BAT54WS-7 Equivalent & Substitute Parts

Part Overview

The BAT54WS-7 is a Schottky diode rated for 30 V DC reverse voltage and 100 mA average rectified current in a surface mount SOD-323 package. Manufactured by Diodes Incorporated, this component is discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Active alternatives with identical or enhanced electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	100	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA	V
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	2 µA @ 25 V	µA
Capacitance @ Vr, F	10 pF @ 1V, 1MHz	pF
Technology	Schottky	—
Speed	Small Signal ≤ 200mA (Io), Any Speed	—
Mounting Type	Surface Mount	—
Package / Case	SC-76, SOD-323	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAT54WS-7 are classified based on electrical parameter compatibility within the SOD-323 package form factor. The primary substitution criteria are:

Mandatory Compatibility Parameters:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Package / Case: SOD-323 (SC-76)
Mounting Type: Surface Mount
Technology: Schottky

Current Rating Considerations:

Direct equivalents maintain 100 mA average rectified current
Substitutes with higher current ratings (200 mA, 500 mA, 1 A) are electrically compatible and provide design margin
Substitutes with higher current ratings operate within the same voltage class and package envelope

Secondary Electrical Parameters:

Forward voltage (Vf), reverse leakage current, and capacitance are secondary selection criteria
Reverse recovery time (trr) and speed classification determine switching performance suitability

Compliance and Availability:

Active product status ensures ongoing supply and manufacturing support
RoHS3 compliance is available in substitute options
Automotive-grade variants with AEC-Q101 qualification are available for regulated applications

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	C @ Vr [pF]	Product Status	RoHS Status
BAT54WS-7	Diodes Incorporated	30	100	1 @ 100 mA	5	2 @ 25 V	10 @ 1V, 1MHz	Discontinued	RoHS non-compliant
BAT54WS-7-F	Diodes Incorporated	30	100	1 @ 100 mA	5	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
BAT54WSQ-7-F	Diodes Incorporated	30	100	1 @ 100 mA	5	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
1PS76SB10,115	Nexperia USA Inc.	30	200	0.8 @ 100 mA	—	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
1PS76SB10,135	Nexperia USA Inc.	30	200	0.8 @ 100 mA	—	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
B0530WS-TP	Micro Commercial Co	30	500	0.55 @ 500 mA	—	300 @ 30 V	—	Active	ROHS3 Compliant
BAS3010A03WE6327HTSA1	Infineon Technologies	30	1000	0.47 @ 1 A	—	200 @ 30 V	35 @ 5V, 1MHz	Active	ROHS3 Compliant
BAT5403WE6327HTSA1	Infineon Technologies	30	200	0.8 @ 100 mA	5	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
BAT54JFILM	STMicroelectronics	40	300	0.9 @ 100 mA	5	1 @ 30 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
BAT54WS-E3-08	Vishay General Semiconductor - Diodes Division	30	200	0.8 @ 100 mA	5	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant
BAT54WS-E3-18	Vishay General Semiconductor - Diodes Division	30	200	0.8 @ 100 mA	5	2 @ 25 V	10 @ 1V, 1MHz	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Electrical Equivalents (100 mA Rating):

BAT54WS-7-F and BAT54WSQ-7-F from Diodes Incorporated are direct replacements with identical electrical specifications. Both are active products with RoHS3 compliance. BAT54WSQ-7-F includes AEC-Q101 automotive qualification and is supplied on Tape & Reel. BAT54WS-7-F is supplied on Cut Tape & Digi-Reel. Selection between these two depends on packaging requirements and automotive application needs.

Higher Current Capacity Substitutes (200 mA Rating):

1PS76SB10,115 and 1PS76SB10,135 from Nexperia USA Inc., BAT5403WE6327HTSA1 from Infineon Technologies, and BAT54WS-E3-08 and BAT54WS-E3-18 from Vishay General Semiconductor all provide 200 mA current capacity within the 30 V voltage class. These parts maintain identical reverse voltage and package specifications while offering increased current margin. All are RoHS3 compliant and active products. The Nexperia and Vishay parts include AEC-Q101 automotive qualification.

Enhanced Performance Substitutes (Higher Current or Voltage):

B0530WS-TP from Micro Commercial Co provides 500 mA capacity at 30 V. BAT54JFILM from STMicroelectronics provides 300 mA capacity at 40 V reverse voltage, offering both increased current handling and voltage margin. BAS3010A03WE6327HTSA1 from Infineon Technologies provides 1 A capacity at 30 V. These parts are suitable for applications requiring design margin or where higher current capacity is beneficial. All are RoHS3 compliant and active products.

Product Status Consideration:

All substitute parts listed are active products with ongoing manufacturing support. The original BAT54WS-7 is discontinued at DiGi Electronics. Selection of an active substitute ensures long-term component availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can BAT54WS-7-F be used as a direct replacement for BAT54WS-7?

A: Yes. BAT54WS-7-F is electrically identical to BAT54WS-7 with matching voltage, current, forward voltage, and reverse recovery time specifications. The primary difference is product status (active versus discontinued) and RoHS3 compliance. Both use the SOD-323 package.

Q: What is the difference between BAT54WS-7-F and BAT54WSQ-7-F?

A: Both are electrically identical with 30 V, 100 mA specifications. BAT54WSQ-7-F includes AEC-Q101 automotive qualification and is supplied on Tape & Reel. BAT54WS-7-F is supplied on Cut Tape & Digi-Reel. Selection depends on packaging requirements and whether automotive qualification is required.

Q: Can I use a 200 mA rated diode in place of the 100 mA BAT54WS-7?

A: Yes. Parts rated for 200 mA (1PS76SB10,115, 1PS76SB10,135, BAT5403WE6327HTSA1, BAT54WS-E3-08, BAT54WS-E3-18) maintain the same 30 V reverse voltage and SOD-323 package. The higher current rating provides design margin and does not create compatibility issues in circuits designed for 100 mA operation.

Q: What is the difference between BAT54WS-E3-08 and BAT54WS-E3-18?

A: Both are 200 mA Schottky diodes from Vishay with identical electrical specifications. The difference is operating temperature range: BAT54WS-E3-08 operates to 125°C maximum junction temperature, while BAT54WS-E3-18 operates from -55°C to 125°C. Selection depends on application temperature requirements.

Q: Can I use BAT54JFILM, which is rated for 40 V, in a 30 V circuit?

A: Yes. BAT54JFILM is rated for 40 V reverse voltage, which exceeds the 30 V requirement of the BAT54WS-7. The higher voltage rating provides additional margin and does not create compatibility issues. The part maintains the SOD-323 package and provides 300 mA current capacity.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant. The original BAT54WS-7 is RoHS non-compliant. If RoHS compliance is required for your application, any of the listed substitutes are suitable.

Q: Which substitute parts have automotive qualification?

A: BAT54WSQ-7-F, 1PS76SB10,115, 1PS76SB10,135, and BAT54WS-E3-08 and BAT54WS-E3-18 include AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring qualified components.

Q: What is the difference between Cut Tape & Digi-Reel and Tape & Reel packaging?

A: Both are surface mount packaging formats. Cut Tape & Digi-Reel is supplied in smaller quantities on cut tape with a reel for manual or semi-automated placement. Tape & Reel is supplied in continuous tape format optimized for automated assembly equipment. Selection depends on production volume and assembly equipment capabilities.

Q: Can I use BAS3010A03WE6327HTSA1 (1 A rated) in place of BAT54WS-7 (100 mA rated)?

A: Yes. BAS3010A03WE6327HTSA1 maintains the 30 V reverse voltage and SOD-323 package specifications. The 1 A current rating provides substantial design margin and does not create compatibility issues in circuits designed for 100 mA operation. The part is RoHS3 compliant and active.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time affects switching speed and is relevant for high-frequency applications. The BAT54WS-7 specifies 5 ns trr. Substitute parts BAT54WS-7-F, BAT54WSQ-7-F, BAT5403WE6327HTSA1, and BAT54JFILM maintain this 5 ns specification. Parts without specified trr values (Nexperia and Micro Commercial Co parts) are suitable for applications where switching speed is not a critical parameter.

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