AR1FM-M3/I Equivalent & Substitute Parts

Part Overview

The AR1FM-M3/I is an avalanche diode rated for 1000 V DC reverse voltage with 1 A average rectified current, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount rectifier diode in DO-219AB package is designed for fast recovery applications with a reverse recovery time of 120 ns. The part is classified as Active product status with automotive grade qualification to AEC-Q101 standard.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same package type and thermal operating range. Alternative packaging formats and supplier configurations of the same diode technology enable component sourcing flexibility while preserving circuit functionality.

Substiute Parts

AR1FM-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 792AR1FM-M3/I Datasheet

Current PartRFQ

AR1FM-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 18860AR1FM-M3/H Datasheet

Parametric EquivalentRFQ

AR1FMHM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 18928AR1FMHM3/H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AR1FM-M3/I is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.6 V @ 1 A
• Reverse Recovery Time (trr): 120 ns
• Current - Reverse Leakage @ Vr: 1 µA @ 1000 V
• Capacitance @ Vr, F: 9.3 pF @ 4V, 1MHz

Mechanical Equivalence Criteria:

• Package / Case: DO-219AB (SMF)
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 175°C

Compliance Equivalence Criteria:

• Technology: Avalanche
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The identified substitute parts AR1FM-M3/H and AR1FMHM3/H maintain identical electrical performance and thermal operating range. Differences exist only in packaging format (Cut Tape versus Tape & Reel) and moisture sensitivity level designation, which do not affect circuit-level functionality or performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three diode part numbers maintain Active product status with identical electrical specifications and automotive-grade qualification to AEC-Q101 standard. Selection between AR1FM-M3/I, AR1FM-M3/H, and AR1FMHM3/H is determined by packaging and supply chain requirements rather than circuit performance.

AR1FM-M3/I is supplied in Tape & Reel (TR) format with 758 pieces in current inventory.

AR1FM-M3/H is supplied in Cut Tape (CT) format with 18,848 pieces in current inventory and specified Moisture Sensitivity Level 1 (Unlimited).

AR1FMHM3/H is supplied in Tape & Reel (TR) format with 18,899 pieces in current inventory and specified Moisture Sensitivity Level 1 (Unlimited).

All parts comply with ROHS3 and REACH requirements. Selection among these equivalents is based on packaging preference, inventory availability, and moisture sensitivity level requirements for storage and handling conditions.

Frequently Asked Questions (FAQ)

Q: Can AR1FM-M3/H replace AR1FM-M3/I in a circuit design?

A: Yes. Both parts are electrically identical with 1000 V reverse voltage rating, 1 A average rectified current, 120 ns reverse recovery time, and identical forward voltage characteristics. The difference is packaging format: AR1FM-M3/I is supplied in Tape & Reel while AR1FM-M3/H is supplied in Cut Tape. Both are surface mount DO-219AB package with identical footprints.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, suitable for lower-volume or mixed-component orders. Electrical and mechanical specifications are identical.

Q: Are all three parts automotive qualified?

A: Yes. AR1FM-M3/I, AR1FM-M3/H, and AR1FMHM3/H are all automotive grade with AEC-Q101 qualification. All comply with ROHS3 and REACH requirements.

Q: What does Moisture Sensitivity Level 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the component can be stored indefinitely without moisture control requirements. AR1FM-M3/H and AR1FMHM3/H both specify MSL 1 (Unlimited). AR1FM-M3/I does not specify MSL in the provided data.

Q: Can I use AR1FMHM3/H as a direct substitute for AR1FM-M3/I?

A: Yes. AR1FMHM3/H maintains identical electrical performance and thermal operating range (-55°C to 175°C). Both are supplied in Tape & Reel format. The only difference is inventory source and specified Moisture Sensitivity Level 1 (Unlimited) for AR1FMHM3/H.

Q: Do these diodes have the same reverse recovery time?

A: Yes. All three parts have reverse recovery time (trr) of 120 ns, classified as Fast Recovery with speed specification ≤ 500 ns for currents > 200 mA.

Q: Are the forward voltage characteristics identical across all three parts?

A: Yes. All three parts specify maximum forward voltage of 1.6 V at 1 A forward current.