BAT74
Schottky barrier double diodeRev. 03 — 19 April 2010

Product data sheet

1. Product profile
1.1 General description
Planar Schottky barrier double diode with an integrated guard ring for stress protection.
Two electrically isolated Schottky barrier diodes, encapsulated in a small SOT143B
Surface-Mounted Device (SMD) plastic package.

1.2 Features and benefits
 Low forward voltage
 Guard-ring protected Small SMD plastic package

1.3 Applications

Ultra high-speed switching
Voltage clamping
Protection circuits
Blocking diodes

1.4 Quick reference data
Table 1.
SymbolQuick reference data
ParameterConditions

Min

TypMaxUnit

Per diodeIF

forward current--200mAVR

reverse voltage

--

30V

VF

forward voltage--800mV

IF = 100 mA

2. Pinning information
Table 2.

Pinning

Pin

Description

1

cathode (diode 1)

2

cathode (diode 2)

3

anode (diode 2)

4anode (diode 1)

Simplified outline

Graphic symbol

43

4

1

2

1

3

2006aaa434

BAT74Nexperia

Schottky barrier double diode3. Ordering information
Table 3.

Ordering information

Type number
BAT74

Package
NameDescription

Version-plastic surface-mounted package; 4 leadsSOT143B

4. Marking
Table 4.

Marking codes

Type number

Marking code[1]

BAT74*L4[1]* = -: made in Hong Kong
* = p: made in Hong Kong
* = t: made in Malaysia* = W: made in China

5. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
SymbolParameter

Conditions

MinMaxUnit

Per diodeVRreverse voltage

-30

V

IF

forward current-200mA

IFRM

repetitive peak forwardcurrent-300mA

IFSM

non-repetitive peak forward tp < 10 mscurrent-600mA

Ptot

total power dissipation-230mW

Tj

junction temperature-125°C

Tambambient temperature−65+125°C

Tstg

storage temperature−65+150°C

tp ≤ 1 s; δ ≤ 0.5

Tamb ≤ 25 °C

Double diode operationreverse voltage

VRBAT74

Product data sheet

IFforward current

IFRM

repetitive peak forwardcurrent

tp ≤ 1 s; δ ≤ 0.5

-30

V

[1]

-60

V

[2]

-110mA-200mA[1]

Series connection.

[2]

If both diodes are in forward operation at the same moment, total device current is max. 110 mA. If one
diode is in reverse operation and the other is in forward operation at the same moment, total device current
is max. 200 mA.

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

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BAT74Nexperia

Schottky barrier double diode6. Thermal characteristics
Table 6.

Thermal characteristics

SymbolParameter

Rth(j-a)[1]Conditions

Min

TypMax

Unit

--

500

K/W

Min

TypMaxUnit--240mV--320mV

IF = 10 mA--400mV

IF = 30 mA--500mVthermal resistance fromjunction to ambientin free air[1]

Refer to SOT143B standard mounting conditions.

7. Characteristics
Table 7.
Characteristics
Tamb = 25 °C unless otherwise specified.
SymbolParameter

Conditions

forward voltage

IF = 0.1 mA

Per diodeVF

IF = 1 mA[1]

IF = 100 mA
IRreverse current

VR = 25 VCd

diode capacitance

VR = 1 V; f = 1 MHztrr
[1]

BAT74

Product data sheet

reverse recovery
time

[2]

[3]

--

800mV-

-

2μA-

-

10pF-

-

5ns

Temperature coefficient of forward voltage −0.6 %/K.

[2]

Pulse test: tp = 300 μs; δ = 0.02.

[3]

When switched from IF = 10 mA to IR = 10 mA; RL = 100 Ω; measured at IR = 1 mA.

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

3 of 10

BAT74Nexperia

Schottky barrier double diodemsa892

103
IF(mA)

msa893103
IR(μA)(1) (2) (3)102(1)

102(2)

10101

10−1(1)(2) (3)

100.4

0.8

VF (V)

1.2(3)

10−10(1) Tamb = 125 °C(1) Tamb = 125 °C(2) Tamb = 85 °C(2) Tamb = 85 °C(3) Tamb = 25 °C(3) Tamb = 25 °C

Fig 1.

Forward current as a function of forward
voltage; typical values

Fig 2.

VR (V)

30

Reverse current as a function of reverse
voltage; typical values
msa894300

Cd(pF)

Ptot
(mW)

10200

5100

01020

VR (V)

030

f = 1 MHz; Tamb = 25 °C

Fig 3.

20

msa89115010

Product data sheet

75

Tamb (°C)

150Standard footprint

Diode capacitance as a function of reverse
voltage; typical values

BAT740Fig 4.

Power derating curve

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

4 of 10

BAT74Nexperia

Schottky barrier double diode8. Test information

trt

D.U.T.
RS = 50 Ωtp

10 %+ IFIFSAMPLING
OSCILLOSCOPE

trrt

Ri = 50 Ω

V = VR + IF × RS

(1)

90 %VR
mga881

input signal

output signal(1) IR = 1 mA

Fig 5.

Reverse recovery time test circuit and waveforms

9. Package outline
3.0
2.8

1.1
0.9

1.942.5
2.1

30.45
0.15

1.4
1.2

12
0.88
0.78

0.48
0.38

0.15
0.09

1.7
Dimensions in mm

Fig 6.

04-11-16

Package outline BAT74 (SOT143B)

10. Packing information
Please refer to packing information on www.nexperia.com.

BAT74

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

5 of 10

BAT74Nexperia

Schottky barrier double diode11. Soldering
3.25
0.6
(3×)
0.5
(3×)
1.9
solder lands

0.7 0.6(3×) (3×)

solder resist
2solder paste

3

occupied area
0.7 0.6
Dimensions in mm

0.75

0.95

0.9
1Fig 7.

sot143b_fr

Reflow soldering footprint BAT74 (SOT143B)
4.45
2.2
1.2(3×)1.425(3×)
solder lands
solder resist
4.6

2.575
occupied area
Dimensions in mm
1.425

preferred transport direction during soldering
1
1.2Fig 8.

BAT74

Product data sheet

sot143b_fw

Wave soldering footprint BAT74 (SOT143B)

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

6 of 10

BAT74Nexperia

Schottky barrier double diode12. Revision history
Table 9.

Revision history

Document ID

Release date

Data sheet status

Change notice

Supersedes

BAT74_3

20100419

Product data sheet-BAT74_2

Modifications:• The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.

• Legal texts have been adapted to the new company name where appropriate.
• Section 1.1 “General description”: amended• Table 1 “Quick reference data”: added• Section 4 “Marking”: updated• Section 8 “Test information”: added• Figure 5: enhanced• Figure 6: superseded by minimized package outline drawing• Section 10 “Packing information”: added• Section 11 “Soldering”: added• Section 13 “Legal information”: updated
BAT74_2

20010905

Product specification-BAT74_1

BAT74_1

19960319

Product specification

--

BAT74

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

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BAT74Nexperia

Schottky barrier double diode13. Legal information
13.1 Data sheet status
Document status[1][2]Product status[3]Definition

Objective [short] data sheet

Development

This document contains data from the objective specification for product development.

Preliminary [short] data sheet

Qualification

This document contains data from the preliminary specification.

Product [short] data sheet

Production

This document contains the product specification.

[1]

Please consult the most recently issued document before initiating or completing a design.

[2]

The term ‘short data sheet’ is explained in section “Definitions”.

[3]

The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest productstatus information is available on the Internet at URL http://www.nexperia.com.

13.2 Definitions
Draft — The document is a draft version only. The content is still underinternal review and subject to formal approval, which may result inmodifications or additions. Nexperia does not give any representations orwarranties as to the accuracy or completeness of information included
herein and shall have no liability for the consequences of use of suchinformation.
Short data sheet — A short data sheet is an extract from a full data sheetwith the same product type number(s) and title. A short data sheet isintended for quick reference only and should not be relied upon to containdetailed and full information. For detailed and full information see therelevant full data sheet, which is available on request via the local Nexperia
sales office. In case of any inconsistency or conflict with the short datasheet, the full data sheet shall prevail.
Product specification — The information and data provided in a Productdata sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement bevalid in which the Nexperia product is deemed to offer functions andqualities beyond those described in the Product data sheet.

13.3 Disclaimers
Limited warranty and liability — Information in this document is believed tobe accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy orcompleteness of such information and shall have no liability for theconsequences of use of such information.
In no event shall Nexperia be liable for any indirect, incidental, punitive,
special or consequential damages (including - without limitation - lost profits,
lost savings, business interruption, costs related to the removal orreplacement of any products or rework charges) whether or not suchdamages are based on tort (including negligence), warranty, breach ofcontract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia' s aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordancewith the Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make changes toinformation published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to thepublication hereof.
Suitability for use — Nexperia products are not designed, authorized orwarranted to be suitable for use in life support, life-critical or safety-criticalsystems or equipment, nor in applications where failure orBAT74

Product data sheet

malfunction of an Nexperia product can reasonably be expected to result inpersonal injury, death or severe property or environmental damage.
Nexperia accepts no liability for inclusion and/or use of Nexperia products insuch equipment or applications and therefore such inclusion and/or use is at
the customer’s own risk.
Applications — Applications that are described herein for any of theseproducts are for illustrative purposes only. Nexperia makes norepresentation or warranty that such applications will be suitable for thespecified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia accepts no liability forany assistance with applications or customer product design. It is
customer’s sole responsibility to determine whether the Nexperia product issuitable and fit for the customer’s applications and products planned, as well
as for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards tominimize the risks associated with their applications and products.
Nexperia does not accept any liability related to any default, damage, costs
or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party
customer(s). Customer is responsible for doing all necessary testing for thecustomer’s applications and products using Nexperia products in order toavoid a default of the applications and the products or of the application or
use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or theCharacteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — Nexperia products are soldsubject to the general terms and conditions of commercial sale, aspublished at http://www.nexperia.com/profile/terms, unless otherwise agreed
in a valid written individual agreement. In case an individual agreement isconcluded only the terms and conditions of the respective agreement shallapply. Nexperia hereby expressly objects to applying the customer’s generalterms and conditions with regard to the purchase of Nexperia products bycustomer.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or thegrant, conveyance or implication of any license under any copyrights,
patents or other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a priorauthorization from national authorities.

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

8 of 10BAT74

Nexperia

Schottky barrier double diode

Quick reference data — The Quick reference data is an extract of theproduct data given in the Limiting values and Characteristics sections of thisdocument, and as such is not complete, exhaustive or legally binding.

BAT74

Product data sheet

13.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 19 April 2010

© Nexperia B.V. 2010. All rights reserved.

9 of 10BAT74

Nexperia

Schottky barrier double diode14. Contents
1
1.1
1.2
1.3
1.4
2
34
56
78
9
101112
13
13.1
13.2
13.3
13.4

Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General description . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick reference data . . . . . . . . . . . . . . . . . . . . 1
Pinning information . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 2
Thermal characteristics . . . . . . . . . . . . . . . . . . 3
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Test information . . . . . . . . . . . . . . . . . . . . . . . . . 5
Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packing information . . . . . . . . . . . . . . . . . . . . . 5
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . 7
Legal information. . . . . . . . . . . . . . . . . . . . . . . . 8Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 8
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

14Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Please be aware that important notices concerning this document and the product(s)described herein, have been included in section ‘Legal information’.

© Nexperia B.V. 2010.

All rights reserved.

For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to:salesaddresses@nexperia.com
Date of release: 19 April 2010
Document identifier: BAT74