P6SMB20CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB20CAHM3_A/I is a 600W bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 17.1V reverse standoff voltage range with a 27.7V maximum clamping voltage, designed for telecom applications requiring transient protection. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

P6SMB20CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 958P6SMB20CAHM3_A/I Datasheet

Current PartRFQ

P6SMB20CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 965P6SMB20CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB20CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 17.1V
• Voltage - Breakdown (Min): 19V
• Voltage - Clamping (Max) @ Ipp: 27.7V
• Current - Peak Pulse (10/1000µs): 21.7A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The P6SMB20CAHM3_B/I is identified as the manufacturer-recommended substitute. This part maintains identical electrical performance specifications and mechanical compatibility while offering active product status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB20CAHM3_B/I is the direct equivalent for the obsolete P6SMB20CAHM3_A/I. Both parts are manufactured by Vishay within the P6SMB TransZorb® series and maintain identical electrical specifications and mechanical form factors. The substitute part carries active product status, ensuring availability for procurement and future design support. Both parts maintain automotive-grade qualification with AEC-Q101 certification and ROHS3 compliance, meeting regulatory and quality requirements for automotive and telecom applications. The P6SMB20CAHM3_B/I is supplied in Tape & Reel packaging, standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB20CAHM3_B/I be used as a direct replacement for the P6SMB20CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The P6SMB20CAHM3_B/I maintains the same voltage ratings (17.1V reverse standoff, 27.7V clamping), current handling (21.7A peak pulse), power dissipation (600W), operating temperature range (-65°C to 150°C), and DO-214AA SMB package configuration. The primary difference is product status: the substitute is active while the original is obsolete.

Q: What are the critical parameters that define substitution eligibility for this TVS diode?

A: Substitution is determined by exact equivalence in: reverse standoff voltage (17.1V), breakdown voltage minimum (19V), maximum clamping voltage (27.7V), peak pulse current (21.7A), peak pulse power (600W), package type (DO-214AA SMB), bidirectional channel configuration (1), operating temperature range (-65°C to 150°C), and automotive qualification (AEC-Q101).

Q: Are there packaging differences between the main part and substitute?

A: The P6SMB20CAHM3_A/I packaging specification is not provided. The P6SMB20CAHM3_B/I is supplied in Tape & Reel (TR) format, which is standard for surface mount component production. Both parts use the same DO-214AA SMB mechanical package for PCB mounting.

Q: Do both parts meet automotive and compliance requirements?

A: Yes. Both the P6SMB20CAHM3_A/I and P6SMB20CAHM3_B/I are automotive-grade components with AEC-Q101 qualification. Both are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for automotive and telecom applications.

Q: Why is the original part listed as obsolete?

A: The P6SMB20CAHM3_A/I is marked as obsolete, indicating it is no longer in active production. The P6SMB20CAHM3_B/I, as the active equivalent, should be used for new designs and ongoing production to ensure supply chain continuity and manufacturer support.