SMBJ13CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ13CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for telecom applications requiring transient voltage protection. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability.

Substiute Parts

SMBJ13CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 859SMBJ13CAHM3_A/I Datasheet

Current PartRFQ

SMBJ13CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 882SMBJ13CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ13CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 13V
• Voltage - Breakdown (Min): 14.4V
• Voltage - Clamping (Max) @ Ipp: 21.5V
• Current - Peak Pulse (10/1000µs): 27.9A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The substitute part SMBJ13CAHM3_B/I maintains identical electrical specifications and mechanical compatibility while offering active product status and improved supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ13CAHM3_B/I is the manufacturer-recommended substitute for the obsolete SMBJ13CAHM3_A/I. Both components are manufactured by Vishay and maintain identical electrical and mechanical specifications. The substitute part carries active product status, ensuring continued availability and supply chain support. Both parts meet automotive-grade requirements and hold AEC-Q101 qualification, maintaining compliance for automotive and telecom applications. The substitute is supplied in Tape & Reel packaging, which is standard for production environments. Selection of the SMBJ13CAHM3_B/I eliminates obsolescence risk while preserving full functional and physical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can SMBJ13CAHM3_B/I be used as a direct replacement for SMBJ13CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The substitute maintains the same voltage ratings (13V standoff, 21.5V clamping), current handling (27.9A peak pulse), power dissipation (600W), operating temperature range (-55°C to 150°C), and DO-214AA SMB package configuration. Both hold automotive grade and AEC-Q101 qualification.

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

A: The primary difference is product status. SMBJ13CAHM3_A/I is obsolete, while SMBJ13CAHM3_B/I is active. The substitute also differs in packaging format: SMBJ13CAHM3_B/I is supplied in Tape & Reel (TR) configuration, which is standard for high-volume production.

Q: Are there any compatibility concerns when switching to the substitute part?

A: No compatibility concerns exist. The substitute maintains identical electrical specifications, mechanical dimensions, and package footprint. PCB layouts, thermal management, and circuit designs require no modification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SMBJ13CAHM3_A/I and SMBJ13CAHM3_B/I are ROHS3 compliant, REACH unaffected, and hold AEC-Q101 automotive qualification. Compliance requirements are fully satisfied by either part.

Q: Why should I transition to the substitute part?

A: The substitute part is active and maintains full supply availability. Using an active part eliminates obsolescence risk, ensures long-term component sourcing, and provides access to manufacturer support and technical documentation.