BAT74

Schottky barrier double diode

Rev. 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. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
Per diode
IF forward current - - 200 mA
VR reverse voltage - - 30 V
VF forward voltage IF = 100 mA - - 800 mV

2. Pinning information
Table 2. Pinning
Pin Description Simplified outline Graphic symbol
1 cathode (diode 1)
4 3 4 3
2 cathode (diode 2)
3 anode (diode 2)
4 anode (diode 1)
1 2 1 2
006aaa434
Nexperia BAT74
Schottky barrier double diode

3. Ordering information
Table 3. Ordering information
Type number Package
Name Description Version
BAT74 - plastic surface-mounted package; 4 leads SOT143B

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).
Symbol Parameter Conditions Min Max Unit
Per diode
VR reverse voltage - 30 V
IF forward current - 200 mA
IFRM repetitive peak forward tp ≤ 1 s; δ ≤ 0.5 - 300 mA
current
IFSM non-repetitive peak forward tp < 10 ms - 600 mA
current
Ptot total power dissipation Tamb ≤ 25 °C - 230 mW
Tj junction temperature - 125 °C
Tamb ambient temperature −65 +125 °C
Tstg storage temperature −65 +150 °C
Double diode operation
VR reverse voltage - 30 V
[1] - 60 V
IF forward current [2] - 110 mA
IFRM repetitive peak forward tp ≤ 1 s; δ ≤ 0.5 - 200 mA
current

[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.

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 2 of 10

Nexperia BAT74
Schottky barrier double diode

6. Thermal characteristics
Table 6. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
Rth(j-a) thermal resistance from in free air [1] - - 500 K/W
junction to ambient

[1] Refer to SOT143B standard mounting conditions.

7. Characteristics
Table 7. Characteristics
Tamb = 25 °C unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Per diode
VF forward voltage IF = 0.1 mA - - 240 mV
IF = 1 mA [1] - - 320 mV
IF = 10 mA - - 400 mV
IF = 30 mA - - 500 mV
IF = 100 mA - - 800 mV
IR reverse current VR = 25 V [2] - - 2 μA
Cd diode capacitance VR = 1 V; f = 1 MHz - - 10 pF
trr reverse recovery [3] - - 5 ns
time

[1] 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.

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 3 of 10

Nexperia BAT74
Schottky barrier double diode

msa892 msa893
103 103

IF (1) (2) (3) IR (1)

(mA) (μA)

102 102
(2)

10 10

(1) (2) (3)

1 1 (3)

10−1 10−1
0 0.4 0.8 1.2 0 10 20 30
VF (V) VR (V)

(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 Fig 2. Reverse current as a function of reverse
voltage; typical values voltage; typical values

msa891 msa894
15 300

Cd Ptot
(pF) (mW)

10 200

5 100

0 0
0 10 20 30 0 75 150
VR (V) Tamb (°C)

f = 1 MHz; Tamb = 25 °C Standard footprint

Fig 3. Diode capacitance as a function of reverse Fig 4. Power derating curve
voltage; typical values

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 4 of 10

Nexperia BAT74
Schottky barrier double diode

8. Test information

tr tp
t
D.U.T.
10 %
RS = 50 Ω
IF + IF trr
SAMPLING t
OSCILLOSCOPE
V = VR + IF × RS Ri = 50 Ω
90 % (1)
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
1.9 0.9

4 3

0.45
0.15
2.5 1.4
2.1 1.2

1 2
0.88 0.48 0.15
0.78 0.38 0.09
1.7

Dimensions in mm 04-11-16

Fig 6. Package outline BAT74 (SOT143B)

10. Packing information

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

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 5 of 10

Nexperia BAT74
Schottky barrier double diode

11. Soldering

3.25
0.6
(3×)
0.5
(3×)

1.9

solder lands
0.7 0.6
(3×) (3×)
solder resist

2 3 solder paste

occupied area
0.7 0.6
Dimensions in mm

0.75 0.95

0.9

1 sot143b_fr

Fig 7. 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

1.2 sot143b_fw

Fig 8. Wave soldering footprint BAT74 (SOT143B)

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 6 of 10

Nexperia BAT74
Schottky barrier double diode

12. 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 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 7 of 10

Nexperia BAT74
Schottky barrier double diode

13. 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 product
status information is available on the Internet at URL http://www.nexperia.com.

13.2 Definitions malfunction of an Nexperia product can reasonably be expected to result in

personal injury, death or severe property or environmental damage.
Nexperia accepts no liability for inclusion and/or use of Nexperia products in
Draft — The document is a draft version only. The content is still under
such equipment or applications and therefore such inclusion and/or use is at
internal review and subject to formal approval, which may result in
the customer’s own risk.
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included Applications — Applications that are described herein for any of these
herein and shall have no liability for the consequences of use of such products are for illustrative purposes only. Nexperia makes no
information. representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is Customers are responsible for the design and operation of their applications
intended for quick reference only and should not be relied upon to contain and products using Nexperia products, and Nexperia accepts no liability for
detailed and full information. For detailed and full information see the any assistance with applications or customer product design. It is
relevant full data sheet, which is available on request via the local Nexperia customer’s sole responsibility to determine whether the Nexperia product is
sales office. In case of any inconsistency or conflict with the short data suitable and fit for the customer’s applications and products planned, as well
sheet, the full data sheet shall prevail. as for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards to
Product specification — The information and data provided in a Product minimize the risks associated with their applications and products.
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly Nexperia does not accept any liability related to any default, damage, costs
agreed otherwise in writing. In no event however, shall an agreement be or problem which is based on any weakness or default in the customer’s
valid in which the Nexperia product is deemed to offer functions and applications or products, or the application or use by customer’s third party
qualities beyond those described in the Product data sheet. customer(s). Customer is responsible for doing all necessary testing for the
customer’s applications and products using Nexperia products in order to
avoid a default of the applications and the products or of the application or
13.3 Disclaimers use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.

Limited warranty and liability — Information in this document is believed to Limiting values — Stress above one or more limiting values (as defined in
be accurate and reliable. However, Nexperia does not give any the Absolute Maximum Ratings System of IEC 60134) will cause permanent
representations or warranties, expressed or implied, as to the accuracy or damage to the device. Limiting values are stress ratings only and (proper)
completeness of such information and shall have no liability for the operation of the device at these or any other conditions above those given in
consequences of use of such information. the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
In no event shall Nexperia be liable for any indirect, incidental, punitive,
repeated exposure to limiting values will permanently and irreversibly affect
special or consequential damages (including - without limitation - lost profits,
the quality and reliability of the device.
lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such Terms and conditions of commercial sale — Nexperia products are sold
damages are based on tort (including negligence), warranty, breach of subject to the general terms and conditions of commercial sale, as
contract or any other legal theory. published at http://www.nexperia.com/profile/terms, unless otherwise agreed
Notwithstanding any damages that customer might incur for any reason in a valid written individual agreement. In case an individual agreement is
whatsoever, Nexperia' s aggregate and cumulative liability towards concluded only the terms and conditions of the respective agreement shall
customer for the products described herein shall be limited in accordance apply. Nexperia hereby expressly objects to applying the customer’s general
with the Terms and conditions of commercial sale of Nexperia. terms and conditions with regard to the purchase of Nexperia products by
customer.
Right to make changes — Nexperia reserves the right to make changes to
information published in this document, including without limitation No offer to sell or license — Nothing in this document may be interpreted
specifications and product descriptions, at any time and without notice. This or construed as an offer to sell products that is open for acceptance or the
document supersedes and replaces all information supplied prior to the grant, conveyance or implication of any license under any copyrights,
publication hereof. patents or other industrial or intellectual property rights.

Suitability for use — Nexperia products are not designed, authorized or Export control — This document as well as the item(s) described herein
warranted to be suitable for use in life support, life-critical or safety-critical may be subject to export control regulations. Export might require a prior
systems or equipment, nor in applications where failure or authorization from national authorities.

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 8 of 10

Nexperia BAT74
Schottky barrier double diode

Quick reference data — The Quick reference data is an extract of the

product data given in the Limiting values and Characteristics sections of this
13.4 Trademarks
document, and as such is not complete, exhaustive or legally binding. Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.

BAT74 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2010. All rights reserved.

Product data sheet Rev. 03 — 19 April 2010 9 of 10

Nexperia BAT74
Schottky barrier double diode

14. Contents
1 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 General description . . . . . . . . . . . . . . . . . . . . . 1
1.2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1
1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 Quick reference data . . . . . . . . . . . . . . . . . . . . 1
2 Pinning information . . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2
4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 2
6 Thermal characteristics . . . . . . . . . . . . . . . . . . 3
7 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 3
8 Test information . . . . . . . . . . . . . . . . . . . . . . . . . 5
9 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 5
10 Packing information . . . . . . . . . . . . . . . . . . . . . 5
11 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . 7
13 Legal information. . . . . . . . . . . . . . . . . . . . . . . . 8
13.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 8
13.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
13.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
13.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
14 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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