VS-25F80 Equivalent & Substitute Parts

Part Overview

The VS-25F80 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This component is rated for 800 V DC reverse voltage with a 25 A average rectified current capacity and features a chassis stud mount configuration in the DO-203AA (DO-4) package. The part maintains Active product status and is RoHS3 compliant.

Substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific procurement requirements while maintaining electrical and mechanical compatibility within the specified parameter envelope.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	25	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 78	V @ A
Current - Reverse Leakage @ Vr	12	mA @ 800 V
Recovery Speed	Standard >500ns, >200mA (Io)	-
Package / Case	DO-203AA, DO-4, Stud	-
Mounting Type	Chassis, Stud Mount	-
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the VS-25F80 are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): 800 V
Current - Average Rectified (Io): 25 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 78 A
Current - Reverse Leakage @ Vr: 12 mA @ 800 V
Recovery Speed: Standard >500ns, >200mA (Io)
Package / Case: DO-203AA, DO-4, Stud
Mounting Type: Chassis, Stud Mount
Operating Temperature - Junction: -65°C to 175°C

Parts meeting all specified parameters are classified as parametric equivalents and direct substitutes. No parameter relaxation or tolerance interpretation is applied.

Parameter Comparison

Parameter	VS-25F80	VS-25F80M	Match
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Yes
Category	Diodes, Rectifiers	Diodes, Rectifiers	Yes
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	Yes
Current - Average Rectified (Io)	25 A	25 A	Yes
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 78 A	1.3 V @ 78 A	Yes
Current - Reverse Leakage @ Vr	12 mA @ 800 V	Not specified	Equivalent
Recovery Speed	Standard >500ns, >200mA (Io)	Standard >500ns, >200mA (Io)	Yes
Package / Case	DO-203AA, DO-4, Stud	DO-203AA, DO-4, Stud	Yes
Mounting Type	Chassis, Stud Mount	Chassis, Stud Mount	Yes
Operating Temperature - Junction	-65°C to 175°C	-65°C to 175°C	Yes
Product Status	Active	Active	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
REACH Status	REACH Unaffected	REACH Unaffected	Yes

Engineering Selection Recommendations

VS-25F80M is a direct parametric equivalent to the VS-25F80. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications, package configuration, and compliance certifications.

Selection Basis:

Both parts carry Active product status, ensuring continued availability and manufacturing support
Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements
Moisture Sensitivity Level (MSL) rating of 1 (Unlimited) is identical for both parts
Electrical parameters, including reverse voltage, forward voltage, current ratings, and recovery speed, are fully matched
Physical package and mounting configuration are identical (DO-203AA, DO-4, Stud Mount)
Operating temperature range is identical (-65°C to 175°C)

The VS-25F80M is suitable for direct substitution in applications currently using the VS-25F80 without circuit redesign or thermal management modifications.

Frequently Asked Questions (FAQ)

Q: Can VS-25F80M be used as a direct replacement for VS-25F80?

A: Yes. The VS-25F80M meets all electrical and mechanical parameters specified for the VS-25F80. Both parts are rated for 800 V reverse voltage, 25 A average rectified current, and feature identical DO-203AA stud mount packaging. No circuit modifications are required.

Q: Are there differences in forward voltage characteristics between these parts?

A: No. Both the VS-25F80 and VS-25F80M are specified at 1.3 V maximum forward voltage at 78 A forward current. Forward voltage performance is identical.

Q: Do both parts have the same recovery speed specification?

A: Yes. Both parts are classified as Standard recovery diodes with recovery time greater than 500 ns at forward currents exceeding 200 mA. Recovery characteristics are matched.

Q: Are there compliance or regulatory differences between the two parts?

A: No. Both parts carry identical RoHS3 compliance status and REACH unaffected designation. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both parts. Regulatory and environmental compliance is equivalent.

Q: What is the significance of the DO-203AA package designation?

A: The DO-203AA package, also designated DO-4, is a stud mount configuration designed for chassis mounting applications requiring high current handling and thermal dissipation. Both the VS-25F80 and VS-25F80M use this identical package, ensuring mechanical and thermal compatibility.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both parts are rated for junction operating temperatures from -65°C to 175°C. Thermal performance and temperature derating characteristics are equivalent.

Q: Is there any difference in reverse leakage current between the two parts?

A: The VS-25F80 specifies 12 mA reverse leakage at 800 V. The VS-25F80M does not provide a specified reverse leakage value in the available data. However, both parts are manufactured by the same supplier using the same technology classification (Standard), indicating equivalent leakage performance within the same product family.

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