Equivalent & Substitute Parts for FR12G05

Part Overview

The GeneSiC Semiconductor FR12G05 is a general-purpose fast recovery rectifier diode specified for 400 V reverse voltage and 12 A average rectified current, in a chassis, stud mount DO-4 (DO-203AA) package. The product is currently listed as active. Identifying equivalent and substitute rectifier diodes is essential to maintain design flexibility, ensure supply chain continuity, and allow for component cross-referencing in the event of allocation, obsolescence, or inventory constraints.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Operating Temperature - Junction	RoHS Status	Moisture Sensitivity Level (MSL)
FR12G05	GeneSiC Semiconductor	Diodes, Rectifiers	400 V	12A	800 mV @ 12 A	500 ns	25 µA @ 100 V	Chassis, Stud Mount	DO-203AA, DO-4, Stud	-65°C ~ 150°C	RoHS Compliant	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are grouped strictly according to adherence to the following key electrical and mechanical parameters: reverse voltage (Vr) rating, average rectified current (Io), forward voltage (Vf) at specified current, reverse recovery time (trr), reverse leakage current at given reverse voltage, mounting type, package/case, operating temperature range, RoHS compliance, and Moisture Sensitivity Level (MSL). Only parts matching or exceeding these parameters are listed as substitutes.

Parameter Comparison

Parameter	FR12G05	VS-1N3893
Manufacturer	GeneSiC Semiconductor	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	400 V	400 V
Current - Average Rectified (Io)	12A	12A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 12 A	1.4 V @ 12 A
Reverse Recovery Time (trr)	500 ns	300 ns
Current - Reverse Leakage @ Vr	25 µA @ 100 V	25 µA @ 400 V
Mounting Type	Chassis, Stud Mount	Chassis, Stud Mount
Package / Case	DO-203AA, DO-4, Stud	DO-203AA, DO-4, Stud
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both FR12G05 and substitute part VS-1N3893 are listed as active and are RoHS compliant with an MSL rating of 1 (Unlimited). There are no restrictions based on product status, RoHS compliance, or moisture sensitivity level for substitution between these diodes.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria when selecting a substitute for FR12G05 in the category of diodes, rectifiers?
A1: The primary criteria are voltage rating, current rating, forward voltage drop at rated current, reverse recovery time, reverse leakage current, mounting style, package/case, operating temperature range, and compliance specifications.

Q2: Is the package type and mounting compatible between FR12G05 and VS-1N3893?
A2: Both FR12G05 and VS-1N3893 use the DO-203AA (DO-4), chassis, stud mount package, ensuring mechanical compatibility.

Q3: Are there differences in RoHS or MSL compliance between FR12G05 and VS-1N3893?
A3: Both parts are RoHS compliant and have an MSL rating of 1 (Unlimited), indicating equivalency in environmental and moisture sensitivity compliance.

Q4: Is there a difference in the speed (reverse recovery time) or reverse leakage current between the parts?
A4: The VS-1N3893 has a shorter reverse recovery time and the same maximum reverse leakage current value as the FR12G05, based on the specified test conditions.

Q5: Can these substitutes be used interchangeably in the same circuit layout for this product category?
A5: Both parts share identical package and mounting specifications, supporting direct interchangeability from a mechanical perspective.

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