SF54G-AP Equivalent & Substitute Parts

Part Overview

The SF54G-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 5 A average rectified current. The device features fast recovery characteristics with a reverse recovery time of 35 ns and is housed in a DO-201AD axial through-hole package. This diode is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific requirements within the specified parameter ranges.

Substiute Parts

SF54G-AP

Micro Commercial CoIn Stock: 879SF54G-AP Datasheet

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P300D-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 6644P300D-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF54G-AP are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): Must equal 200 V
• Package / Case: Must be DO-201AD, Axial through-hole configuration
• Mounting Type: Must be Through Hole
• RoHS Status: Must maintain ROHS3 compliance
• Current - Reverse Leakage @ Vr: Must equal 5 µA @ 200 V

Allowable Variation Parameters:

• Current - Average Rectified (Io): May be lower than 5 A if application requirements permit
• Voltage - Forward (Vf): May vary within acceptable circuit design margins
• Reverse Recovery Time (trr): May be longer than 35 ns for standard recovery applications
• Operating Temperature - Junction: May have narrower range if application operates within specified limits

The P300D-E3/54 meets the critical matching parameters and is therefore classified as a valid substitute, with the understanding that its 3 A current rating represents a reduced capacity compared to the 5 A primary specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SF54G-AP): The SF54G-AP is the specified component for applications requiring 5 A average rectified current capacity with fast recovery characteristics (35 ns). This part maintains Active product status with full RoHS3 compliance and is available in high inventory quantities (801 pcs). The operating temperature range of -65°C to 150°C accommodates extended environmental specifications.

Substitute Part Selection (P300D-E3/54): The P300D-E3/54 is suitable for applications where the 5 A current requirement can be reduced to 3 A without circuit performance degradation. This substitute maintains identical reverse voltage rating (200 V), identical reverse leakage characteristics (5 µA @ 200 V), and identical package configuration (DO-201AD axial through-hole). Both parts are Active status and ROHS3 compliant. The P300D-E3/54 exhibits standard recovery characteristics (2 µs) compared to the fast recovery of the primary part. The operating temperature range is narrower (-50°C to 150°C), which may restrict use in applications requiring sub-zero operation below -50°C.

Selection between these parts depends on circuit current requirements and recovery speed specifications. The substitute part is appropriate only when application load current does not exceed 3 A and standard recovery performance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the P300D-E3/54 be used as a direct replacement for the SF54G-AP in all applications?

A: No. The P300D-E3/54 has a maximum average rectified current rating of 3 A compared to the SF54G-AP's 5 A rating. Direct substitution is only valid for applications where the actual circuit current does not exceed 3 A. Operating the P300D-E3/54 above its 3 A rating will result in device failure.

Q: What is the difference in recovery speed between these two diodes?

A: The SF54G-AP features fast recovery with a reverse recovery time of 35 ns, while the P300D-E3/54 has standard recovery with a reverse recovery time of 2 µs (2000 ns). Fast recovery diodes are required for high-frequency switching applications. Standard recovery diodes are suitable for lower-frequency rectification circuits.

Q: Are both parts physically identical?

A: Yes. Both the SF54G-AP and P300D-E3/54 use the DO-201AD axial through-hole package. They are mechanically interchangeable in terms of PCB mounting and physical dimensions.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SF54G-AP and P300D-E3/54 are RoHS3 compliant and REACH unaffected. Both carry the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the temperature operating range difference?

A: The SF54G-AP operates from -65°C to 150°C, while the P300D-E3/54 operates from -50°C to 150°C. The SF54G-AP supports a wider low-temperature range. Applications requiring operation below -50°C must use the SF54G-AP.

Q: How do the forward voltage characteristics compare?

A: The SF54G-AP has a maximum forward voltage of 950 mV at 5 A, while the P300D-E3/54 has a maximum forward voltage of 1.2 V at 3 A. Forward voltage differences affect power dissipation and heat generation in the circuit. The SF54G-AP exhibits lower forward voltage drop at its rated current.

Q: Can I use the SF54G-AP in place of the P300D-E3/54?

A: Yes. The SF54G-AP can be used as a substitute for the P300D-E3/54 in any application. The SF54G-AP provides superior specifications including higher current capacity (5 A vs 3 A), faster recovery time (35 ns vs 2 µs), lower forward voltage drop, and wider operating temperature range (-65°C to 150°C vs -50°C to 150°C).