SMBJ43CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ43CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This surface mount component operates in the DO-214AA (SMB) package and provides 600W peak pulse power protection with a 43V reverse standoff voltage. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for new designs and production runs.

Substiute Parts

SMBJ43CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1109SMBJ43CAHM3_A/I Datasheet

Current PartRFQ

SMBJ43CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 932SMBJ43CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ43CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 43V
• Voltage - Breakdown (Min): 47.8V
• Voltage - Clamping (Max) @ Ipp: 69.4V
• Current - Peak Pulse (10/1000µs): 8.6A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -55°C to 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ43CAHM3_B/I is classified as a manufacturer-recommended substitute because it maintains identical electrical specifications and mechanical compatibility while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ43CAHM3_B/I is the direct equivalent for the obsolete SMBJ43CAHM3_A/I. Both components are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical and mechanical specifications. The substitute part carries active product status, ensuring continued availability and manufacturing support. Both parts meet automotive-grade requirements with AEC-Q101 qualification and comply with ROHS3 and REACH regulations. The primary distinction is packaging format: the main part is supplied in bulk, while the substitute is available in Tape & Reel (TR) configuration, which is standard for automated assembly processes. No electrical or thermal performance differences exist between these variants.

Frequently Asked Questions (FAQ)

Q: Can SMBJ43CAHM3_B/I be used as a direct replacement for SMBJ43CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical, with the substitute offering active product status and improved supply chain availability.

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

A: Bulk packaging is suitable for manual assembly or small-volume applications. Tape & Reel (TR) packaging is optimized for automated pick-and-place assembly processes and is the standard format for production environments.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both components operate identically across all specified parameters, including voltage ratings, current handling, power dissipation, and temperature range.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the SMBJ43CAHM3_A/I and SMBJ43CAHM3_B/I are automotive-grade components with AEC-Q101 qualification.

Q: Why is the main part listed as obsolete?

A: Obsolescence typically reflects manufacturing discontinuation or transition to newer product variants. The SMBJ43CAHM3_B/I represents the active equivalent and is the recommended source for new procurement.

Q: Are compliance certifications identical between both parts?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.