TPSMC10HE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMC10HE3_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-214AB (SMC) package and provides 15V clamping protection at 100A peak pulse current. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

TPSMC10HE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1081TPSMC10HE3_A/I Datasheet

Current PartRFQ

TPSMC10AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 870TPSMC10AHE3_B/I Datasheet

DirectRFQ

SM15T10AY

STMicroelectronicsIn Stock: 3662SM15T10AY Datasheet

MFR RecommendedRFQ

SMCJ8.5A-13-F

Diodes IncorporatedIn Stock: 1063SMCJ8.5A-13-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMC10HE3_A/I is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 8.1V nominal
• Voltage - Clamping (Max) @ Ipp: 15V maximum
• Current - Peak Pulse (10/1000µs): 100A minimum
• Power - Peak Pulse: 1500W
• Package / Case: DO-214AB, SMC (surface mount)
• Mounting Type: Surface Mount
• Type: Zener (unidirectional)
• Unidirectional Channels: 1

Substitute parts must maintain compatibility within these electrical and mechanical boundaries. Acceptable variations include minor deviations in reverse standoff voltage (within ±0.55V), clamping voltage (within ±0.6V), and peak pulse current (within ±4A), provided all parts remain within the same power dissipation class and package footprint.

Parameter Comparison

Engineering Selection Recommendations

TPSMC10AHE3_B/I (Vishay) is the primary direct substitute. This part maintains identical operating temperature range (-65°C ~ 185°C), automotive grade classification, and AEC-Q101 qualification. Electrical parameters remain within acceptable tolerance: reverse standoff voltage increases to 8.55V, clamping voltage decreases to 14.5V, and peak pulse current increases to 103A. The part is currently in active production status with Tape & Reel packaging available.

SM15T10AY (STMicroelectronics) is a secondary alternative with the same reverse standoff voltage (8.55V) and automotive qualification. However, this part exhibits higher clamping voltage (18.6V) and significantly higher peak pulse current (538A at 8/20µs pulse width), indicating different pulse characteristic specifications. Operating temperature range is reduced to -40°C ~ 150°C. This part is suitable only when higher transient suppression capability is acceptable.

SMCJ8.5A-13-F (Diodes Incorporated) provides electrical parameters closely aligned with the main part: reverse standoff voltage of 8.5V, clamping voltage of 14.4V, and peak pulse current of 104.2A. However, automotive grade and AEC-Q101 qualification are not specified for this part. Operating temperature range is -55°C ~ 150°C. This part is suitable for non-automotive applications or where automotive qualification is not required.

Frequently Asked Questions (FAQ)

Q: Can TPSMC10AHE3_B/I be used as a direct replacement for TPSMC10HE3_A/I?

A: Yes. Both parts share identical package geometry (DO-214AB, SMC), operating temperature range (-65°C ~ 185°C), automotive grade, and AEC-Q101 qualification. Electrical parameters fall within acceptable substitution tolerance. TPSMC10AHE3_B/I is the recommended replacement due to active production status.

Q: What is the difference between the pulse specifications in SM15T10AY?

A: SM15T10AY specifies peak pulse current at 8/20µs pulse width (538A), whereas TPSMC10HE3_A/I specifies 10/1000µs pulse width (100A). These represent different transient event profiles. The 8/20µs specification indicates capability for faster, higher-amplitude transients. Selection depends on the actual transient waveform present in the application circuit.

Q: Is SMCJ8.5A-13-F suitable for automotive applications?

A: SMCJ8.5A-13-F does not carry automotive grade designation or AEC-Q101 qualification in the provided specifications. Use this part only in non-automotive applications or where automotive qualification is not a design requirement.

Q: Do all substitute parts use the same package footprint?

A: Yes. All listed substitute parts use DO-214AB (SMC) surface mount package, ensuring mechanical and thermal compatibility with the original TPSMC10HE3_A/I design.

Q: What is the significance of the reverse standoff voltage variation among substitutes?

A: Reverse standoff voltage determines the voltage threshold at which the TVS diode remains non-conducting. Variations of ±0.55V (8.1V to 8.55V) are within acceptable tolerance for this component category and do not affect circuit protection function in typical applications. The clamping voltage at peak pulse current is the more critical parameter for transient suppression performance.