SMBJ15AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ15AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component features a 15V reverse standoff voltage with a 24.4V maximum clamping voltage and 600W peak pulse power rating in a surface mount DO-214AA (SMB) package. The part is currently listed as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

SMBJ15AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1072SMBJ15AHM3_A/I Datasheet

Current PartRFQ

SMBJ15AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1120SMBJ15AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ15AHM3_A/I is determined by strict equivalence across the following critical parameters:

Voltage specifications: Reverse standoff voltage of 15V (typical), breakdown voltage minimum of 16.7V, and maximum clamping voltage of 24.4V at peak pulse current must remain identical.

Current and power ratings: Peak pulse current of 24.6A (10/1000µs) and peak pulse power of 600W must be maintained.

Package and mounting: DO-214AA (SMB) surface mount package is required for PCB compatibility.

Electrical characteristics: Unidirectional zener TVS diode topology with single channel configuration.

Compliance and certification: Automotive grade with AEC-Q101 qualification and ROHS3 compliance.

The SMBJ15AHM3_B/I meets all these criteria as a manufacturer-recommended substitute, with the primary distinction being active product status and packaging format (Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ15AHM3_B/I is the direct equivalent for the obsolete SMBJ15AHM3_A/I. Both parts share identical electrical specifications, thermal operating range, and automotive-grade AEC-Q101 certification. The substitute maintains full compliance with ROHS3 and REACH requirements.

The primary difference is product status: SMBJ15AHM3_A/I is obsolete, while SMBJ15AHM3_B/I is active and available. The packaging format differs (bulk versus Tape & Reel), which affects procurement and assembly processes but does not impact electrical performance or PCB compatibility.

For new designs or ongoing production requiring this 15V TVS diode specification, SMBJ15AHM3_B/I is the appropriate selection. The identical electrical and thermal characteristics ensure drop-in compatibility at the component level.

Frequently Asked Questions (FAQ)

Q: Can SMBJ15AHM3_B/I be used as a direct replacement for SMBJ15AHM3_A/I?

A: Yes. Both parts are electrically identical with matching voltage ratings (15V standoff, 16.7V breakdown minimum, 24.4V clamping maximum), current specifications (24.6A peak pulse), power rating (600W), and thermal range (-55°C to 150°C). They share the same DO-214AA (SMB) package and automotive AEC-Q101 qualification.

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

A: The primary difference is product status and packaging format. SMBJ15AHM3_A/I is obsolete and supplied in bulk packaging, while SMBJ15AHM3_B/I is active and supplied in Tape & Reel format. This affects availability and assembly handling but not electrical performance.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical compliance: Automotive grade, AEC-Q101 qualified, ROHS3 compliant, and REACH unaffected. Thermal and electrical specifications are fully equivalent.

Q: Does the Tape & Reel packaging affect PCB assembly compatibility?

A: No. The component itself remains in the DO-214AA (SMB) surface mount package. Tape & Reel is a supply format that facilitates automated assembly processes but does not alter the physical component or its electrical characteristics.

Q: What applications are these parts suitable for?

A: Both parts are specified for telecom applications requiring transient voltage suppression with 15V standoff protection and 600W peak pulse power handling in surface mount configurations.