TPSMB33AHE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMB33AHE3_A/I is an active Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This unidirectional Zener diode is designed for surface mount applications in the DO-214AA (SMB) package and is qualified to AEC-Q101 automotive standards. The device provides transient voltage suppression with a 28.2V reverse standoff voltage and 45.7V maximum clamping voltage. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, manage inventory across multiple suppliers, and maintain design continuity when the primary part becomes unavailable.

Substiute Parts

TPSMB33AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 3946TPSMB33AHE3_A/I Datasheet

Current PartRFQ

P6SMB33A-AU_R1_000A1

Panjit International Inc.In Stock: 1625P6SMB33A-AU_R1_000A1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMB33AHE3_A/I is determined by strict alignment with the following electrical and mechanical parameters:

Voltage specifications must match exactly: Reverse Standoff Voltage of 28.2V (Typ), Breakdown Voltage minimum of 31.4V, and Clamping Voltage maximum of 45.7V at peak pulse current.

Peak pulse current capability must be equal to or greater than 13.1A at the 10/1000µs pulse profile.

Peak pulse power rating must be 600W or higher.

Package and mounting type must be DO-214AA (SMB) surface mount configuration.

Automotive grade classification and AEC-Q101 qualification are required for applications demanding automotive-level reliability.

RoHS3 compliance is mandatory for regulatory alignment.

The substitute part P6SMB33A-AU_R1_000A1 from Panjit International Inc. meets all these criteria and is therefore a valid equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB33A-AU_R1_000A1 from Panjit International Inc. is a qualified equivalent substitute for the TPSMB33AHE3_A/I. Both devices carry active product status, automotive grade classification, and AEC-Q101 qualification, ensuring compliance with automotive reliability standards. Both are RoHS3 compliant and suitable for regulated applications.

The Panjit substitute demonstrates marginally higher peak pulse current capability (13.2A versus 13.1A), providing additional design margin. The operating temperature range of the Panjit device (-55 to 150°C) is narrower than the Vishay part (-65 to 185°C). Applications requiring operation at the extreme temperature boundaries of the Vishay specification should verify that the Panjit operating range is acceptable for the intended use case.

Both parts are functionally interchangeable in standard TVS diode applications where the specified voltage and current parameters are within design requirements.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB33A-AU_R1_000A1 be used as a direct replacement for the TPSMB33AHE3_A/I?

A: Yes. Both devices share identical voltage specifications (28.2V standoff, 31.4V breakdown, 45.7V clamping), identical power ratings (600W), identical package configuration (DO-214AA SMB), and identical automotive qualifications (AEC-Q101). The Panjit part has slightly higher peak pulse current (13.2A vs 13.1A), which is compatible.

Q: Are there temperature range differences between these parts?

A: Yes. The Vishay TPSMB33AHE3_A/I operates from -65 to 185°C (TJ), while the Panjit P6SMB33A-AU_R1_000A1 operates from -55 to 150°C (TJ). Applications requiring operation below -55°C or above 150°C must use the Vishay part.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both devices are automotive grade and carry AEC-Q101 qualification. Both are RoHS3 compliant.

Q: Is the package identical between these parts?

A: Yes. Both use the DO-214AA (SMB) surface mount package, ensuring mechanical and electrical compatibility on the same PCB layout.

Q: What determines whether a part can substitute for the TPSMB33AHE3_A/I?

A: Substitution requires exact matching of reverse standoff voltage (28.2V), breakdown voltage (31.4V minimum), clamping voltage (45.7V maximum), peak pulse power (600W), and package type (DO-214AA SMB). Peak pulse current must be equal to or greater than 13.1A. Automotive grade and AEC-Q101 qualification are mandatory.