BAT54SW-7 Equivalent & Substitute Parts

Part Overview

The BAT54SW-7 is a Schottky diode array in a 1 Pair Series Connection configuration manufactured by Diodes Incorporated. This component is rated for 30 V DC reverse voltage and 200 mA average rectified current per diode, housed in an SC-70, SOT-323 surface mount package. The BAT54SW-7 is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Series Connection
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io) (per Diode)	200 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA
Speed	Small Signal ≤ 200mA (Io), Any Speed
Reverse Recovery Time (trr)	5 ns
Current - Reverse Leakage @ Vr	2 µA @ 25 V
Operating Temperature - Junction	-65°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	SC-70, SOT-323
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAT54SW-7 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Series Connection
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io) (per Diode): 200 mA minimum
Mounting Type: Surface Mount
Package / Case: SC-70, SOT-323 or compatible variant

Secondary Compatibility Factors:

Reverse Recovery Time (trr): 5 ns
Current - Reverse Leakage @ Vr: 2 µA @ 25 V
RoHS3 Compliance
MSL Rating: 1 (Unlimited)

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (Identical Electrical and Package Specifications): Parts that match all primary and secondary parameters without deviation, maintaining full pin-for-pin and functional compatibility.

Category B - Functional Equivalents (Enhanced or Alternative Specifications): Parts that exceed minimum electrical requirements or utilize alternative package designations while maintaining functional compatibility within the application circuit.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Ir @ Vr	Tj (Max)	Package	Product Status
BAT54SW-7	Diodes Incorporated	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	125°C	SC-70, SOT-323	Discontinued
BAT54SW-7-F	Diodes Incorporated	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	125°C	SC-70, SOT-323	Active
1PS70SB14,115	NXP Semiconductors	30 V	200 mA	800 mV @ 100 mA	—	2 µA @ 25 V	150°C	SC-70, SOT-323	Active
BAT5404WH6327XTSA1	Infineon Technologies	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C	SC-70, SOT-323	Active
BAT54ST-TP	Micro Commercial Co	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	125°C	SOT-523	Active
BAT54SW RVG	Taiwan Semiconductor Corporation	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	125°C	SC-70, SOT-323	Active
BAT54SW,115	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C	SC-70, SOT-323	Active
BAT54SW_R1_00001	Panjit International Inc.	30 V	200 mA	600 mV @ 100 mA	—	2 µA @ 25 V	125°C	SC-70, SOT-323	Active
BAT54SWFILM	STMicroelectronics	40 V	300 mA	900 mV @ 100 mA	5 ns	1 µA @ 30 V	150°C	SC-70, SOT-323	Active
BAT54SWT-TP	Micro Commercial Co	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	125°C	SC-70, SOT-323	Active
BAT54SWT1G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	125°C	SC-70, SOT-323	Active

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

BAT54SW-7-F (Diodes Incorporated) is the direct replacement for the discontinued BAT54SW-7. This part maintains identical electrical parameters and package configuration. The only difference is packaging format (Tape & Reel versus bulk), which does not affect component performance or compatibility.

Pin-Compatible Alternatives (SC-70, SOT-323 Package):

The following parts are pin-compatible with identical or superior electrical ratings:

BAT54SWT1G (onsemi): Active product with identical configuration, 200 mA current rating, and 30 V reverse voltage. Forward voltage is 800 mV @ 100 mA. Suitable for direct substitution.
BAT54SW,115 (Nexperia USA Inc.): Active product with AEC-Q101 automotive qualification. Identical electrical specifications with 800 mV forward voltage. Extended junction temperature rating to 150°C. Suitable for direct substitution.
BAT54SW_R1_00001 (Panjit International Inc.): Active product with identical configuration and current ratings. Forward voltage is 600 mV @ 100 mA, providing superior performance. Suitable for direct substitution.
BAT54SW RVG (Taiwan Semiconductor Corporation): Active product with identical specifications. Suitable for direct substitution.
1PS70SB14,115 (NXP Semiconductors): Active product with AEC-Q100 automotive qualification. Identical electrical specifications with 800 mV forward voltage and extended junction temperature to 150°C. Suitable for direct substitution.
BAT5404WH6327XTSA1 (Infineon Technologies): Active product with identical electrical specifications. Forward voltage is 800 mV @ 100 mA. Extended junction temperature to 150°C. Suitable for direct substitution.

Package Variant (SOT-523):

BAT54ST-TP (Micro Commercial Co): Active product with identical electrical specifications but alternative package designation (SOT-523). This part requires PCB layout modification and is not recommended for direct board-level replacement without design revision.

Enhanced Rating Alternative:

BAT54SWFILM (STMicroelectronics): Active product with enhanced specifications (40 V reverse voltage, 300 mA current rating). This part exceeds the BAT54SW-7 requirements and is suitable for applications requiring higher voltage or current margins. Forward voltage is 900 mV @ 100 mA.

Product Status Consideration:

All recommended substitutes maintain Active product status, ensuring long-term availability and supply chain stability. The BAT54SW-7 is discontinued at DiGi Electronics, making transition to an active equivalent necessary for new designs and ongoing production.

Frequently Asked Questions (FAQ)

Q: Can BAT54SW-7-F be used as a direct replacement for BAT54SW-7?

A: Yes. BAT54SW-7-F is manufactured by Diodes Incorporated and maintains identical electrical and mechanical specifications. The difference is packaging format (Tape & Reel versus bulk), which does not affect component functionality or circuit performance.

Q: What is the difference between BAT54SWT1G and BAT54SW-7?

A: Both parts share identical diode configuration, voltage rating (30 V), and current rating (200 mA). The forward voltage differs slightly (800 mV versus 1 V @ 100 mA). Both are housed in SC-70, SOT-323 packages and are pin-compatible. BAT54SWT1G is manufactured by onsemi and maintains Active product status.

Q: Is BAT54SWFILM a suitable replacement for BAT54SW-7?

A: BAT54SWFILM exceeds the electrical requirements of BAT54SW-7 with higher voltage (40 V) and current (300 mA) ratings. It is functionally compatible and suitable for applications where enhanced performance margins are beneficial. The package remains SC-70, SOT-323, maintaining mechanical compatibility.

Q: Why does BAT54ST-TP have a different package designation (SOT-523)?

A: BAT54ST-TP uses SOT-523 package designation instead of SC-70, SOT-323. While electrically equivalent, this package variant requires different PCB footprint and layout considerations. Direct board-level substitution without design modification is not recommended.

Q: What is the significance of automotive qualification (AEC-Q100, AEC-Q101)?

A: Automotive qualification indicates the part meets automotive industry reliability and testing standards. BAT54SW,115 (AEC-Q101) and 1PS70SB14,115 (AEC-Q100) are qualified for automotive applications. These parts are suitable for general-purpose applications and provide additional quality assurance.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage variations (600 mV to 1 V @ 100 mA) are within typical Schottky diode specifications. In most applications, these differences have minimal impact on circuit operation. Applications with tight voltage margin requirements should evaluate specific forward voltage specifications against circuit design parameters.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and MSL Rating 1 (Unlimited), matching the environmental and moisture sensitivity specifications of the BAT54SW-7.

Q: Which substitute offers the best availability?

A: BAT54SW,115 (Nexperia USA Inc.) shows the highest inventory level at 1,000,400 pieces, providing superior supply chain availability. BAT54SWT1G (onsemi) with 605,200 pieces also offers strong availability.

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