SMBJ64AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ64AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in the DO-214AA (SMB) package and provides transient voltage protection with a 64V reverse standoff voltage and 103V maximum clamping voltage. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and maintenance applications.

Substiute Parts

SMBJ64AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 969SMBJ64AHE3_A/I Datasheet

Current PartRFQ

SMBJ64AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 815SMBJ64AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ64AHE3_A/I is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 64V
• Voltage - Breakdown (Min): 71.1V
• Voltage - Clamping (Max) @ Ipp: 103V
• Current - Peak Pulse (10/1000µs): 5.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMBJ64AHE3_B/I is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications and mechanical compatibility while offering active product status, ensuring continued availability and manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ64AHE3_B/I is the direct equivalent substitute for the obsolete SMBJ64AHE3_A/I. Both parts are manufactured by Vishay and share identical electrical performance specifications, mechanical packaging, and automotive-grade qualifications. The primary distinction is product status: the substitute maintains active manufacturing status, ensuring supply chain continuity and compliance with current production standards.

Both parts satisfy AEC-Q101 automotive qualification requirements and maintain ROHS3 compliance and REACH unaffected status. The electrical parameters—including 64V reverse standoff voltage, 71.1V minimum breakdown voltage, 103V maximum clamping voltage, 5.8A peak pulse current, and 600W peak pulse power—are identical across both parts. The DO-214AA (SMB) surface mount package provides mechanical interchangeability without design modification.

Selection of the SMBJ64AHE3_B/I is appropriate for all applications previously served by the SMBJ64AHE3_A/I, with no circuit redesign or board layout changes required.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ64AHE3_B/I be used as a direct replacement for the SMBJ64AHE3_A/I?

A: Yes. The SMBJ64AHE3_B/I is electrically and mechanically identical to the SMBJ64AHE3_A/I. All electrical specifications, operating temperature range, package type, and automotive qualifications are equivalent. No circuit modifications or board layout changes are necessary.

Q: What is the difference between the SMBJ64AHE3_A/I and SMBJ64AHE3_B/I?

A: The primary difference is product status. The SMBJ64AHE3_A/I is obsolete, while the SMBJ64AHE3_B/I is active. Both parts share identical electrical and mechanical specifications, including voltage ratings, current ratings, power dissipation, package type, and automotive qualifications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the SMBJ64AHE3_A/I and SMBJ64AHE3_B/I carry automotive grade classification and AEC-Q101 qualification, making them suitable for automotive transient voltage suppression applications.

Q: What is the package type for these TVS diodes?

A: Both parts use the DO-214AA (SMB) surface mount package, enabling direct board-level substitution without mechanical redesign.

Q: Do these parts meet environmental compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.