SMB10J12AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMB10J12AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component features a 12V reverse standoff voltage with a 19.9V maximum clamping voltage and 50.3A 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

SMB10J12AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1151SMB10J12AHM3_A/I Datasheet

Current PartRFQ

SMB10J12AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 915SMB10J12AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMB10J12AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 12V (Typ)
• Voltage - Breakdown: 13.3V (Min)
• Voltage - Clamping: 19.9V (Max) @ Ipp
• Current - Peak Pulse: 50.3A (10/1000µs)
• Power - Peak Pulse: 1000W (1kW)
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMB10J12AHM3_B/I meets all these criteria and is classified as an active product, making it a direct functional and mechanical equivalent suitable for replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The SMB10J12AHM3_B/I is the direct equivalent for the obsolete SMB10J12AHM3_A/I. Both parts share identical electrical specifications, thermal ratings, and automotive-grade certifications including AEC-Q101 qualification. The primary distinction is product status: the substitute is actively manufactured and available, whereas the main part is obsolete. The SMB10J12AHM3_B/I is supplied in Tape & Reel packaging, which is standard for production environments. No design modifications or re-qualification are required when transitioning to this substitute part.

Frequently Asked Questions (FAQ)

Q: Can SMB10J12AHM3_B/I be used as a direct replacement for SMB10J12AHM3_A/I?

A: Yes. Both parts are identical in electrical performance, thermal characteristics, and mechanical specifications. The substitute is an active product with the same automotive qualification and compliance certifications.

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

A: The primary difference is product status and packaging format. SMB10J12AHM3_A/I is obsolete and supplied in bulk; SMB10J12AHM3_B/I is active and supplied in Tape & Reel format. Electrical and thermal specifications are identical.

Q: Are there any compatibility concerns with the DO-214AA (SMB) package?

A: No. Both parts use the same DO-214AA (SMB) surface mount package with identical pinout and footprint. PCB layout and assembly processes require no modification.

Q: Does the substitute part meet automotive requirements?

A: Yes. SMB10J12AHM3_B/I carries automotive grade classification and AEC-Q101 qualification, matching the original part's compliance profile.

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 applications.