SMBJ30CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ30CAHM3_A/I is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for telecom applications requiring transient voltage protection. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

SMBJ30CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1167SMBJ30CAHM3_A/I Datasheet

Current PartRFQ

SMBJ30CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1039SMBJ30CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ30CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 30V
• Voltage - Breakdown (Min): 33.3V
• Voltage - Clamping (Max) @ Ipp: 48.4V
• Current - Peak Pulse (10/1000µs): 12.4A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMBJ30CAHM3_B/I is classified as a manufacturer-recommended substitute. Both parts share identical electrical performance specifications and mechanical packaging, with the primary distinction being product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ30CAHM3_B/I is the direct equivalent for the obsolete SMBJ30CAHM3_A/I. Both components maintain identical electrical specifications, thermal performance, and automotive-grade certifications. The SMBJ30CAHM3_B/I carries Active product status, ensuring continued availability and manufacturer support. Both parts satisfy ROHS3 compliance and AEC-Q101 automotive qualification requirements. The primary distinction is packaging format: the substitute is supplied in Tape & Reel (TR) configuration, which is standard for production environments. For applications currently using the SMBJ30CAHM3_A/I, direct substitution with SMBJ30CAHM3_B/I is electrically and mechanically valid without design modification.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30CAHM3_B/I replace SMBJ30CAHM3_A/I in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The substitute maintains the same voltage ratings, current handling, thermal range, and package configuration. Direct substitution is valid without circuit redesign.

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

A: The primary difference is product status and packaging format. SMBJ30CAHM3_A/I is obsolete and supplied in bulk packaging, while SMBJ30CAHM3_B/I is active and supplied in Tape & Reel format. Electrical performance is identical.

Q: Are both parts automotive-qualified?

A: Yes. Both SMBJ30CAHM3_A/I and SMBJ30CAHM3_B/I carry Automotive Grade classification and AEC-Q101 qualification, meeting automotive industry reliability standards.

Q: Does the Tape & Reel packaging affect electrical performance?

A: No. Packaging format does not affect electrical or thermal characteristics. Tape & Reel is a distribution format that provides manufacturing convenience and does not alter component performance.

Q: Are both parts RoHS compliant?

A: Yes. Both components are ROHS3 Compliant, meeting environmental and hazardous substance restrictions.

Q: What is the operating temperature range for these TVS diodes?

A: Both parts operate across -55°C to 150°C junction temperature range, suitable for automotive and telecom applications requiring extended thermal performance.