MINIATURE RELAY
1 POLE – 1 to 2A (For Signal Switching)

SY Series
 FEATURES Very small size and light weight UL, CSA recognized Conforms to FCC rules and regulations part 68
Dielectric strength 1000 VAC between coil and contacts
Surge strength 1500 V
 High sensitivity
 Wide ambient temperature range (-30˚C to +90˚C)
 Wide operating range
 DIL pitch terminals
 Plastic sealed type
 RoHS compliant

 PARTNUMBER INFORMATION[Example]

SY - 12

W - 0H - K - UL

(a)

(c)

(b)

(d)

(e)

(f)(a)

Relay type

SY: SY Series(b)

Coil rated voltage012: 5.....24VDC
See coil rating table(c)

Contact style

NilW: Single type
: Bifurcated type(d)Options

Nil0H
HW: Standard: Gold overlay on movable and stationary contact: Marking on top of relay(e)Enclosure

K: Plastic sealed type(f)

Approvals

NilUL: No UL/CSA marking on relay: UL/CSA marking on relay

Note: For movable and stationary contact with gold overlay type, add suffix “–0H” (zeroH)1

SY Series SPECIFICATIONS
ItemContactdata

SY-( )-K
Single typeSY-( )W-K
Bifurcated type

Remarks /Conditions

Configuration

1 form C (SPDT)

Construction

Single (cross bar)

Material

Gold overlay silver palladium

ResistanceMax. 100mOhm at 1A, 6VDC

InitialContact rating

0.5A, 120VAC or 1A, 24VDC

Resistive

Max. carrying current

2A

Max. switching current

1A

Max. switching voltage

120VAC / 60VDC

Max. switching power

60AV / 24W

Min. switching load *1mA, 1VDC

Capacitance (at 10 MHz)Approx. 1.4 pF (between open contacts)
Approx. 5.0 pF (between coil and contacts)Rated power (at 20℃)

150 to 175 mW

Operate power (at 20℃)

75 to 86 mW

Operating temperature range-30ºC ~ +90ºC(18V coil: +85ºC, 24V coil: +80ºC)

No frost

TimingdataOperate

Max. 5ms (without bounce)

At rated voltage

ReleaseMax. 2ms (without bounce)

At rated voltage

LifeMechanicalMin. 5 x 10⁶ operations

Electrical

Min. 100 x 10³ ops.

Insulation resistanceMin. 1000MΩ at 500VDC

Min. 1000MΩ at 250VDC

Dielectricstrength

Open contacts

400VAC, 1 minute

300VAC, 1 minute

Coil to contact

1000VAC, 1 minuteSurge
strength

Coil to contact1,500V / 10 x 160μs standard wave

Vibration
resistance

Misoperation ≧1μs 10 to 55Hz to 10hz, Single amplitude 0.75mm,3 axis, 6cycles

Coildata

Insulation

OthersShockresistance

Bifurcated (cross bar)

0.1mA, 100mVDC

At contact rating

Endurance

10 to 55Hz to 10hz, Single amplitude 0.75mm, 3 axis, 6hours

Misoperation≧1μsMin. 300m/s² (11 ± 1ms)

Endurance

Min. 1,000m/s² (6 ± 1ms)

Dimensions / weight

Initial

7.4 x 12.5 x 9.5 mm / approx. 1.7g

* : Minimum switching loads mentioned above are reference values. Please perform the confirmation test with actual load before
production since reference values may vary according to switching frequencies, environmental conditions.

2SY Series COIL RATING
Coil Code

Rated Coil
Voltage(VDC)

Coil Resistance±10%(Ω）

Must Operate
Voltage *(VDC)

Must Release
Voltage *(VDC)

1.5

1.5

15

1.05

0.08

3360

2.1

0.15

4.5

4.5

135

3.2

0.23

55

167

3.5

0.25

66240

4.2

0.3

99540

6.3

0.45

1212960

8.4

0.6

1818

1,940

12.60.9170

2424

3,290

16.8

1.2

175

Rated Power(mW)

150

Note: All values in the tables are valid for 20℃ and zero contact current.
* Specified operate values are valid for pulse wave voltage.
Please use at rated coil voltage. Please refer to characteristic data and set up adequate voltage in case of use at over voltage.

 SAFETY STANDARDS
TypeComplianceContact rating

UL

UL478
UL508

Flammability: UL 94-V0 (plastics)

E45026
CSA

0.5A, 120VAC (resistive)
1A, 30VDC (resistive)
0.15A 48VDC (resistive)

C22.2 No. 14LR35579

3

SY Series■ DIMENSIONS•

Dimensions
7.7 max.
7.4 typ0.5(0.85)

0.28

0.3
2.54

3.2

9.7 max.
9.5 typ.

12.7 max.
12.5 typ

0.5

7.62

0.2
5.08

(1.16)*Dimensions of the terminals do not include thickness of pre-solder.

•

Schematics(BOTTOM VIEW)(BOTTOM VIEW)

2
NC

5COM

5.08

1

PC Board Mounting Hole Layout

6 -φ0.8(0.85) 2.54

NO
1096
*

7.62

(1.16)•Tolerance of PC board mounting hole layout:±0.1 unless otherwise specified.

( ): Reference value
Unit: mm

SY Series■ CHARACTERISTIC DATA(Characteristic data is not guaranteed value but measured values of samples from production line.)

TimingCoil temperature rise

4Temperature rise℃)(2Operate

1

Nominal viltage multiplying factor

2.4

60

3Time(ms)Operating range (1.5 to 12VDC coil)

80

2A0A

40
1A
20

Release
0.2

0.3

0.4

0.5

0.6

00.1

Nominal voltage multiplying factor

Nominal voltage multiplying factor

2.4
2.2
0A

2.0
1.8
1.6

1A

1.4
1.2il)(hot covoltageperateotsu
0.8 Mcoil)ge (coolrate volta
0.6
Must ope

1.0020406080

0.4

0.501.6
1.4

1A

1.2

Distribution (%)

Operations (x104)

0.620406080100il)(hot covoltageperateotsu
0.8 Mol coil)ltage (coerate vo
0.6
Must op

AC resistive

10.5
0.4
DC inductive (t=7ms)
0.3
DC resistive
0.2

1.020406080

100051020 304050

100200

Ambient Temperature℃)(Contact voltage (V)Distribution of contact resistanceDistribution of contact resistance80

SY-9-K
n=140MakeBreakSY-9W-K
n=40604030AC inductive (cosφ=0.4)

0.1

200.5
1.0
Contact Current (A)

0.82

1.8

605432il)ge (hot corate volta
Must opecoil)ge (coolrate volta
Must ope

1.000A

2.0100AC120V resistive

1.2

Maximum switching power

80

10

1.4

Operating range (24VDC coil)
2.2

Life curve

DC24V resistive

1A

1.6

Ambient temperature(℃)

Ambient Temperature℃)(504030
200.6

1.8

2.4

0100

0.3

2.0

Coil power (W)Coil power (W)Operating range (18VDC coil)

0.2

Contact current (A)0.1Distribution (%)

00A

2.2Make
Break402040506070
Contact resistance (mΩ)

8030405060
70
Contact resistance (mΩ)

80

SY Series■ CHARACTERISTIC DATA(Characteristic data is not guaranteed value but measured values of samples from production line.)

Distribution of operate & release voltage
60
OperateRelease30
2060
4010 20 30 40 50 60 70
80
Nominal voltage multiplying factor (%)

0.4 0.6

Mechanical life testxxx

SY-9-K
n=20
1,200 operations/min.

2Release voltage

0100
50xxxxxxx Make

2010BreakInitial

100200500

Operations (x10⁴)

1.2 1.4Time (ms)1.61.8

201231000

20008648910

Electrical life test

Operate voltage

xxxxxxSY-12W-K
n=830 operations/min.
DC24V 1A (resistive)

2010050

4 5 6 7
Bounce time (ms)

10Release voltagexxx

20
10xxx Make

Initial135Operations (x10⁴)

10x
Break
20

Voltage (V)4xVoltage (V)x40Electrical life test

Contact resistance (mΩ)

Contact resistance (mΩ) Voltage (V)x110

Operate voltage

60.8

Contact resistance (mΩ)

0OperateRelease
60202010SY-9-K
n=14080
Distribution (%)

40

Distribution of bounce time100

SY-9-K
n=140

OperateRelease80
Distribution (%)

Distribution (%)

50

Distribution of operate & release time100

SY-9-K
n=14086x

Operate voltage

x4x x x xxx

Release voltage

20 SY-12-K, n=880 30 operations/min.

DC48V wireless spring relay (WJ-926)

x

60
40xxx

20
Initialxx Make

15x xxBreak

10 1520 30 50Operations (x10⁴)

SY Series
CAUTIONS・All values mentioned in this datasheet are provided under ideal conditions. Please perform theconfirmation test before actual use.
・Reflow soldering is prohibited.
・Do not use relays in the atmosphere with sulfide gas, chloride gas or nitric oxide. Contact resistance
may increase.
・Do not use silicon or silicon-containing product or materials near relays. It may cause contact failure.

GENERAL INFORMATION
1. RoHS Compliance• All relays produced by FCL Components are compliant with RoHS directive 2011/65/EU, including
commission delegated directive 2015/863.

2. Recommended lead free solder condition• Lead free solder plating on relay terminals is Sn-3.0Ag-0.5Cu, unless otherwise specified.
This material has been verified to be compatible with PbSn assembly process.

• Recommended solder for assembly: Sn-3.0Ag-0.5Cu.
Flow Solder Condition:
Pre-Heating:Soldering:

Maximum 120˚C within 90 sec.
Dip within 5 sec. at 255°C±5°C solder bath

Relay must be cooled by air immediately after soldering

Solder by Soldering Iron:
Soldering Iron: 30-60W
Temperature: Maximum 340-360˚C
Duration:
Maximum 3 sec.

We highly recommend that you confirm your actual solder conditions
3. Moisture Sensitivity• Moisture Sensitivity Level standard is not applicable to electromechanical relays, unless otherwise
indicated.

4. Tin Whiskers• Dipped SnAgCu solder is known as presenting a low risk to tin whisker development. No considerable
length whisker was found by our in house test.

ContactJapan
FCL COMPONENTS LIMITED
Shinagawa Seaside Park Tower
12-4, Higashi-shinagawa 4-chome,
Tokyo 140 0002, Japan
Tel: +81-3-3450-1682
Email: fcl-contact@cs.fcl-components.com

North and South America
FCL COMPONENTS AMERICA, INC.
2055 Gateway Place Suite 480,
San Jose, CA 95110 USA
Tel: +1-408-745-4900
Email: fcai.components@fcl-components.com

Asia Pacific
FCL COMPONENTS ASIA PTE LTD.
No. 20 Harbour Drive, #07-01B
Singapore 117612
Tel: +65-6375-8560
Email: fcal@fcl-components.com

China
FCL COMPONENTS (SHANGHAI) CO., LTD.
Unit 1105, Central Park - Jing An,
No.329 Heng Feng Road, Shanghai 200070,
China
Tel: +86-21-3253 0998
Email: fcsh@fcl-components.com

EuropeFCL COMPONENTS EUROPE B.V.
Diamantlaan 25
2132 WV Hoofddorp, Netherlands
Tel: +31-23-556-0910
Email: info.fceu@cs.fcl-components.com

Web: www.fcl-components.com/en/© 2024 FCL Components Limited. All rights reserved. All trademarks or registered trademarks are the property of their respective
owners.
FCL Products are intended for general use, including without limitation, in personal, household and office environments, in buildings
and for ordinary use in the industry. FCL Products are not intended to be used in applications where extremely high safety is required(”High Safety Required Applications”), such as, but not limited to, applications in nuclear facilities, in aircraft automatic flight control, in air
traffic control, in mass transit system control, in missile launch system, in weapon systems, in medical equipment for life support or any
application involving a direct serious risk of physical injury or death.
Please do not use FCL Products without securing the sufficient safety and reliability required for the High Safety Required Applications.
In addition, FCL shall not be liable against the customer and/or any third party for any claims or damages arising in connection with theuse of FCL Products in the High Safety Required Applications.
FCL warrants that its Products, if properly used and services, will conform to their specification and will be free from defects in material
and workmanship for twelve months from delivery.
The implied warranties of merchantability and fitness for a particular purpose and all other warranties, representations and conditions,express or implied by statute, trade usage or otherwise, expect as set forth in this warranty, are excluded and shall not apply to theProducts delivered.
The contents, data and information in this datasheet are provided by FCL Components Limited as a service only to its user and only for
general information purposes. The use of the contents, data and information provided in this datasheet is at the users’ own risk.
FCL has assembled this datasheet with care and will endeavor to keep the contents, data and information correct, accurate, comprehensive, complete and up to date.
FCL Components Limited and affiliated companies do however not accept any responsibility or liability on their behalf, nor on behalf of
its employees, for any loss or damage, direct, indirect or consequential, with respect to this datasheet, its contents, data, and information
and related graphics and the correctness, reliability, accuracy, comprehensiveness, usefulness, availability and completeness thereof.
Nor do FCL Components Limited and affiliated companies accept on their behalf, nor on behalf of its employees, any responsibility orliability with respect to these datasheets, its contents, data, information and related graphics and the correctness, reliability, accuracy,comprehensiveness, usefulness, availability and completeness thereof. Rev. February 1, 2024.