P6SMB20AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB20AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient voltage protection. This component features a 17.1V reverse standoff voltage with 27.7V maximum clamping voltage and 21.7A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

P6SMB20AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1199P6SMB20AHM3_A/I Datasheet

Current PartRFQ

P6SMB20AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 766P6SMB20AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB20AHM3_A/I is determined by strict equivalence across the following critical parameters:

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

The P6SMB20AHM3_B/I is identified as the manufacturer-recommended substitute, maintaining identical electrical specifications and automotive qualification while differing only in product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard).

Parameter Comparison

Engineering Selection Recommendations

The P6SMB20AHM3_B/I is the direct equivalent for the obsolete P6SMB20AHM3_A/I. Both parts maintain identical electrical performance specifications, automotive-grade qualification, and AEC-Q101 certification. The substitute part is currently in active production status, ensuring long-term supply chain availability. Both components comply with ROHS3 and REACH requirements. Selection of the P6SMB20AHM3_B/I eliminates obsolescence risk while preserving all functional and compliance characteristics required for telecom transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Are the P6SMB20AHM3_A/I and P6SMB20AHM3_B/I electrically identical?

A: Yes. Both parts share identical voltage ratings (17.1V reverse standoff, 27.7V clamping), current specifications (21.7A peak pulse), power dissipation (600W), and operating temperature range (-65°C ~ 150°C). They are functionally equivalent for circuit design purposes.

Q: What is the primary difference between these two part numbers?

A: The P6SMB20AHM3_A/I is classified as obsolete, while the P6SMB20AHM3_B/I is active production. The substitute also differs in packaging format (Tape & Reel vs. standard packaging).

Q: Can I use P6SMB20AHM3_B/I as a direct replacement in existing designs?

A: Yes. The substitute maintains the same DO-214AA (SMB) surface mount package, automotive grade, and AEC-Q101 qualification. No circuit modifications are required.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the main part and substitute are automotive-grade components with AEC-Q101 qualification, meeting automotive reliability and quality standards.

Q: Do both parts comply with environmental regulations?

A: Yes. Both P6SMB20AHM3_A/I and P6SMB20AHM3_B/I are ROHS3 compliant and REACH unaffected.