SF36G-AP Equivalent & Substitute Parts

Part Overview

The SF36G-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 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 ratings, mechanical packaging, and thermal operating ranges to ensure functional interchangeability in circuit applications.

Substiute Parts

SF36G-AP

Micro Commercial CoIn Stock: 946SF36G-AP Datasheet

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1N5404-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 291411N5404-E3/73 Datasheet

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RGP30G-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 5115RGP30G-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF36G-AP are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 3 A
• Package / Case: DO-201AD, Axial
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) (Max) @ If: Within acceptable range for circuit operation
• Current - Reverse Leakage @ Vr: 5 µA @ 400 V
• Operating Temperature - Junction: Minimum -50°C to maximum 175°C
• Product Status: Active

All substitute parts maintain identical voltage and current ratings, package configuration, and through-hole mounting compatibility. Variations in forward voltage drop, recovery time characteristics, and maximum junction temperature are documented to support application-specific selection.

Parameter Comparison

Engineering Selection Recommendations

SF36G-AP (Primary Part) The SF36G-AP is an Active product with ROHS3 compliance and REACH unaffected status. It provides fast recovery characteristics with 35 ns reverse recovery time and operates across -65°C to 150°C junction temperature range. This part is suitable for applications requiring fast switching performance in the specified voltage and current range.

1N5404-E3/73 (Substitute) The 1N5404-E3/73 is an Active product with ROHS3 compliance and REACH unaffected status. It features standard recovery characteristics (>500ns) and operates across -50°C to 150°C junction temperature range. Forward voltage drop is 1.2 V at 3 A, which is lower than the SF36G-AP. This part is suitable for applications where standard recovery speed is acceptable and lower forward voltage drop is beneficial for efficiency.

RGP30G-E3/54 (Substitute) The RGP30G-E3/54 is an Active product with ROHS3 compliance and REACH unaffected status, designated as part of the SUPERECTIFIER® series. It provides fast recovery characteristics with 150 ns reverse recovery time and operates across -65°C to 175°C junction temperature range, offering the widest thermal operating window. Forward voltage drop is 1.3 V at 3 A. This part is suitable for applications requiring extended temperature operation and fast recovery performance.

All three parts share identical voltage and current ratings, DO-201AD axial package configuration, and through-hole mounting compatibility. Selection between these parts depends on specific application requirements regarding recovery speed, forward voltage characteristics, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 1N5404-E3/73 be used as a direct replacement for the SF36G-AP?

A: The 1N5404-E3/73 matches the SF36G-AP in voltage rating (400 V), current rating (3 A), package type (DO-201AD axial), and mounting method (through-hole). However, the 1N5404-E3/73 features standard recovery speed (>500ns) compared to the SF36G-AP's fast recovery (≤500ns, 35 ns trr). The forward voltage drop is also lower (1.2 V vs. 1.27 V at 3 A). These differences are acceptable for applications where standard recovery speed is sufficient.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have shorter reverse recovery time (trr), typically ≤500ns, enabling faster switching transitions. Standard recovery diodes have longer reverse recovery time (>500ns). The SF36G-AP and RGP30G-E3/54 are fast recovery types, while the 1N5404-E3/73 is a standard recovery type. Fast recovery diodes are preferred in high-frequency switching applications.

Q: Are all three parts RoHS3 compliant?

A: Yes, all three parts—SF36G-AP, 1N5404-E3/73, and RGP30G-E3/54—are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: What is the operating temperature range difference between these parts?

A: The SF36G-AP operates from -65°C to 150°C junction temperature. The 1N5404-E3/73 operates from -50°C to 150°C. The RGP30G-E3/54 operates from -65°C to 175°C, providing the widest thermal range. Selection depends on application temperature requirements.

Q: Do all three parts use the same package?

A: Yes, all three parts use the DO-201AD axial through-hole package, ensuring mechanical and electrical compatibility in PCB layouts designed for this package type.

Q: What is the forward voltage drop difference, and does it matter?

A: The SF36G-AP has a forward voltage drop of 1.27 V at 3 A, the 1N5404-E3/73 has 1.2 V, and the RGP30G-E3/54 has 1.3 V. Lower forward voltage drop reduces power dissipation and heat generation. The difference of 0.1 V may be significant in high-current or thermally constrained applications.

Q: Can I use the RGP30G-E3/54 in place of the SF36G-AP for high-temperature applications?

A: Yes, the RGP30G-E3/54 supports operation up to 175°C junction temperature compared to the SF36G-AP's 150°C maximum. Both parts are fast recovery types with similar electrical characteristics, making the RGP30G-E3/54 suitable for applications requiring extended temperature operation.