P6SMB15A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB15A-M3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and provides transient overvoltage protection for general-purpose applications. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMB15A-M3/5B
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Type	Zener, Unidirectional
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Voltage - Reverse Standoff (Typ)	12.8V
Voltage - Breakdown (Min)	14.3V
Voltage - Clamping (Max) @ Ipp	21.2V
Current - Peak Pulse (10/1000µs)	28.3A
Power - Peak Pulse	600W
Operating Temperature Range	-65°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the P6SMB15A-M3/5B are qualified based on the following critical parameters:

Voltage - Reverse Standoff (Typ): 12.8V
Voltage - Breakdown (Min): 14.3V
Voltage - Clamping (Max) @ Ipp: 21.2V (primary tolerance: ±5%)
Package / Case: DO-214AA, SMB (mechanical and thermal compatibility)
Mounting Type: Surface Mount
Type: Zener, Unidirectional
RoHS Compliance: ROHS3 or equivalent

Substitutes are grouped into two categories:

Category 1: Direct Electrical & Mechanical Equivalents — Parts with identical voltage ratings, clamping voltage, and DO-214AA SMB package. These include packaging variants (Tape & Reel vs. Tape & Box) from the same or equivalent manufacturers.

Category 2: Functional Equivalents with Enhanced Specifications — Parts meeting or exceeding the voltage and clamping requirements with improved peak pulse current or power ratings, maintaining DO-214AA SMB package compatibility and operating temperature ranges suitable for the application.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ)	Vbr (Min)	Vc (Max)	Ipp (10/1000µs)	Power	Package	Temp Range	RoHS
P6SMB15A-M3/5B	Vishay	12.8V	14.3V	21.2V	28.3A	600W	DO-214AA (SMB)	-65°C ~ 150°C	ROHS3
P6SMB15A-E3/52	Vishay	12.8V	14.3V	21.2V	28.3A	600W	DO-214AA (SMB)	-65°C ~ 150°C	ROHS3
1KSMB15A	Taiwan Semiconductor Corporation	12.8V	14.3V	21.2V	47.2A	1000W	DO-214AA (SMB)	-55°C ~ 175°C	ROHS3
P6SMB15A (Eaton)	Eaton - Electronics Division	12.8V	14.3V	21.2V	28.8A	600W	DO-214AA (SMB)	-55°C ~ 150°C	RoHS
SM6T15A	STMicroelectronics	12.8V	14.3V	27.2V	147A (8/20µs)	600W	DO-214AA (SMB)	-55°C ~ 150°C	ROHS3
SM6T15AY	STMicroelectronics	12.8V	14.3V	27.2V	147A (8/20µs)	600W	DO-214AA (SMB)	-55°C ~ 150°C	ROHS3
SMBJP6KE15A-TP	Micro Commercial Co	12.8V	14.3V	21.2V	28.8A	600W	DO-214AA (SMB)	-55°C ~ 175°C	ROHS3
TPSMB15A	Littelfuse Inc.	12.8V	14.3V	21.2V	28.8A	600W	DO-214AA (SMB)	-65°C ~ 175°C	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Preferred for Pin-for-Pin Replacement):

P6SMB15A-E3/52 (Vishay) — Identical electrical specifications and temperature range to the P6SMB15A-M3/5B. The only difference is packaging format (Tape & Reel vs. Tape & Box). Both are ROHS3 compliant and Active status. This part is the primary equivalent for direct substitution.

SMBJP6KE15A-TP (Micro Commercial Co) and TPSMB15A (Littelfuse Inc.) — Both meet the core voltage and clamping specifications with equivalent peak pulse current (28.8A). TPSMB15A extends the operating temperature range to -65°C ~ 175°C and maintains ROHS3 compliance. Both are suitable for applications requiring the specified electrical performance.

Enhanced Performance Alternatives:

1KSMB15A (Taiwan Semiconductor Corporation) — Provides higher peak pulse current (47.2A) and power rating (1000W) while maintaining identical voltage specifications. Suitable for applications requiring greater transient energy absorption. Operating temperature range is -55°C ~ 175°C.

SM6T15A and SM6T15AY (STMicroelectronics) — Both feature higher clamping voltage (27.2V) and significantly higher peak pulse current (147A at 8/20µs pulse). SM6T15AY includes AEC-Q101 automotive qualification. These parts provide enhanced protection margins and are suitable for demanding transient suppression requirements.

Compliance & Status:

All substitute parts are Active status and ROHS3 compliant (or RoHS compliant). SM6T15AY carries AEC-Q101 automotive qualification. TPSMB15A carries AEC-Q101 automotive qualification. Selection should account for application-specific compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can P6SMB15A-E3/52 replace P6SMB15A-M3/5B directly?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (12.8V Vwm, 21.2V Vc, 28.3A Ipp). The difference is packaging format: M3/5B uses Tape & Box while E3/52 uses Tape & Reel. Electrical and thermal performance are equivalent.

Q: What is the difference between the STMicroelectronics SM6T15A and SM6T15AY?

A: Both parts have identical electrical specifications. SM6T15AY includes AEC-Q101 automotive qualification and is supplied on Tape & Reel. SM6T15A is supplied on Cut Tape & Digi-Reel. Select SM6T15AY for automotive applications requiring AEC-Q101 certification.

Q: Can I use 1KSMB15A as a substitute if my application requires higher transient energy absorption?

A: Yes. The 1KSMB15A maintains the same voltage ratings (12.8V Vwm, 21.2V Vc) but provides higher peak pulse current (47.2A) and power rating (1000W). It is suitable for applications requiring greater transient suppression capability. Operating temperature range is -55°C ~ 175°C.

Q: Are SM6T15A and SM6T15AY suitable substitutes for the P6SMB15A-M3/5B?

A: These parts are functional equivalents with enhanced specifications. They maintain the same reverse standoff voltage (12.8V) and breakdown voltage (14.3V) but have a higher clamping voltage (27.2V) and significantly higher peak pulse current (147A). Use these parts only if the application can tolerate the higher clamping voltage and benefits from enhanced transient protection.

Q: What packaging options are available for these substitute parts?

A: All substitute parts use the DO-214AA (SMB) surface mount package. Packaging formats vary: Tape & Reel (TR), Tape & Box (TB), and Cut Tape (CT) with Digi-Reel. Selection depends on procurement and assembly requirements. Electrical performance is independent of packaging format.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant or RoHS compliant. Verify specific compliance documentation for your application requirements.

Q: Can TPSMB15A be used in automotive applications?

A: Yes. TPSMB15A carries AEC-Q101 automotive qualification and is suitable for automotive applications. It maintains the core voltage specifications and extends the operating temperature range to -65°C ~ 175°C.

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