SF37G A0G Equivalent & Substitute Parts

Part Overview

The SF37G A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 500 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical packaging requirements to ensure functional interchangeability in circuit applications.

Substiute Parts

SF37G A0G

Taiwan Semiconductor CorporationIn Stock: 785SF37G A0G Datasheet

Current PartRFQ

1N5405-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 21601N5405-E3/54 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF37G A0G is determined by the following critical parameters:

Electrical Specifications:

• Voltage - DC Reverse (Vr) (Max): 500 V minimum
• Current - Average Rectified (Io): 3 A minimum
• Package / Case: DO-201AD, Axial (mechanical compatibility)
• Mounting Type: Through Hole (circuit board interface)

Compliance & Environmental:

• RoHS3 Compliant status
• Operating Temperature Range: -55°C to 150°C minimum

The substitute part 1N5405-E3/54 meets these core requirements, enabling direct functional replacement in applications where the SF37G A0G is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the SF37G A0G and 1N5405-E3/54 are Active product status components with ROHS3 compliance and REACH unaffected status. Selection between these parts is based on the following factors:

SF37G A0G is suitable for applications requiring fast recovery characteristics (35 ns reverse recovery time) and a maximum forward voltage of 1.7 V at 3 A, with an operating temperature range of -55°C to 150°C.

1N5405-E3/54 is suitable for applications where lower forward voltage drop (1.2 V at 3 A) is beneficial for power efficiency, with an operating temperature range of -50°C to 150°C. This part is available in higher inventory quantities.

Both parts share identical voltage and current ratings, package configuration, and compliance certifications, making them functionally interchangeable for 500 V, 3 A rectification applications in DO-201AD through-hole circuits.

Frequently Asked Questions (FAQ)

Q: Can the 1N5405-E3/54 directly replace the SF37G A0G in my circuit?

A: Yes. Both parts meet the core electrical specifications of 500 V reverse voltage and 3 A average rectified current, use identical DO-201AD axial through-hole packaging, and are RoHS3 compliant. Direct substitution is supported from an electrical and mechanical standpoint.

Q: What is the difference in forward voltage between these parts?

A: The SF37G A0G has a maximum forward voltage of 1.7 V at 3 A, while the 1N5405-E3/54 has a maximum forward voltage of 1.2 V at 3 A. The lower forward voltage of the 1N5405-E3/54 results in reduced power dissipation in applications operating at full rated current.

Q: Are there temperature range differences I should consider?

A: The SF37G A0G operates from -55°C to 150°C, while the 1N5405-E3/54 operates from -50°C to 150°C. For applications requiring operation below -50°C, the SF37G A0G is the appropriate selection.

Q: Do both parts have the same reverse leakage current?

A: Yes. Both the SF37G A0G and 1N5405-E3/54 specify a reverse leakage current of 5 µA at 500 V, ensuring equivalent reverse bias performance.

Q: What packaging options are available for these substitute parts?

A: The SF37G A0G is supplied in standard through-hole format. The 1N5405-E3/54 is available in Cut Tape (CT) and Tape & Reel (TR) packaging options, providing flexibility for different procurement and assembly workflows.

Q: Are both parts compliant with environmental and trade regulations?

A: Yes. Both the SF37G A0G and 1N5405-E3/54 are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080.