SMB10J40AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMB10J40AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component features a 40V reverse standoff voltage with a 64.5V maximum clamping voltage and 15.5A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

SMB10J40AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 955SMB10J40AHM3_A/I Datasheet

Current PartRFQ

SMB10J40AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1078SMB10J40AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMB10J40AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 40V
• Voltage - Breakdown (Min): 44.4V
• Voltage - Clamping (Max) @ Ipp: 64.5V
• Current - Peak Pulse (10/1000µs): 15.5A
• Power - Peak Pulse: 1000W (1kW)
• Package / Case: DO-214AA, SMB
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMB10J40AHM3_B/I is identified as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status: the main part is obsolete while the substitute is active, with improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SMB10J40AHM3_B/I is the direct equivalent for the obsolete SMB10J40AHM3_A/I. Both components maintain identical electrical performance specifications and automotive-grade certifications (AEC-Q101). The substitute part is currently in active production status with confirmed inventory availability, making it the appropriate selection for new designs and component replenishment. Both parts comply with ROHS3 and REACH requirements, ensuring regulatory alignment for telecom applications.

Frequently Asked Questions (FAQ)

Q: Can SMB10J40AHM3_B/I be used as a direct replacement for SMB10J40AHM3_A/I?

A: Yes. Both parts are electrically identical with matching voltage ratings (40V reverse standoff, 64.5V clamping), current specifications (15.5A peak pulse), and power dissipation (1kW). They share the same DO-214AA (SMB) package and automotive qualification (AEC-Q101).

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

A: The primary difference is product status. SMB10J40AHM3_A/I is obsolete, while SMB10J40AHM3_B/I is active production. The suffix designation (_A/I versus _B/I) indicates manufacturing revision, but electrical and mechanical specifications remain identical.

Q: Are there packaging differences between the main part and substitute?

A: No. Both components use the DO-214AA (SMB) surface mount package. The substitute is available in Tape & Reel (TR) packaging format, which is standard for active production components.

Q: Do both parts meet automotive requirements?

A: Yes. Both SMB10J40AHM3_A/I and SMB10J40AHM3_B/I are automotive-grade components qualified to AEC-Q101 standard, suitable for telecom applications requiring transient voltage suppression.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching voltage ratings (40V reverse standoff, 44.4V breakdown minimum, 64.5V clamping maximum), peak pulse current (15.5A), power dissipation (1kW), operating temperature range (-55°C to 150°C), package type (DO-214AA), and automotive qualification (AEC-Q101).