to evaluate the resistance of the relay to heavy mechanicalshocks leading to a permanent damage to the relay. This test is performed
according to the IEC ​60068-2-27, Ea test.
Shock resistance (function)
This test is used to evaluate the resistance of the relay to mechanicalshocks such as those that could occur in transport or during operation (noopening of closed relay contacts with a duration >10 ​µs). This test is performed according to the IEC ​60068-2-27, Ea test.
Data valid for all relay axes unless otherwise stated. Nevertheless it isrecommended to avoid shock especially in armature and contact movement
direction.
Single contact
Contact system with one contact point per contact member (contact blade).
Single/double throw contact
A single throw contact connects one common line (movable contact) to one
load line (stationary contact). See > 'Form A contact' and 'Form B contact'.
A double throw contact switches one common line between two stationary
contacts, for example between a NO contact and a NC contact. See >'Form C contact, CO contact, changeover contact'.
Single/double/multi pole
A single pole relay connects one common line (movable contact) to one
load line (stationary contact).
A double pole relay switches two, electrically disconnected common lines
with two electrically independent load lines (like two separate make relays);the same stands for multi-pole relays, the number of poles indicate thenumber of independently switches load lines.
Switching of different potentials on adjacent contact circuits of a multi-pole
relay is permitted as long as the sum of applied voltages does not exceed
the rated insulation voltage.
The switching of different voltages with the generation of an electrical arc
and the switching of reverse polarity on adjacent contact circuits of a multipole relay without contact separated chambers however is not permitted.
The contact load has to be connected to the same contact side.
Sockets and accessories
All listed sockets and accessories have been tested and approved only with
the indicated relays from the TE product range.
For combinations of sockets with other relays with similar design and pinning TE cannot take responsibility for any malfunction.
Also see > 'Combination of relay and socket'.
Soldering temperature/time, IEC ​60068-2-20
See > 'Resistance to soldering heat'.
Solid insulation
Solid insulating material between two conductive parts.
Steady state current limit
See > 'Limiting continuous current'.
Stripline
A type of transmission line configuration which consists of a single narrowconductor parallel and equidistant to two parallel ground planes.
Switching capacity
See > 'Switching power'.
Switching current
See >■ 'Rated current'■ 'Limiting making current'■ 'Limiting breaking current'.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Definitions (Continued)
Switching power
Product of the switching current and switching voltage (in W for direct current, in VA for alternating current).
Switching rate
See > 'Frequency of operation'.

Through-hole technology (THT)An assembly process for mounting components where terminals are passed
through supported (plated through) or unsupported (bare) holes in an interconnection substrate. Normally, traditional wave soldering is used with THT
components.
Tracking
Progressive degradation of a solid insulating material by local discharges toform conducting or partially conducting paths.

Switching voltage
See > 'Rated voltage (contacts)'.
Switching voltage max.
See > 'Max. switching voltage'.
Terminal assignment
For historical reasons and due to typical application nomenclature (e.g. relays
in automotive applications) different terminal assignment schemes are used:
Terminal assignment to IEC ​67
The terminals are identified by consecutive numbers. Please note thattwo digit identifiers exist in both the IEC ​67 and the EN 50005 identification systems and may have different meaning.
Terminal assignment to EN 50005: the terminals are defined by a two digit
code:
for the coil terminals 'A1', 'A2' are used
for contacts the first number indicates the pole, the second number
indicates the function
1 for the movable form C, CO contact,
2 for the form B, NC contact,
4 for the form A, NO contact
e.g. a terminal '24' indicates the form A, NO contact of the second poleof a relay.
Automotive relays
Quick connect style coil and load terminals ISO relays may be numbered according to two different standards, the terminals have the same
location and function. The respective numbers are:1 or 86 for the first coil pin;
2 or 85 for the second coil pin;
3 or 30 for the common load pin;
4 or 87a for the form B, NC load pin;
5 or 87 for the form A, NO load pin.
NOTE that the terminal assignment graphs are indicated either 'bottom
view' (as seen from the solder wave side of pcb's, pin side of the relays) or'top view' (as seen from the component side of single sided pcb's or thecover side of a relay).
Terminal torque, screw type terminals
For screw type terminals the maximum indicated screw torque must not be
exceeded.
No torque must be applied to any other terminal types of relays or accessories.
Test voltage/dielectric test voltage/dielectric strength
Voltage applied during dielectric (high voltage) tests between intentionallynot electrically connected parts of the relay.
Thermal resistance
Relay parameter measured in Kelvin per Watt, which relates the consumed
power with the respective temperature increase in the state of thermal equilibrium measured without load and without components in parallel or in line
to the coil. Multiplied with its power consumption (at the actual coil temperature) it indicates the temperature rise of the coil above ambient temperature.
Thermoelectric potential
Voltage at the relay terminals of a closed contact resulting from a temperature difference of the different metal junctions (terminal, spring, contacts,...)
inside the relay.

Tracking index■ PTI - Proof tracking index - numerical value of the proof voltage expressed in volts which a material in test can withstand without tracking
under specified conditions (according IEV ​212-01-45).
■ CTI - Comparative tracking index - numerical value of the maximum voltage expressed in volts which a material in test can withstand without
tracking under specified conditions (according IEV ​212-01-45).
Transit time
The movement time of the armature after opening of one contact set (e.g.
NC) before closing of the other (e.g. NO) of a changeover relay. See >'Relay cycles'.
Twin contact, bifurcated contact
Contact with two simultaneously operating contact points. Twin contacts
increase the contact reliability considerably, especially when switching low
currents and voltages (dry circuits) and/or are used for reduction of contact
resistance. Bifurcated contacts are twin contacts with the two contact
points on one contact member (contact blade).
Urtd
See > 'Rated voltage'.
Vibration resistance (destructive)
This test is used to evaluate the resistance of the relay to heavy mechanicalvibration leading to a permanent damage to the relay. This test is performed
according to the IEC ​60068-2-27, Ea test.
Vibration resistance (functional)
This test is used to evaluate the resistance of the relay to harmonic mechanical oscillations such as those that could occur in transport or during
operation. No opening of closed relay contacts or closing of open relay
contacts with a duration >10 µs is allowed to occur during the test. This
test is performed according to the IEC ​60068-2-6, Fc test. Unless otherwise
stated the values refer to a frequency range 30...150 ​Hz.
Voltage drop
Effect of contact resistance, measured as voltage drop across closed contacts. See > 'Contact resistance'.
VSWR
Abbreviation for 'Voltage Standing Wave Ratio'. The ratio of the maximum tothe minimum voltage set up along a transmission by reflections.
Wash tight/immersion cleanable
See 'Category of protection (IEC ​61810)' - RT III.
Relays that can be cleaned together with the printed circuit board after
soldering. The washing requires a suitable solvent. The term „immersion
cleanable/wash tight“ is not identical with „hermetically sealed“!
Unless otherwise stated the relays are wash tight according to Qc2 IEC ​60068-2-17, tested with a water immersion test at max. ambient temperature for 1 minute.
Contact our technical support for suitable solvents and washing parameters. The user needs to verify the compatability of lacquer, solvants anddrying process.

Through-hole reflow (THR)
An assembly process, where THT components are soldered in a reflow process instead of traditional wave soldering (also referred to as pin-in-paste).
For details see chapter Processing Information.

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

15

Automotive, General Purpose and Signal Relays
Handling, Processing, Testing and Use
Electromechanical relays are one of the most robust and reliable components. To achieve the specified performance some precautions must be
taken during transportation, storage, handling, processing and testing.
CAUTION: ANY TRANSPORT, PACKAGING, HANDLING OR USE DIFFERENTLY THAN HEREIN RECOMMENDED BY TE MAY CAUSE RISKSAND IN THIS SITUATION SHALL BE ENTIRELY BORNE BY USER.

Handling / Logistics
Transport
During transport, care has to be taken to avoid excessive shock and vibration. Mechanical stress can lead to changes in operating characteristics
or to internal damage of the relay (see > 'Vibration and shock resistance').
When a potential excess of mechanical stress is suspected (e.g. damaged
packaging, dropped packages or relays, etc.), the relays should be checked
and tested before use.
Packaging
Depending on the relay type and design and with regard to specific requirements various packaging types and technolgies are used for shipment ofour products.
■ THT and THR relays
are packed in trays, cardboard or plastic tubes with stoppers on bothsides of the tubes. For unpacking from plastic tubes the plugs on bothsides shall be removed to prevent any relays sticking to the plugs andpossible falling down onto the pick place.
■ SMT relays
the standard packing are blisters tapes wound on a reel (tape & reel)and dry packed in order to prevent the relays from humidity. The SMT
relays should be kept in these containers for storage and should be
removed from the box just only before the assembly process preferrably
at the SMT assembly line. The boxes are equipped with shock absorbers, which protect the relays from mechanical impacts.
■ Industrial relays are packed in trays or in tubes.
Handling
Modern relays are high precision components, sensitive to mechanicalstress and abusive handling. Care must be taken when handling the relay
during all stages of production.
■ special attention must be paid, not to apply mechanical shock, e.g. by
dropping relays onto the floor or other hard surfaces (e.g. assembly
tables). Once dropped, relays should not be used anymore and shall bescrapped. In case of relays assembled to long wires or harnesses any
mechanical shock due to whiplash effect has to be avoided.
■ care has to be taken when opening tubes to prevent relays from fallingout or during splicing of reels, where the loose end of the tape should
not drop to the floor.
■ special care must be taken, that the terminals of the relays are not bent.
Straightening of bent terminals and pins is not allowed.
■ handling or processing of relays in bulk is not permitted.
Storage
Generally TE's products should not be exposed to extreme high temperatures, high humidity or damaging media such as sulphurous, acid orbasic atmospheres. Unless other specific requirements are documented,
TE recommends in accordance with IEC 60068-1 a standard atmosphericconditions a storage temperature between 15 and 35°C (59 to 95°F) and a
relative humidity between 25 and 75 %.
Dry packed SMT relays: when the packing is opened, the relays must be
soldered within a defined time frame, indicated by the moisture sensitive
level MSL (max time from opening the bag to soldering). When the open
time is exceeded, remaining relays shall be dry repacked, or the relays must
be dried before soldering.

Processing
Testing
For electrical incoming inspection tests refer to sections > 'Contact resistance', 'Diagnostics of relays' and 'Storage'.
During incoming inspection and respective handling, special care has to betaken not to bend the relay terminals. The degradation of sealing properties
up to internal failures (e.g. breaking of coil wires) could be the consequence.
Handling during processing
Relays are high precision components, sensitive to mechanical stress andabusive handling. Care must be taken when handling the relay during all stages of production. Do not exert any pressure on the pins.
Manual handling■ the relays have to be removed from the packaging in on orderly way■ processing of relays in bulk is not permitted■ when relays are manually handled and placed on PCB’s, special
attention must be paid, not to drop relays onto the floor or other hardsurfaces (e.g. assembly tables). Once dropped, there is a risk of highmechanical shock and potential damage of the relay; these relays
should not be used anymore. In case of relays assembled to long wires
or harnesses any mechanical shock due to whiplash effect has to be
avoided.
■ open packages, tubes or splice reels with care: after prolonged storageat higher temperature there is a risk of relays sticking to the stopper
plugs of tubes and for reels the loose end of the tape shall not drop to
the floor.
■ special care must be taken, that the terminals of the relays are not bent.
Straightening of bent terminals and pins is not allowed.
■ do not exert undue force (e.g. by hand tools) when inserting the relays
onto a pcb or into a socket.
Automatic handling■ the mechanical stress caused by handling and/or force of automatic
feeders or robots has to be adjusted to avoid mechanical damage (e.g.
cracking of the relay case, detaching cap from relay base).
■ the clamping force shall not exceed the values given for x, y, z direction,in order to provide for the proper internal function of the relay. The force
shall be applied in the largest possible area. Picking in the dashed area
would be preferred. Unless otherwise stated the clamping force should
not exceed 5 N in any of x/y/z direction.
■ do not excert undue force when inserting the relays onto a pcb or into asocket.
Mounting on PCB's■ the relays have to be removed from the packaging in an orderly way,processing of relays in bulk is not permitted. Dimensions and pcb
layout indicated in the datasheet are indicated for the manual placement on the pcb's. For automated pick-and-place we refer to detailled
component drawings.
■ unless otherwise stated the relay can be mounted in any position. The
relays can be further processed in the industry standard commercial
soldering and cleaning (for suitable products) plants.
■ when inserting the relay into the PCB, do not exert any pressure or use
undue force or torque on the pins as this may compromise the pin seal
or affect the integrity of the coil connections.
■ no pressure should be exerted on the relay cover and terminal pins after
the relay has been inserted in the printed circuit board.
■ after insertion in the printed circuit board, the terminal pins must not bebent or twisted for fixation or attachment. Bending or applying mechanical stress to the pins may affect the relay parameters. Bending theterminal pins of sealed relays (wash-tight, immersion proof, sealed) may
damage the sealing. However, if fixing must be carried out before soldering, please contact our application support. Also see > 'Clinching'.

For more information, refer to our application notes in the internet.

16

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Handling, Processing, Testing and Use (Continued)
Mounting of relays and accessories on sockets and DIN-rails
When inserting the relay onto sockets, do not exert undue force on the relay
and/or pins (e.g. indicated max. insertion force).
Reduced ambient temperature ranges may apply for mounting and handlingof sockets and accessories (mounting on DIN-rail, assembly of retaining
clips, mounting/dismounting of relays etc.); unless otherwise stated provide
a temperature of -10°C to +40°C for ambient and parts for such mounting
processes.
Clinching
Terminals should not be bent to hold the relay in place on the PCB to aid
flow soldering. Bending or cutting the pins after insertion generates extreme
mechanical stress, especially in the case of rectangular PCB terminals.
Neither the relay performance nor sealing of flux resistant and plastic or hermetically sealed relays can be guaranteed if the terminals have been bent.
Also see > 'Mounting on PCB's'
Fluxing
Fluxing has to be carefully considered depending on the type of relay.
■ Sealed relays, wash-tight relays:these relays may be processed on all standard commercial fluxing,
solder and cleaning equipment for this type of electrical and electromechanical components.
■ Unsealed relays, open relays, dust-proof relays:
should be hand soldered to avoid flux contamination of the relay.
Flux should be used sparingly and evenly and joints examined after
soldering. If flow soldering is used however, the flux level has to be set
so that it merely touches the bottom of the PCB and only wets theunderside of the printed circuit board. It must not flood onto the uppersurface of the PCB. This is particularly critical if multilayer PCB are used
and there are unused holes under the body of the unsealed relay, theflux should only be visible as foam flux through any open perforations in
the printed circuit board. If the printed circuit board is flooded by flux,
bursting flux bubbles can lead to contamination in open relays and,
consequently, to failures. To protect against corrosion, no acidiferous
flux should be used.The recommended flux types are 1.1.3, 1.2.3 or
2.2.3 according to DIN EN ​29454 T.1 or type F-SW 32 to 34 to EN
29454-1 (ISO 9454-1).
If there is any doubt about the fluxing process, sealed relays (washtight, plastic or hermetically sealed) should be used.
Acidic fluxes are not suitable for open relays due to the risk of corrosion, especially inside the coil.
Preheating
During preheating for common wave soldering processes, the temperatureof the upper surface of the printed circuit board should not exceed 130°C(EN61760-1). Excessive exposure to high temperatures may affect the relay
characteristics. NOTE that any not completely dried flux might evaporate inan explosive reaction and sputter; ensure that no flux penetrates the insides
of open relays.
Soldering
The soldering process has to be controlled carefully in order not to impair
the performance of the relays. No external force to be applied on the pins
during the soldering process.
Our relays can be processed in commercial soldering and washing installations (if classified as washable). They cover the following regulations:
Flux tight type relays; open relays without cover:■ Solderability according to IEC ​60068-2-20, Test Ta, method 1, aging 3:
4 hours at 155°C, dewetting■ Resistance to soldering heat according to IEC ​60068-2-20, test Tb, test
method 1A
Sealed type open vent hole relays:■ Solderability according to IEC ​60068-2-58; dewetting■ Resistance to soldering heat according to IEC ​60068-2-58

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Sealed type washable relays:■ Such relays are capable of being automatically soldered and subsequently undergoing a washing process to remove flux residues without
allowing the ingress of flux or washing solvents■ Sealing complies to IEC ​60068-2-17; Test Qc: method 2, the relay willwithstand a bubble test at 70°C for 1 min■ See also > 'Chemical Cleaning'■ Avoid designs with considerable thermal mass below the relay (e.g. highnumber of solder filled interlayer connections).
Soldering, wave soldering
The automated soldering process has to be controlled carefully in order not
to impair the performance of the relays. Flux resistant and sealed relays canbe used with most dip or wave soldering processes. The solder level has
to be adjusted so that it does not flood the printed circuit board surface.
The pre-soldered pins are suited for standard soldering processes with Pbsolder as well as for Pb-free solder processes.
Leadfree processing:■ for processing of relays under leadfree conditions refer to the indicated'resistance to soldering heat', exceeding the limit may have negative
impact on relay parameters. We recommend that leadfree processes
should be carried out using SnAgCu-solder. The solder bath temperature for i.e. double wave soldering should be in the range of 250 to
260°C.
■ the solder bath temperature should not exceed- 270°C for 10 ​s for flux-proof relay versions (RT II)- 260°C for 5 ​s for wash-tight and sealed relays (RT III and higher).
■ for other bath temperatures and solder time (e.g. higher solder bathtemperature with reduced dipping time) contact our technical support.
SnPb processing■ for this process refer to maximum permissible temperatures at theterminals according to CECC 00802. For SnPb Eutectic Process werecommend a maximum peak temperature Tp < 225°C. For Pb-freeprocessing we recommend a maximum temperature Tp < 245°C.
These soldering temperature profiles indicate the Pad/Pin temperature.
Soldering, reflow soldering
Unless otherwise stated the soldering should be carried out according to
the recommendation of IEC ​60068-2-58 and according to the recommendations of CECC ​00802.
Please note that in some cases the ambient temperature may be considerably higher on top area of the relay component. In this case the component
temperature should not exceed 260°C. Check for specific mounting conditions. In addition the time, parameter tL (time span for temperature above
preheating temperature) should be below 150 ​s.
In general, electromechanical relays should be soldered at the lower process limits of a soldering process.
Soldering, manual soldering
The relay programme offers products with various terminal styles. Some
products with solder lugs are specifically designed for manual soldering
whereas some products (e.g. with quick connect terminals) are not intended
to be soldered. Most PCB mount relays are designed for processing in awave soldering process. For manual soldering and repair the soldering timeshould be kept to a minimum and no mechanical force or torque must be
applied to the relay terminals.
Unless otherwise stated we recommend for manual soldering a soldering
temperature of 300 to 350°C for a maximum soldering time of 3 ​s.
Cooling
After wave or reflow soldering, the assemblies should be cooled in orderto reduce thermal stress and to minimize the pressure difference between
inside of the relay and ambient. Do not change the temperature suddenly,
especially avoid thermal shock for the hot relay. Do not cool down by using
cold liquids or aerosols. In case of thermal shock, the relay sealing could
break and through micro-cracks cleaning fluid with dissolved flux might besucked inside the relay; such ingress of liquids into the relay can lead to
failures in operation.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

17Automotive, General Purpose and Signal Relays
Handling, Processing, Testing and Use (Continued)
Cleaning, chemical
Preferrably a non clean flux process should be used; in this case there is noneed to wash the PCB and we recommend avoiding washing processes inorder to protect the environment. If cleaning is necessary, certain precautions have to be taken:
Flux tight type relays and sealed relays with open vent hole:■ immersion cleaning is not possible with these types of relays. Only thesoldered side of the PCB (THT) should be cleaned and care has to betaken not to allow washing solution to flood the PCB surface to prevent
penetration of solvent and dissolved flux into the relay. Any othercleaning method involving potential contamination of unsealed relays
must be avoided.
Sealed relays (wash-tight, sealed and hermetically sealed), closed vent-hole:■ do not stress the terminals mechanically before or during the mounting,soldering or cleaning process■ the PCB should be allowed to cool prior to the washing process to avoid thermal shock and potential damage to the seal as well as a pressure
difference (see > 'Cooling')■ the printed circuit must be washed in a timely manner after the soldering process■ do not lower the temperature while the relay is in contact with any
liquid, e.g. some residue of cleaning medium can be between relay and
PCB■ modern cleaning equipment uses water or alkaline solutions, if othercleaning solvents are used, ensure that the chemicals are suitable
for the relay. The use of unsuitable solvents can cause cracking or
discoloring of the plastic parts. Suitable solvents include isopropyl
alcohol (alcohol-based solvents), water with wetting agents. Unsuitable
solvents are, e.g., acetone, ethyl acetate, aqueous alkalines, phenolic
combinations, thinner-based solvents, chlorosenebased solvents,
trichlene-based solvents and chlorine.
■ when using high pressure cleaning processes, special care has to betaken to avoid any ingress into the relay as liquids under high pressure
can damage the seal of the relay. Do not use jet pressure higher than
1,5 ​bar or ultrasonic pressure higher than 0,5 ​bar.
■ avoid and do not use any ultrasonic pressure for relays with gold plated
contacts. See > 'Cleaning, ultrasonic'■ special care must be taken on the temperature of the cleaning andrinsing liquid; their temperature shall be similar and not deviate by morethan 10°C.
■ the individual wash stations must be separate from one another toprevent cross-contamination!
■ after the final washing process, the printed circuit boards must be cleaned again using a clean washing medium!
Cleaning, ultrasonicUltrasonic cleaning is generally not recommended as this can cause friction
welding of the contacts and in addition it may cause coil wire breaks. If
ultrasonic cleaning cannot be avoided, it is on user’s own responsibility andmust be completed as quickly as possible.
For gold plated contacts ultrasonic cleaning is NOT recommended at all as
this might result in cold welding of the gold contacts.
Protective coating
Relays with a category of protection II and below are not suited for coatingprocesses. Relays with category of protection III and higher are suitable forwashing processes but not all relays are necessarily suited for coating processes. In this case, please contact our application support for recommended relay versions and processes.
In case relays with insufficient protection are coated, there is a high risk that
resin will enter the relay and destroy the relay. Sealed relays with an opened
vent hole can only be partly coated.

18

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

■ for the protective lacquering and varnishing of the mounted printed circuit boards, we recommend single-component lacquer (epoxy-based).
Suitable are Epoxy, Urethane and Fluorine coatings. Silicon containing
laquer or potting compound must not be used!
■ we recommend a coating technology that avoids uncured varnish in thesurrounding of the relay.
■ the maximum drying temperature should be 70°C.
■ the user has to conduct thorough testing with their processes, usedlacquers, coatings or casting compound. Solvants may damage thecomponent case or compromise their sealing properties.
■ do not allow de-varnishing of PCB for repair, if unavoidable the relay has
to be replaced.
NOTE:■ Lacquer or potting compound containing silicon MUST NOT be used!
■ Coatings, especially potting compounds may impact the heat dissipation of the relay. Therefore it is necessary to conduct thermal tests ofrelays in potted assemblies.
Vent hole, nip-off pin, opening
Most PCB relays, reflow solderable relays as well as THR and SMD relays,
are provided with a closed vent hole on top of the cover (removable sealing
pin on relay cover).
Inside a sealed relay certain load conditions (e.g. heavy loads with generation of pronounced arcing) and/or extreme ambient conditions can generate
aggressive atmosphere (diffusion, arc ionization), corrosive condensate or
overpressure. To avoid such conditions and a possible reduction of electricalendurance a gas exchange with the atmosphere is advised. To allow thegas exchange, break off the vent hole or nip-off pin.
Silicone
Materials containing silicone or its derivatives must not be used in any formin or near to processing and packaging of subcomponents and the final
relay assembly. Silicone and its derivatives are not allowed in the material of
any component in the vicinity of the relays.
Silicone atmosphere can diffuse through the relay housing and cause contact failures, siliceous compound deposits can create an insulating abrasive
layer on the contact surface.
Contamination can occur with all silicone-based materials before and after
cure (contain silicone volatiles), silicone aerosols, silicone fluids, grease andhand cream, etc..
Some types of signal relays are suited for application in Silicone environment, however the suitability MUST be verified; please contact our application support.

Testing
Testing
During incoming inspection, special care has to be taken not put mechanical stress on the relays and terminals and not to bend the relay terminals;
internal failure or long term effects as a result of a degradation of sealing
properties could be the consequence.
Bistable relay, incoming and in-process testing
In a bistable or latching relay the contacts maintain the last switching position when the coil input voltage is disconnected.
NOTE that even though the bistable relays are leaving production preferrably in reset contact position, the position of the contact (set position/
reset position) is not defined at delivery or after transport. Thus, at the timeof incoming and in-line testing, the customer needs to check the contact
position and to set/reset the relay to the required position.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

Automotive, General Purpose and Signal Relays
Handling, Processing, Testing and Use (Continued)
Testing conditions, automated testing/diagnoseWith higher integration and use of highly complex electronic circuits andresulting quality and safety requirements (e.g. cars), relays undergo stringent
incoming tests and in-circuit testing during and at the end of the assembly
process (end-of-line tests).
Special considerations have to be given for the selection of testing parameters, the respective test limits and development of embedded diagnostic
routines:■ testing of contact resistance■ testing of magnetic system■ testing of dynamic characteristics.
The most common contact materials contain silver alloys and thus are affected by sulfidation and oxidation. Layers of oxides, sulfides and other compounds will form on the surface of metal contacts within a very short time byabsorption from the ambient atmosphere. These layers increase the contact
resistance, depending on the thickness of the layer, the effective contact
area and the specific resistance of the used contact material and layer. To
establish a reliable electric contact these layers have to be destroyed. Thiscan be done by mechanical, electrical or thermal destruction:■ mechanical destruction: high contact pressure and mechanical switching
impact■ electrical destruction: requires a specific breakdown voltage and current.
This destruction process is called A-fritting. The breakdown voltage
depends on the thickness and specific resistance of the layer. For
practical testing refer to the values according IEC 61810-7 as indicatedabove; e.g. for automotive relays the breakdown voltage can be up to
3 ​V to start the A-fritting.
■ thermal destruction: a thermal destruction requires high temperatures,
usually generated by
1) after the electrical breakdown (A-fritting) a small current is forced
through very thin channels in the layer. The resulting local high current
density heats the conducting channels up quickly, destroying the layers, until finally (within a few ms) a metal to metal bridge is established.
This process is called B-fritting. The B-fritting voltage depends on thecontact material. For practical testing refer to the values according IEC
61810-7 as indicated above.
2) generated by high contact currents and/or electric arcs (e.g. disconnecting inductive loads, switching on capacitive loads).
Icing
Under very special environmental conditions (below 0°C) and operational,
temporary relay switching failures can occur. Moisture condenses on thesurface of the cold contact and forms a thin layer of ice, causing a temporary interruption of the electrical contact.
Magnetic system, coil resistanceFor testing the inductivity of relay coils may need consideration (e.g. theinductivity for coils in automotive relays can exceed 1 ​H in the unsaturated
range). This results in a time constants between 1 to 50 ​ms for the exponential inductive current increase (pulse response). In case the ohmic coil resistance is measured with a 4-pole measurement, the resistance value may be
wrong, if measured during the inductive current rise after energization.
Dynamic characteristics
The switching times (e.g. operate time and release time) for DC-coils areusually in the low millisecond-range:■ the operate time depends on the applied coil voltage and coil temperature. Voltages higher than the rated coil voltage generally leading to
reduced operate times whereas higher coil temperature and the resulting higher coil resistance leading to increased operate times. A fast
dynamic response (e.g short operate and release time) also impacts
the bounce time and can increase the bounce time considerably.
■ the release time depends mainly on whether a coil suppresion circuit
is used and on the type of the used circuit. A low ohmic device (e.g.
a diode) in parallel to the relay coil can increase the release time by aconsiderable factor compared to the typical values shown in thedatasheets.

05-2018, Rev. 0518
www.te.com© 2018 TE Connectivity.

Datasheets and product specificationaccording to IEC 61810-1 and to be used
only together with the ‘Definitions’ section.

Diagnostics of relays, recommendations
For the development of diagnostic routines these effects need to beconsidered:■ the contact resistance may be higher than indicated in the datasheet
and due to the fritting phenomena (see above > 'testing'), also may
show a non-linear characteristic. This implies, that the contact resistance, measured at too low voltage and current levels (e.g. standard
tester and multimeter) can be significantly higher than the contact
resistance under real application conditions (e.g. supplying a 100 Wload). We recommend to perform the diagnostic routine with the actual
application load and voltage (e.g. mains or board net voltage) connectedto the contacts. If the diagnostic routine cannot be performed with actual
application load and voltage, the measurement voltage level must secure
an electrical breakdown of possible layers. We recommend a voltage
level according to IEC 61810-7.
■ the voltage drop can be up to 300 mV. The B-fritting is a physicalphenomenon, which can occur on all metal and silver based contacts.
For low level and signal applications, special signal and general purpose
relays are available. For automotive applications it is recommended to
set the diagnostic threshold voltage to min. 500 mV per relay contact(important for H-bridges or serial contact arrangements).
■ effects like icing (see > 'Icing').
■ consider the maximum possible switching times (due to, e.g., operate
voltages other than the rated coil voltage, bounce time effects, ambient
temperature and coil suppression circuits). If the status of the contact
has to be changed for the diagnostic routine (energize or de-energize
relay), the routine must wait until the intended contact status is established. Depending on electrical and ambient conditions (temperature,
voltage levels, coil circuits) the times can be significantly longer than theindicated times in the datasheet. We recommend a delay time of min.
10 times of the typical switching times.
■ a coil diagnostic routine must secure that the status of the contact does
not change during the diagnostic cycle. If the coil driver is monitored
by a watchdog routine, the energizing/de-energizing time of the coilmust not result in an unintended closing or opening of the contacts. We
recommend times of max. 0.5 ​ms.

Use
Operational humidity / Condensation
Standard conditions:
Annual mean relative air humidity ≤ ​75% at ambient temperature 23°C,
on 30 complete days distributed naturally over the year 95% at ambient
temperature ≤ ​25°C, on the remaining days occasionally 85% at 23°C. No
condensing or freezing allowed (storage and/or use).
For use and storage at other conditions, condensation or freezing due totemperature changes has to be avoided. Use and storage within the limits
as stated in the datasheet and as indicated in the graph.

NOTE: For use conditions the temperature limits as indicated in thedatasheets apply.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe ‘Definitions’ section, available at
http://relays.te.com/definitions

Datasheets, product data, ‘Definitions’ section, application notes and all specifications
are subject to change.

19