SMBJ22AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ22AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component features a 22V reverse standoff voltage with a 35.5V maximum clamping voltage and 16.9A 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 for new production and field replacements.

Substiute Parts

SMBJ22AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 833SMBJ22AHM3_A/I Datasheet

Current PartRFQ

SMBJ22AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 948SMBJ22AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ22AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): 16.9A
• 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 SMBJ22AHM3_B/I is classified as a manufacturer-recommended substitute. This part 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 SMBJ22AHM3_B/I is the direct equivalent for the obsolete SMBJ22AHM3_A/I. Both parts are manufactured by Vishay and maintain identical electrical and thermal specifications. The primary distinction is product status: the SMBJ22AHM3_B/I is currently in active production, ensuring long-term availability and supply chain continuity.

Both parts carry Automotive grade classification and AEC-Q101 qualification, meeting automotive reliability standards. Both are ROHS3 compliant and REACH unaffected, satisfying regulatory requirements for new designs and field replacements.

The SMBJ22AHM3_B/I is supplied in Tape & Reel format, which is standard for high-volume manufacturing and automated assembly processes. This packaging format does not affect electrical performance or mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ22AHM3_B/I be used as a direct replacement for the SMBJ22AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The SMBJ22AHM3_B/I is the active production equivalent and is fully compatible with designs originally specified for the SMBJ22AHM3_A/I.

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

A: The primary difference is product status. The SMBJ22AHM3_A/I is obsolete, while the SMBJ22AHM3_B/I is in active production. The SMBJ22AHM3_B/I is also supplied in Tape & Reel packaging, which is standard for manufacturing environments.

Q: Are there any electrical performance differences?

A: No. Both parts share identical specifications: 22V reverse standoff voltage, 35.5V maximum clamping voltage, 16.9A peak pulse current, and 600W peak pulse power rating.

Q: Will the Tape & Reel packaging affect PCB assembly?

A: No. Tape & Reel is a standard packaging format for surface mount components and is compatible with automated pick-and-place assembly equipment. The component itself remains in the DO-214AA (SMB) package.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the SMBJ22AHM3_A/I and SMBJ22AHM3_B/I carry Automotive grade classification and AEC-Q101 qualification.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 150°C junction temperature, suitable for automotive and telecom environments.