AS1FD-M3/I Equivalent & Substitute Parts Reference

Part Overview

The Vishay AS1FD-M3/I is an active automotive-grade avalanche diode rectifier. It features a 200 V maximum DC reverse voltage and 1.5 A average rectified current in a DO-219AB (SMF) surface-mount package. This device is RoHS3 compliant and REACH unaffected. Finding alternative models is essential for maintaining manufacturing continuity in situations such as inventory shortages, supply chain disruptions, or to meet packaging requirements, provided electrical and mechanical parameters remain identical.

Substiute Parts

AS1FD-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1017AS1FD-M3/I Datasheet

Current PartRFQ

AS1FD-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 17799AS1FD-M3/H Datasheet

Parametric EquivalentRFQ

AS1FDHM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 9903AS1FDHM3/H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Parametric equivalence in the Diodes, Rectifiers category for AS1FD-M3/I is established by matching all critical electrical and mechanical properties. The substitute parts listed meet the following exact criteria:

• Manufacturer: Vishay General Semiconductor - Diodes Division
• Technology: Avalanche structure
• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 1.5 A
• Voltage - Forward (Vf) (Max) @ If: 1.15 V @ 1.5 A
• Speed: Standard Recovery >500ns, >200mA (Io)
• Reverse Recovery Time (trr): 1.3 µs
• Current - Reverse Leakage @ Vr: 5 µA @ 200 V
• Capacitance @ Vr, F: 8.8 pF @ 4V, 1 MHz
• Grade: Automotive; Qualification: AEC-Q101
• Mounting Type: Surface Mount
• Package / Case: DO-219AB (SMF)
• Operating Temperature: -55°C ~ 175°C
• RoHS/REACH/ECCN/HTSUS compliance and Product Status: Active

Substitution is appropriate only when all these parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

AS1FD-M3/I, AS1FD-M3/H, and AS1FDHM3/H are all active products, automotive qualified to AEC-Q101, and RoHS3/REACH compliant. Selection between these parametric equivalents is determined by inventory, packaging type, and compliance requirements, as all critical electrical and regulatory specifications are identical.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting AS1FD-M3/I in rectifier designs?
A1: Primary criteria include identical values for DC reverse voltage, average rectified current, forward voltage drop, reverse recovery time, reverse leakage current, capacitance, package type (DO-219AB), temperature rating, automotive qualification (AEC-Q101), and compliance certifications (RoHS3, REACH).

Q2: Are AS1FD-M3/I, AS1FD-M3/H, and AS1FDHM3/H mutually interchangeable?
A2: Yes, based on the listed parameters, these parts are mutually interchangeable with respect to electrical performance, mechanical fit, and regulatory status.

Q3: Does packaging type affect substitution?
A3: Electrical and mechanical characteristics are unaffected by packaging (Tape & Reel vs. Cut Tape), but packaging impacts feeding methods in automated assembly processes.

Q4: Is component marking or traceability different among the equivalents?
A4: All parts listed specify the same compliance, grade, and qualification, indicating no difference in automotive traceability requirements among them.

Q5: Are there any compliance or country-of-origin considerations in these equivalents?
A5: All the parts share the same RoHS status, REACH status, ECCN category, and HTSUS code as provided. No additional considerations are noted among these equivalents.