SMBJ90AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ90AHM3_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 90V reverse standoff voltage with a 146V maximum clamping voltage and 4.1A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

SMBJ90AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1007SMBJ90AHM3_A/I Datasheet

Current PartRFQ

SMBJ90AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 791SMBJ90AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ90AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 90V (±tolerance)
• Voltage - Clamping (Max) @ Ipp: 146V
• Current - Peak Pulse (10/1000µs): 4.1A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMBJ90AHM3_B/I is classified as a manufacturer-recommended substitute because it maintains identical electrical specifications, thermal operating range, automotive qualification, and package configuration while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ90AHM3_B/I is the direct equivalent for the obsolete SMBJ90AHM3_A/I. Both components are manufactured by Vishay and maintain identical electrical performance specifications, thermal operating range, and automotive-grade qualification with AEC-Q101 certification. The primary distinction is product status: the SMBJ90AHM3_B/I is currently active and available, whereas the SMBJ90AHM3_A/I is obsolete. Both components are ROHS3 compliant and suitable for telecom transient voltage suppression applications. The packaging format (Tape & Reel for the substitute) is a standard supply configuration that does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ90AHM3_B/I be used as a direct replacement for the SMBJ90AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: 90V reverse standoff voltage, 146V clamping voltage, 4.1A peak pulse current, 600W peak pulse power, DO-214AA (SMB) package, and -55°C to 150°C operating temperature range. Both carry automotive grade and AEC-Q101 qualification.

Q: What is the difference between the SMBJ90AHM3_A/I and SMBJ90AHM3_B/I?

A: The primary difference is product status. The SMBJ90AHM3_A/I is obsolete, while the SMBJ90AHM3_B/I is active. The substitute is supplied in Tape & Reel packaging format. Electrical specifications and performance characteristics are identical.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. The parts are pin-compatible, functionally equivalent, and maintain the same thermal and electrical performance envelope. PCB layout and circuit design require no modification.

Q: Does the packaging format (Tape & Reel) affect the component's performance?

A: No. Tape & Reel is a standard supply and handling format that does not affect electrical performance, reliability, or functional characteristics of the component itself.

Q: Are both parts compliant with automotive and environmental standards?

A: Yes. Both the SMBJ90AHM3_A/I and SMBJ90AHM3_B/I are automotive-grade components with AEC-Q101 qualification and ROHS3 compliance.