SMBJ110AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ110AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient overvoltage protection. This component features a 110V reverse standoff voltage with a 177V maximum clamping voltage and 3.4A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

SMBJ110AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1076SMBJ110AHM3_A/I Datasheet

Current PartRFQ

SMBJ110AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 922SMBJ110AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ110AHM3_A/I is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage specifications must match exactly: Reverse Standoff Voltage of 110V (Typ), Breakdown Voltage minimum of 122V, and Clamping Voltage maximum of 177V at peak pulse current.

Current and power ratings must be identical: Peak Pulse Current of 3.4A at 10/1000µs pulse duration and Peak Pulse Power of 600W.

Package and mounting specifications must be identical: DO-214AA (SMB) surface mount package in Tape & Reel (TR) configuration.

Functional characteristics must be preserved: Unidirectional Zener TVS diode topology with single channel configuration.

Environmental and compliance requirements must be maintained: Operating temperature range of -55°C to 150°C, Automotive grade, AEC-Q101 qualification, ROHS3 compliance, and MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ110AHM3_B/I is the direct equivalent substitute for the obsolete SMBJ110AHM3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series and maintain identical electrical specifications, package configuration, and compliance certifications.

The primary distinction is product status: the SMBJ110AHM3_A/I is obsolete while the SMBJ110AHM3_B/I is active. This transition ensures continued supply chain availability and manufacturing support. Both parts carry Automotive grade qualification with AEC-Q101 certification, ROHS3 compliance, and MSL 1 rating, making them suitable for automotive and telecom applications requiring transient voltage suppression.

Selection of the SMBJ110AHM3_B/I provides equivalent functional performance with the advantage of active product status and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Are the SMBJ110AHM3_A/I and SMBJ110AHM3_B/I electrically identical?

A: Yes. Both parts share identical electrical specifications including 110V reverse standoff voltage, 122V minimum breakdown voltage, 177V maximum clamping voltage, 3.4A peak pulse current, and 600W peak pulse power rating.

Q: Can the SMBJ110AHM3_B/I be used as a direct replacement in existing designs?

A: Yes. The SMBJ110AHM3_B/I is a direct substitute. It maintains the same DO-214AA (SMB) surface mount package, identical electrical performance, and equivalent compliance certifications (Automotive grade, AEC-Q101, ROHS3).

Q: What is the significance of the product status difference?

A: The SMBJ110AHM3_A/I is classified as obsolete, indicating discontinued manufacturing. The SMBJ110AHM3_B/I is active, ensuring ongoing availability, manufacturing support, and supply chain continuity for new designs and production runs.

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

A: No. Both parts operate across the identical temperature range of -55°C to 150°C (TJ) and maintain the same MSL 1 (Unlimited) moisture sensitivity rating.

Q: What applications are these parts suitable for?

A: Both parts are specified for telecom applications requiring transient overvoltage protection in circuits operating at or near 110V nominal voltage levels.