SMBJ22CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ22CAHM3_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 22V reverse standoff voltage. The part is currently listed as obsolete, making identification of active equivalent components essential for ongoing design support and procurement.

Substiute Parts

SMBJ22CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1137SMBJ22CAHM3_A/I Datasheet

Current PartRFQ

SMBJ22CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1036SMBJ22CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ22CAHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): 16.9A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The primary substitute identified is SMBJ22CAHM3_B/I, which maintains identical electrical specifications and automotive qualifications while differing only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ22CAHM3_B/I is the direct substitute for SMBJ22CAHM3_A/I. Both components are manufactured by Vishay and maintain identical electrical performance specifications, automotive grade classification, and AEC-Q101 qualification. The primary distinction is product status: SMBJ22CAHM3_A/I is obsolete while SMBJ22CAHM3_B/I is active. For new designs and ongoing procurement, SMBJ22CAHM3_B/I is the appropriate selection. The difference in packaging format (Tape & Reel for the substitute) does not affect electrical or mechanical compatibility in the DO-214AA (SMB) footprint.

Frequently Asked Questions (FAQ)

Q: Can SMBJ22CAHM3_B/I be used as a direct replacement for SMBJ22CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The substitute maintains the same 22V reverse standoff voltage, 35.5V clamping voltage, 16.9A peak pulse current, and 600W power rating. Both are qualified to AEC-Q101 automotive standards.

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

A: The primary difference is product status. SMBJ22CAHM3_A/I is obsolete, while SMBJ22CAHM3_B/I is active. Additionally, SMBJ22CAHM3_B/I is supplied in Tape & Reel packaging, whereas SMBJ22CAHM3_A/I may have different packaging. Both use the DO-214AA (SMB) surface mount package.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and AEC-Q101 automotive qualification. Operating temperature ranges and moisture sensitivity levels are equivalent.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both components use the identical DO-214AA (SMB) footprint and mounting type (Surface Mount). No PCB layout modifications are required for substitution.

Q: Why should I transition from SMBJ22CAHM3_A/I to SMBJ22CAHM3_B/I?

A: The original part is obsolete, making long-term procurement difficult. SMBJ22CAHM3_B/I is an active product with equivalent specifications and is the recommended choice for new designs and ongoing production.