SMBJ11AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ11AHM3_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 an 11V reverse standoff voltage with an 18.2V maximum clamping voltage and 33A 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

SMBJ11AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1137SMBJ11AHM3_A/I Datasheet

Current PartRFQ

SMBJ11AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1010SMBJ11AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ11AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 11V (±tolerance)
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Current - Peak Pulse (10/1000µs): 33A
• 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 SMBJ11AHM3_B/I qualifies as a direct substitute, maintaining identical electrical specifications and mechanical compatibility while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ11AHM3_B/I is the direct equivalent for the obsolete SMBJ11AHM3_A/I. Both components maintain identical electrical and mechanical specifications, with the primary distinction being product status. The substitute part is currently in active production, ensuring long-term supply chain reliability and availability. Both parts carry automotive-grade qualification and AEC-Q101 certification, meeting the same regulatory and quality standards. The packaging format (Tape & Reel for the substitute) is standard for active production components and presents no compatibility issues for manufacturing processes. Selection of the SMBJ11AHM3_B/I eliminates obsolescence risk while preserving full functional equivalence in telecom transient protection applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ11AHM3_B/I be used as a direct replacement for SMBJ11AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including voltage ratings, current capacity, temperature range, and package configuration. The substitute is the active production equivalent.

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

A: The primary difference is product status. SMBJ11AHM3_A/I is obsolete, while SMBJ11AHM3_B/I is active. The suffix designations (_A/I versus _B/I) indicate manufacturing revisions, but electrical performance remains equivalent.

Q: Are there any packaging differences?

A: The main part is supplied in standard packaging, while the substitute is supplied in Tape & Reel (TR) format. Both use the DO-214AA (SMB) package case. Tape & Reel is the standard format for active production components and is compatible with automated assembly equipment.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SMBJ11AHM3_A/I and SMBJ11AHM3_B/I carry automotive-grade classification and AEC-Q101 qualification, meeting identical reliability and quality standards.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: 11V reverse standoff voltage, 18.2V maximum clamping voltage, 33A peak pulse current, 600W peak pulse power, DO-214AA (SMB) package, unidirectional configuration, -55°C to 150°C operating temperature range, and automotive AEC-Q101 qualification.