SMBJ54CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ54CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 54V reverse standoff voltage with an 87.1V maximum clamping voltage and 6.9A peak pulse current rating. It is designed for telecom applications requiring transient overvoltage protection in automotive-grade environments.

The SMBJ54CAHM3_A/I carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.

Substiute Parts

SMBJ54CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1209SMBJ54CAHM3_A/I Datasheet

Current PartRFQ

SMBJ54CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 872SMBJ54CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ54CAHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff: 54V (±5% tolerance)
• Voltage - Clamping: 87.1V maximum @ Ipp
• Current - Peak Pulse: 6.9A (10/1000µs waveform)
• Power - Peak Pulse: 600W
• Package: DO-214AA (SMB) surface mount
• Bidirectional configuration: 1 channel
• Operating temperature range: -55°C to 150°C
• Automotive grade with AEC-Q101 qualification
• RoHS3 compliance

The SMBJ54CAHM3_B/I is classified as a manufacturer-recommended substitute. It maintains identical electrical specifications and package configuration while differing only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ54CAHM3_B/I is the direct substitute for the obsolete SMBJ54CAHM3_A/I. Both components are manufactured by Vishay and maintain identical electrical performance specifications, thermal operating range, and automotive-grade certifications including AEC-Q101 qualification.

The primary distinction is product lifecycle status: the SMBJ54CAHM3_A/I is obsolete, while the SMBJ54CAHM3_B/I maintains active production status. This ensures long-term supply chain availability and continued manufacturer support for new designs and production runs.

Both parts satisfy ROHS3 compliance and REACH regulatory requirements. The packaging format difference (standard vs. Tape & Reel) does not affect electrical or mechanical compatibility and is determined by procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ54CAHM3_B/I be used as a direct replacement for the SMBJ54CAHM3_A/I?

A: Yes. The SMBJ54CAHM3_B/I is electrically and mechanically identical to the SMBJ54CAHM3_A/I. Both components share the same voltage ratings (54V standoff, 87.1V clamping), current specifications (6.9A peak pulse), power rating (600W), package format (DO-214AA SMB), and automotive qualifications (AEC-Q101).

Q: What is the difference between the SMBJ54CAHM3_A/I and SMBJ54CAHM3_B/I?

A: The primary differences are product status and packaging format. The SMBJ54CAHM3_A/I is obsolete, while the SMBJ54CAHM3_B/I is active production. The SMBJ54CAHM3_B/I is supplied in Tape & Reel packaging, whereas the SMBJ54CAHM3_A/I uses standard packaging. Electrical specifications and performance are identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the SMBJ54CAHM3_A/I and SMBJ54CAHM3_B/I are automotive-grade components qualified to AEC-Q101 standards. They are rated for operating temperatures from -55°C to 150°C and are suitable for telecom protection applications in automotive environments.

Q: Does the Tape & Reel packaging of the SMBJ54CAHM3_B/I affect compatibility?

A: No. Tape & Reel packaging is a supply and assembly format consideration only. The component itself, its electrical characteristics, and its DO-214AA (SMB) package footprint remain unchanged. Tape & Reel packaging is standard for high-volume surface mount assembly processes.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both components maintain identical RoHS3 compliance and REACH unaffected status. Regulatory and environmental compliance requirements are met by both the SMBJ54CAHM3_A/I and SMBJ54CAHM3_B/I.