SF32G A0G Equivalent & Substitute Parts

Part Overview

The SF32G A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This diode is classified as Active product status and features fast recovery characteristics with a reverse recovery time of 35 ns, making it suitable for applications requiring rapid switching performance. Equivalent and substitute parts are identified based on matching electrical ratings, package compatibility, and mechanical specifications to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Capacitance @ Vr, F	80 pF @ 4 V, 1 MHz
Package / Case	DO-201AD, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SF32G A0G is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-201AD, Axial (mandatory for mechanical fit)
Mounting Type: Through Hole (mandatory for board compatibility)

Compliance Requirements:

RoHS3 Compliant status
REACH Unaffected status
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories based on recovery speed characteristics:

Category 1: Fast Recovery Diodes - Parts with reverse recovery time ≤ 500 ns and > 200 mA (Io). These provide direct functional equivalence to the SF32G A0G.

Category 2: Standard Recovery Diodes - Parts with reverse recovery time > 500 ns and > 200 mA (Io). These provide electrical equivalence but with different switching performance characteristics.

Parameter Comparison

Parameter	SF32G A0G	1N5401-E3/54	1N5401-E3/73	60S1-TP	GP30B-E3/54
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Micro Commercial Co	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	3 A	3 A	3 A	6 A	3 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	1.2 V @ 3 A	1.2 V @ 3 A	1 V @ 6 A	1.2 V @ 3 A
Speed Classification	Fast Recovery ≤ 500 ns	Standard Recovery > 500 ns	Standard Recovery > 500 ns	Standard Recovery > 500 ns	Standard Recovery > 500 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C	-50°C ~ 150°C	-50°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 175°C
Product Status	Active	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

The 1N5401-E3/54 and 1N5401-E3/73 from Vishay General Semiconductor - Diodes Division are direct electrical equivalents to the SF32G A0G. Both parts maintain identical voltage and current ratings (100 V, 3 A), identical reverse leakage current (5 µA @ 100 V), and identical package configuration (DO-201AD, Axial). Both are Active product status with ROHS3 compliance and unlimited moisture sensitivity level. The primary difference is packaging format: 1N5401-E3/54 is supplied in Cut Tape (CT), while 1N5401-E3/73 is also supplied in Cut Tape (CT). These parts are suitable for direct replacement in new designs.

The GP30B-E3/54 from Vishay General Semiconductor - Diodes Division is classified as SUPERECTIFIER® series and provides electrical equivalence with extended operating temperature range (-65°C ~ 175°C versus -55°C ~ 150°C). This part is Active product status with ROHS3 compliance and is suitable for applications requiring enhanced temperature performance.

Secondary Substitute (Not For New Designs):

The 60S1-TP from Micro Commercial Co is rated for 6 A average rectified current, exceeding the 3 A requirement of the SF32G A0G. This part carries "Not For New Designs" product status and is not recommended for new circuit development. The higher current rating does not provide functional advantage for 3 A applications and introduces obsolescence risk.

Compliance Verification:

All recommended substitute parts maintain ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited), ensuring regulatory and environmental compatibility with the original SF32G A0G specification.

Frequently Asked Questions (FAQ)

Q: Can the 1N5401-E3/54 directly replace the SF32G A0G in existing circuits?

A: Yes. Both parts share identical electrical ratings (100 V reverse voltage, 3 A average rectified current), identical reverse leakage current (5 µA @ 100 V), and identical DO-201AD axial through-hole package configuration. The primary difference is recovery speed classification: the SF32G A0G features fast recovery (35 ns), while the 1N5401-E3/54 features standard recovery (> 500 ns). In applications where switching speed is not critical, direct substitution is valid. In high-frequency switching applications, recovery speed differences must be evaluated against circuit requirements.

Q: What is the difference between 1N5401-E3/54 and 1N5401-E3/73?

A: Both parts are electrically identical with matching voltage ratings (100 V), current ratings (3 A), forward voltage (1.2 V @ 3 A), and operating temperature range (-50°C ~ 150°C). The designation suffix indicates different packaging tape specifications from the manufacturer. Both are supplied in Cut Tape (CT) format. Selection between these variants is determined by procurement and assembly equipment compatibility.

Q: Why is the 60S1-TP listed as a substitute if it has "Not For New Designs" status?

A: The 60S1-TP is included in the substitute list based on the provided input parameters, which identified it as a substitute for the SF32G A0G. However, its "Not For New Designs" product status indicates that Micro Commercial Co has discontinued active development and support for this part. For new circuit designs, the 1N5401-E3/54, 1N5401-E3/73, or GP30B-E3/54 are recommended as they maintain Active product status.

Q: Does the GP30B-E3/54 provide any advantage over the 1N5401-E3/54?

A: The GP30B-E3/54 extends the operating temperature range to -65°C ~ 175°C compared to -50°C ~ 150°C for the 1N5401-E3/54. This provides enhanced performance in extreme temperature environments. Both parts maintain identical voltage and current ratings (100 V, 3 A) and identical reverse leakage current (5 µA @ 100 V). Selection depends on application temperature requirements.

Q: Are all substitute parts compatible with the DO-201AD through-hole footprint?

A: Yes. All substitute parts listed (1N5401-E3/54, 1N5401-E3/73, 60S1-TP, and GP30B-E3/54) are specified with DO-201AD axial package configuration and through-hole mounting type. This ensures mechanical and electrical compatibility with existing PCB layouts designed for the SF32G A0G.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited). These certifications ensure regulatory compliance and environmental compatibility across all recommended substitutes.

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