SMBJ64CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ64CAHM3_A/I is a bidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This surface mount component operates in the DO-214AA (SMB) package and provides 600W peak pulse power protection at 64V reverse standoff voltage. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

SMBJ64CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1284SMBJ64CAHM3_A/I Datasheet

Current PartRFQ

SMBJ64CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1164SMBJ64CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ64CAHM3_A/I is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage Rating: Reverse standoff voltage of 64V, breakdown minimum of 71.1V, and clamping voltage maximum of 103V must remain identical.

Current Handling: Peak pulse current of 5.8A (10/1000µs pulse) and peak pulse power of 600W must be maintained.

Package Compatibility: DO-214AA (SMB) surface mount package is mandatory for PCB layout compatibility.

Bidirectional Configuration: Single bidirectional channel requirement must be preserved.

Temperature Range: Operating temperature range of -55°C to 150°C (TJ) must be supported.

Compliance and Certification: Automotive grade with AEC-Q101 qualification, ROHS3 compliance, and REACH unaffected status must be maintained.

The SMBJ64CAHM3_B/I meets all these criteria and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ64CAHM3_B/I is the direct equivalent substitute for the obsolete SMBJ64CAHM3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series and share identical electrical specifications across all critical parameters: 64V reverse standoff voltage, 71.1V minimum breakdown voltage, 103V maximum clamping voltage, 5.8A peak pulse current, and 600W peak pulse power.

The primary distinction between the two parts is product status and packaging format. The SMBJ64CAHM3_A/I is obsolete, while the SMBJ64CAHM3_B/I maintains active production status. The substitute part is supplied in Tape & Reel (TR) packaging, whereas the original was supplied in bulk packaging. Both parts maintain identical automotive grade qualification (AEC-Q101), ROHS3 compliance, and REACH unaffected status.

For new designs or ongoing production requiring the 64V, 600W TVS diode in DO-214AA package, the SMBJ64CAHM3_B/I is the appropriate selection. The active production status and identical electrical performance ensure long-term availability and design continuity.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ64CAHM3_B/I be used as a direct replacement for the SMBJ64CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The SMBJ64CAHM3_B/I is the manufacturer-recommended substitute and shares all critical parameters: 64V reverse standoff voltage, 103V clamping voltage, 5.8A peak pulse current, 600W peak pulse power, DO-214AA package, and AEC-Q101 automotive qualification.

Q: What is the difference between the SMBJ64CAHM3_A/I and SMBJ64CAHM3_B/I?

A: The primary differences are product status and packaging format. The SMBJ64CAHM3_A/I is obsolete and supplied in bulk packaging. The SMBJ64CAHM3_B/I is in active production and supplied in Tape & Reel (TR) packaging. All electrical specifications and certifications are identical.

Q: Is the DO-214AA (SMB) package compatible with existing PCB layouts designed for the SMBJ64CAHM3_A/I?

A: Yes. Both parts use the identical DO-214AA (SMB) surface mount package. PCB footprints, land patterns, and assembly processes require no modification.

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

A: Yes. Both the SMBJ64CAHM3_A/I and SMBJ64CAHM3_B/I are automotive grade with AEC-Q101 qualification, ROHS3 compliant, and REACH unaffected. Operating temperature range is -55°C to 150°C (TJ) for both parts.

Q: Why is the SMBJ64CAHM3_A/I listed as obsolete?

A: The SMBJ64CAHM3_A/I has been superseded by the SMBJ64CAHM3_B/I in the manufacturer's product line. The substitute part maintains identical electrical performance and is in active production, ensuring continued availability for design support and procurement.