SMBJ75AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ75AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AA (SMB) package. This component provides transient overvoltage protection with a 75V reverse standoff voltage and 121V maximum clamping voltage at peak pulse current. The part is currently classified as obsolete, making identification of active equivalent substitutes essential for ongoing design support and procurement.

Substiute Parts

SMBJ75AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 913SMBJ75AHE3_A/I Datasheet

Current PartRFQ

SMBJ75AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 981SMBJ75AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ75AHE3_A/I is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 75V
• Voltage - Breakdown (Min): 83.3V
• Voltage - Clamping (Max) @ Ipp: 121V
• Current - Peak Pulse (10/1000µs): 5A
• Power - Peak Pulse: 600W
• Unidirectional Channels: 1
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ75AHE3_B/I is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications and automotive-grade qualification while transitioning from obsolete to active product status.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ75AHE3_B/I is the direct substitute for the SMBJ75AHE3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division within the TransZorb® series and maintain identical electrical performance specifications across all critical parameters. The primary distinction is product status: the original part is obsolete while the substitute is active.

Both parts carry automotive-grade classification with AEC-Q101 qualification, ensuring compliance with automotive reliability standards. Both are ROHS3 compliant and REACH unaffected. The packaging, mounting configuration, and thermal operating range are identical, enabling direct board-level substitution without design modification.

Selection of the SMBJ75AHE3_B/I is appropriate for new designs and ongoing production requiring active component availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ75AHE3_B/I be used as a direct replacement for the SMBJ75AHE3_A/I?

A: Yes. The SMBJ75AHE3_B/I is the manufacturer-recommended substitute with identical electrical specifications, package configuration, and automotive qualification. No circuit modifications are required.

Q: What is the difference between the SMBJ75AHE3_A/I and SMBJ75AHE3_B/I?

A: The parts are electrically and mechanically equivalent. The primary difference is product status: SMBJ75AHE3_A/I is obsolete, while SMBJ75AHE3_B/I is active. The substitute offers ongoing manufacturer support and availability.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry automotive-grade classification and AEC-Q101 qualification, meeting automotive reliability and quality standards.

Q: What packaging options are available?

A: Both parts are supplied in DO-214AA (SMB) surface mount package. The SMBJ75AHE3_B/I is available in Tape & Reel (TR) packaging for production volumes.

Q: Do these parts have the same thermal operating range?

A: Yes. Both parts operate across -55°C to 150°C junction temperature range, suitable for automotive and industrial environments.

Q: Are there any compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected, with identical environmental compliance status.