SMBJ64CAHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ64CAHE3_A/I is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for transient overvoltage protection in electronic circuits, with a 64V reverse standoff voltage and 103V maximum clamping voltage. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing design support and component procurement.

Substiute Parts

SMBJ64CAHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 778SMBJ64CAHE3_A/I Datasheet

Current PartRFQ

SMBJ64CAHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 838SMBJ64CAHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ64CAHE3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage specifications: Reverse standoff voltage of 64V (typical), breakdown voltage minimum of 71.1V, and maximum clamping voltage of 103V at peak pulse current must remain constant.

Current and power ratings: Peak pulse current of 5.8A at 10/1000µs pulse duration and peak pulse power of 600W must be maintained.

Physical and mounting characteristics: Surface mount configuration in DO-214AA (SMB) package is required for mechanical compatibility.

Operational environment: Operating temperature range of -55°C to 150°C (junction temperature) and automotive-grade qualification with AEC-Q101 certification must be preserved.

Compliance standards: ROHS3 compliance and REACH unaffected status must be maintained.

The substitute part must originate from the same manufacturer (Vishay General Semiconductor - Diodes Division) and belong to the TransZorb® series to ensure design continuity and performance consistency.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ64CAHE3_B/I is the direct substitute for the obsolete SMBJ64CAHE3_A/I. Both parts maintain identical electrical specifications across all critical parameters: voltage ratings, current capacity, power dissipation, and operating temperature range. Both components carry automotive-grade qualification with AEC-Q101 certification and comply with ROHS3 and REACH requirements.

The primary distinction between the two parts is product status and packaging format. The SMBJ64CAHE3_A/I is obsolete, while the SMBJ64CAHE3_B/I is active and available in Tape & Reel (TR) packaging, which is standard for production environments. The active status of the substitute part ensures continued availability and manufacturing support.

For new designs or component replenishment, the SMBJ64CAHE3_B/I should be selected. For existing assemblies using the SMBJ64CAHE3_A/I, direct replacement with the SMBJ64CAHE3_B/I is electrically and mechanically compatible without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ64CAHE3_B/I be used as a direct replacement for the SMBJ64CAHE3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The SMBJ64CAHE3_B/I is the active production equivalent of the obsolete SMBJ64CAHE3_A/I and requires no design changes for substitution.

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

A: The primary difference is product status. The SMBJ64CAHE3_A/I is obsolete, while the SMBJ64CAHE3_B/I is active. Additionally, the substitute part is supplied in Tape & Reel (TR) packaging format, which is standard for manufacturing operations. The electrical and mechanical specifications are identical.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the SMBJ64CAHE3_A/I and SMBJ64CAHE3_B/I carry automotive-grade qualification with AEC-Q101 certification, meeting automotive industry reliability and quality standards.

Q: Do both parts meet current compliance requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory compliance standards.

Q: Is the DO-214AA (SMB) package identical for both parts?

A: Yes. Both parts use the same DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility on printed circuit boards.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the same temperature range of -55°C to 150°C (junction temperature), suitable for automotive and industrial applications.