SMBJ90CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ90CAHM3_A/I is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient protection. This component features a 90V reverse standoff voltage with 146V maximum clamping voltage and 4.1A peak pulse current capability in a surface mount DO-214AA (SMB) package.

The SMBJ90CAHM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.

Substiute Parts

SMBJ90CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1149SMBJ90CAHM3_A/I Datasheet

Current PartRFQ

SMBJ90CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 877SMBJ90CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ90CAHM3_A/I is determined by strict equivalence across the following critical parameters:

Voltage specifications: Reverse standoff voltage of 90V, minimum breakdown voltage of 100V, and maximum clamping voltage of 146V must remain unchanged.

Current and power ratings: Peak pulse current of 4.1A and peak pulse power of 600W define the transient protection capability.

Electrical configuration: Single bidirectional channel architecture.

Mechanical compatibility: DO-214AA (SMB) surface mount package ensures PCB layout compatibility.

Environmental and compliance requirements: Operating temperature range of -55°C to 150°C, Automotive grade classification, AEC-Q101 qualification, ROHS3 compliance, and REACH unaffected status.

The SMBJ90CAHM3_B/I meets all substitution criteria as a direct equivalent, with the primary distinction being packaging format (Tape & Reel) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ90CAHM3_B/I is the direct substitute for the obsolete SMBJ90CAHM3_A/I. Both components share identical electrical specifications, thermal characteristics, and compliance certifications including AEC-Q101 automotive qualification and ROHS3 compliance.

The SMBJ90CAHM3_B/I maintains active product status, ensuring ongoing availability and supply chain support. The packaging difference (Tape & Reel format versus standard packaging) does not affect electrical performance or PCB assembly compatibility, as both utilize the same DO-214AA (SMB) surface mount package.

Selection of the SMBJ90CAHM3_B/I eliminates obsolescence risk while preserving full functional and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can SMBJ90CAHM3_B/I be used as a direct replacement for SMBJ90CAHM3_A/I?

A: Yes. Both components are electrically and mechanically identical, with matching voltage ratings (90V standoff, 146V clamping), current specifications (4.1A peak pulse), power rating (600W), and package format (DO-214AA SMB). The primary difference is product status and packaging format.

Q: What is the significance of the packaging format difference?

A: The SMBJ90CAHM3_A/I uses standard packaging, while SMBJ90CAHM3_B/I is supplied in Tape & Reel (TR) format. Both formats contain identical components in the same DO-214AA (SMB) package. Tape & Reel format is standard for high-volume manufacturing and automated assembly processes.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical compliance status: ROHS3 compliant, REACH unaffected, Automotive grade, and AEC-Q101 qualified. Thermal operating range (-55°C to 150°C) is identical.

Q: Why is the original part marked as Obsolete?

A: Obsolescence typically reflects manufacturer discontinuation of specific packaging or variant configurations. The SMBJ90CAHM3_B/I represents the active continuation of this product line with identical electrical and mechanical specifications.

Q: Are there any application limitations when substituting?

A: No. The substitute part maintains full compatibility for telecom transient protection applications. Voltage suppression characteristics, thermal performance, and reliability certifications remain unchanged.