SMBJ54AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ54AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for telecom applications requiring transient voltage protection. The part is currently classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and design continuity.

Substiute Parts

SMBJ54AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 809SMBJ54AHM3_A/I Datasheet

Current PartRFQ

SMBJ54AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 973SMBJ54AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ54AHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 54V
• Voltage - Breakdown (Min): 60V
• Voltage - Clamping (Max) @ Ipp: 87.1V
• Current - Peak Pulse (10/1000µs): 6.9A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMBJ54AHM3_B/I maintains identical electrical specifications and mechanical compatibility, differing only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ54AHM3_B/I is the direct equivalent for the obsolete SMBJ54AHM3_A/I. Both parts maintain identical electrical performance and mechanical compatibility within the DO-214AA (SMB) package. The SMBJ54AHM3_B/I carries Active product status, ensuring continued availability and supply chain support. Both parts satisfy automotive-grade requirements with AEC-Q101 qualification and maintain full RoHS3 and REACH compliance. The only distinction is packaging format: the substitute is supplied in Tape & Reel configuration, which is standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can SMBJ54AHM3_B/I be used as a direct replacement for SMBJ54AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical, with matching voltage ratings (54V standoff, 60V breakdown minimum, 87.1V clamping maximum), current ratings (6.9A peak pulse), and power dissipation (600W). Both use the DO-214AA (SMB) surface mount package and operate across the same temperature range (-55°C to 150°C).

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

A: The primary difference is product status and packaging format. SMBJ54AHM3_A/I is obsolete, while SMBJ54AHM3_B/I is active. The substitute is supplied in Tape & Reel (TR) packaging, which is standard for automated assembly processes.

Q: Are both parts qualified for automotive applications?

A: Yes. Both SMBJ54AHM3_A/I and SMBJ54AHM3_B/I carry automotive grade classification and hold AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: Do these parts have the same compliance certifications?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory compliance across all markets.

Q: Is the DO-214AA (SMB) package compatible with existing PCB designs?

A: Yes. Both parts use identical DO-214AA (SMB) surface mount packaging, ensuring footprint and assembly compatibility with existing designs without PCB modifications.