SM15T36A-M3/9AT Equivalent & Substitute Parts

Part Overview

The SM15T36A-M3/9AT is an active Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This unidirectional Zener diode is designed for general-purpose transient voltage suppression in surface mount applications. The part operates across a temperature range of -65°C to 150°C and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the DO-214AB (SMC/SMCJ) package family.

Substiute Parts

SM15T36A-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 950SM15T36A-M3/9AT Datasheet

Current PartRFQ

1.5SMC36A

Taiwan Semiconductor CorporationIn Stock: 68311.5SMC36A Datasheet

MFR RecommendedRFQ

1.5SMC36A

Taiwan Semiconductor CorporationIn Stock: 68311.5SMC36A Datasheet

MFR RecommendedRFQ

TPSMC36A

Littelfuse Inc.In Stock: 3571TPSMC36A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM15T36A-M3/9AT are qualified based on the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 30.8V
• Voltage - Breakdown (Min): 34.2V
• Voltage - Clamping (Max) @ Ipp: 49.9V
• Current - Peak Pulse (10/1000µs): 30A to 31A range
• Power - Peak Pulse: 1500W (1.5kW)
• Package / Case: DO-214AB (SMC or SMCJ variant)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

All substitute parts maintain identical voltage specifications and equivalent peak pulse power ratings. Peak pulse current specifications vary within 0.5A, which is within acceptable tolerance for this component category. All substitutes are packaged in DO-214AB form factor and are surface mount compatible.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and full RoHS3 compliance. The SM15T36A-M3/9AT and TPSMC36A both support the extended lower operating temperature limit of -65°C, while the 1.5SMC36A operates from -55°C. For applications requiring the full -65°C lower temperature specification, the SM15T36A-M3/9AT or TPSMC36A are appropriate selections.

The TPSMC36A carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The 1.5SMC36A is specified for telecom applications. The SM15T36A-M3/9AT is designated for general-purpose applications.

Peak pulse current specifications are equivalent across all parts: SM15T36A-M3/9AT at 30A, 1.5SMC36A at 31A, and TPSMC36A at 30.5A. These variations fall within acceptable tolerance for TVS diode selection.

Frequently Asked Questions (FAQ)

Q: Can the 1.5SMC36A replace the SM15T36A-M3/9AT in all applications?

A: The 1.5SMC36A is electrically equivalent for voltage and power specifications. However, it operates from -55°C minimum, compared to -65°C for the SM15T36A-M3/9AT. Substitution is valid only for applications where the -55°C lower temperature limit is acceptable.

Q: What is the difference between DO-214AB SMC and SMCJ packaging?

A: Both are DO-214AB form factors suitable for surface mount assembly. SMC and SMCJ refer to supplier device package designations. All three parts are mechanically compatible in DO-214AB footprints.

Q: Is the TPSMC36A suitable for automotive applications?

A: Yes. The TPSMC36A carries AEC-Q101 automotive qualification and is appropriate for automotive-grade transient voltage suppression circuits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three parts—SM15T36A-M3/9AT, 1.5SMC36A, and TPSMC36A—are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level).

Q: What is the primary substitution criterion for these TVS diodes?

A: Voltage specifications (30.8V reverse standoff, 34.2V breakdown minimum, 49.9V clamping maximum) and power rating (1500W peak pulse) are the primary criteria. Peak pulse current tolerance of ±1A is acceptable within this component category.