SMBJ33CAHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ33CAHE3_A/I is a bidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AA (SMB) package. This component provides transient overvoltage protection with a 33V reverse standoff voltage and 53.3V maximum clamping voltage at peak pulse current of 11.3A. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

SMBJ33CAHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 10205SMBJ33CAHE3_A/I Datasheet

Current PartRFQ

SMBJ33CAHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 914SMBJ33CAHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ33CAHE3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 33V (±tolerance)
• Voltage - Clamping (Max) @ Ipp: 53.3V
• Current - Peak Pulse (10/1000µs): 11.3A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Type: Zener, Bidirectional
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ33CAHE3_B/I variant meets all these criteria and is classified as the manufacturer-recommended substitute. Both parts share identical electrical performance specifications and environmental ratings, with the primary distinction being product status: the substitute is currently in active production.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ33CAHE3_B/I is the direct equivalent substitute for the obsolete SMBJ33CAHE3_A/I. Both parts are manufactured by Vishay and carry identical electrical specifications, thermal ratings, and automotive-grade certifications including AEC-Q101 qualification. The substitute maintains full compliance with ROHS3 and REACH requirements.

Selection of the SMBJ33CAHE3_B/I is appropriate for new designs and production continuity where the SMBJ33CAHE3_A/I is no longer available. The active product status of the substitute ensures ongoing availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ33CAHE3_B/I be used as a direct replacement for the SMBJ33CAHE3_A/I?

A: Yes. Both parts are electrically and mechanically identical, with matching voltage ratings (33V standoff, 53.3V clamping), current handling (11.3A peak pulse), power dissipation (600W), and package specifications (DO-214AA, SMB). The substitute is the manufacturer-recommended equivalent.

Q: What is the difference between the SMBJ33CAHE3_A/I and SMBJ33CAHE3_B/I?

A: The primary difference is product status. The SMBJ33CAHE3_A/I is obsolete, while the SMBJ33CAHE3_B/I is in active production. All electrical, thermal, and compliance specifications are identical.

Q: Are both parts suitable for automotive applications?

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

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

A: Both parts use the DO-214AA (SMB) surface mount package, enabling direct PCB substitution without layout modifications.

Q: Are there any compliance or environmental differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and maintain identical operating temperature ranges (-55°C to 150°C junction temperature).