SF38G-AP Equivalent & Substitute Parts

Part Overview

The SF38G-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600V DC reverse voltage and 3A 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 compatibility to ensure functional interchangeability in circuit applications where the SF38G-AP is specified.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.75 V @ 3 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SF38G-AP are identified based on the following critical parameters that determine functional interchangeability:

Electrical Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-201AD, Axial
Mounting Type: Through Hole
Current - Reverse Leakage @ Vr: 5 µA @ 600 V

Compliance Criteria:

RoHS3 Compliant status
Active product status

The substitute part GP30J-E3/73 manufactured by Vishay General Semiconductor - Diodes Division meets all critical electrical and mechanical parameters required for direct substitution. Both parts share identical voltage and current ratings, package configuration, and regulatory compliance status, enabling functional equivalence in circuit applications.

Parameter Comparison

Parameter	SF38G-AP (Micro Commercial Co)	GP30J-E3/73 (Vishay)	Match Status
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	Match
Current - Average Rectified (Io)	3 A	3 A	Match
Voltage - Forward (Vf) (Max) @ If	1.75 V @ 3 A	1.1 V @ 3 A	Substitute Lower
Reverse Recovery Time (trr)	35 ns	5 µs	Substitute Slower
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	Match
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Match
Mounting Type	Through Hole	Through Hole	Match
Operating Temperature - Junction	-65 to 150 °C	-65 to 175 °C	Substitute Extended
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match

Engineering Selection Recommendations

SF38G-AP (Micro Commercial Co):

Primary selection for applications requiring the specified fast recovery characteristic (35 ns trr)
Active product status with established supply chain
RoHS3 compliant for regulated applications
Forward voltage specification of 1.75 V @ 3 A

GP30J-E3/73 (Vishay General Semiconductor - Diodes Division):

Direct electrical and mechanical substitute with identical voltage and current ratings
Lower forward voltage (1.1 V @ 3 A) reduces power dissipation in rectification circuits
Extended operating temperature range (-65 to 175 °C) accommodates higher thermal environments
Active product status with RoHS3 compliance
Standard recovery speed (5 µs trr) suitable for general-purpose rectification applications
Higher inventory availability (3021 Pcs) compared to SF38G-AP (611 Pcs)

Both parts are suitable for direct substitution in DO-201AD through-hole rectifier applications where 600V/3A specifications are required. Selection between the two depends on specific circuit requirements regarding forward voltage drop, recovery speed, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can GP30J-E3/73 be used as a direct replacement for SF38G-AP?

A: Yes. Both parts share identical voltage ratings (600 V), current ratings (3 A), package configuration (DO-201AD, Axial), and mounting type (Through Hole). Both are RoHS3 compliant and Active product status. The parts are electrically and mechanically interchangeable for general-purpose rectification applications.

Q: What are the differences between SF38G-AP and GP30J-E3/73?

A: The primary differences are: (1) Forward voltage: SF38G-AP is 1.75 V @ 3 A versus GP30J-E3/73 at 1.1 V @ 3 A; (2) Reverse recovery time: SF38G-AP is 35 ns (fast recovery) versus GP30J-E3/73 at 5 µs (standard recovery); (3) Operating temperature range: SF38G-AP is -65 to 150 °C versus GP30J-E3/73 at -65 to 175 °C.

Q: Does the lower forward voltage of GP30J-E3/73 affect circuit performance?

A: The lower forward voltage (1.1 V versus 1.75 V) results in reduced power dissipation during rectification. This is generally beneficial for thermal management and efficiency. Circuit performance remains functionally equivalent for applications where the SF38G-AP was originally specified.

Q: Are both parts suitable for high-temperature applications?

A: GP30J-E3/73 supports operation to 175 °C junction temperature, while SF38G-AP is rated to 150 °C. For applications requiring extended temperature operation above 150 °C, GP30J-E3/73 is the appropriate selection.

Q: What is the significance of the different recovery speeds?

A: SF38G-AP features fast recovery (35 ns trr), while GP30J-E3/73 has standard recovery (5 µs trr). Fast recovery diodes are typically used in high-frequency switching applications. For standard rectification applications, both recovery speeds are functionally acceptable.

Q: Are both parts RoHS3 compliant?

A: Yes. Both SF38G-AP and GP30J-E3/73 are RoHS3 compliant and REACH unaffected, meeting regulatory requirements for restricted substance compliance.

Q: What packaging formats are available for these parts?

A: SF38G-AP is supplied in Tape & Box (TB) packaging. GP30J-E3/73 is supplied in Cut Tape (CT) packaging. Both use the same DO-201AD axial through-hole package configuration for circuit board mounting.

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