P6SMB56A-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB56A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 47.8V reverse standoff voltage range with a 77V maximum clamping voltage and 7.8A peak pulse current rating. The device is classified as Active product status and is 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
Voltage - Reverse Standoff (Typ)	47.8V
Voltage - Breakdown (Min)	53.2V
Voltage - Clamping (Max) @ Ipp	77V
Current - Peak Pulse (10/1000µs)	7.8A
Power - Peak Pulse	600W
Operating Temperature Range	-65°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB56A-M3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 47.8V
Voltage - Breakdown (Min): 53.2V
Voltage - Clamping (Max) @ Ipp: 77V
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB
Type: Zener
Unidirectional Channels: 1

Substitute parts must maintain identical voltage specifications and package form factor. Peak pulse current and power ratings may vary within acceptable operational margins. Packaging format (Tape & Box vs. Tape & Reel) does not affect electrical compatibility but impacts procurement and handling procedures.

Parameter Comparison

Parameter	P6SMB56A-M3/52 (Main)	P6SMB56A-E3/52	SMBJP6KE56A-TP	1KSMB56A	P6SMB56A (Eaton)
Manufacturer	Vishay	Vishay	Micro Commercial Co	Taiwan Semiconductor	Eaton
Voltage - Reverse Standoff (Typ)	47.8V	47.8V	47.8V	47.8V	47.8V
Voltage - Breakdown (Min)	53.2V	53.2V	53.2V	53.2V	53.2V
Voltage - Clamping (Max) @ Ipp	77V	77V	77V	77V	77V
Current - Peak Pulse (10/1000µs)	7.8A	7.8A	7.9A	13A	7.9A
Power - Peak Pulse	600W	600W	600W	1000W	600W
Operating Temperature Range	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Packaging Format	Tape & Box	Tape & Reel	Tape & Reel	Tape & Reel	Tape & Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain identical voltage specifications (47.8V reverse standoff, 53.2V breakdown minimum, 77V clamping maximum) and package form factor (DO-214AA, SMB surface mount). Selection among these parts is based on availability, packaging format preference, and operational temperature requirements.

P6SMB56A-E3/52 (Vishay) is a direct electrical equivalent with identical current and power ratings, differing only in packaging format (Tape & Reel vs. Tape & Box).

SMBJP6KE56A-TP (Micro Commercial Co) and P6SMB56A (Eaton) provide equivalent voltage performance with marginally higher peak pulse current (7.9A vs. 7.8A) and extended upper operating temperature range (-55°C to 175°C and -55°C to 150°C respectively).

1KSMB56A (Taiwan Semiconductor) offers enhanced current handling (13A peak pulse) and power dissipation (1000W), with extended operating temperature range (-55°C to 175°C), suitable for applications requiring higher transient energy absorption.

All parts maintain RoHS compliance and MSL 1 moisture sensitivity rating. Selection should account for procurement lead times, inventory availability, and specific application thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can P6SMB56A-E3/52 replace P6SMB56A-M3/52 directly?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications. The difference is packaging format: P6SMB56A-M3/52 is supplied in Tape & Box format, while P6SMB56A-E3/52 is supplied in Tape & Reel format. Electrical performance and PCB mounting are identical.

Q: What is the difference between the Vishay and Eaton versions of P6SMB56A?

A: Both maintain the same voltage ratings (47.8V standoff, 77V clamping) and package form factor. The Eaton version specifies a slightly higher peak pulse current (7.9A vs. 7.8A) and operates across a narrower temperature range (-55°C to 150°C vs. -65°C to 150°C for Vishay). Electrical substitution is valid for standard applications.

Q: When should 1KSMB56A be selected over P6SMB56A-M3/52?

A: The 1KSMB56A is selected when the application requires higher transient energy absorption. It provides 13A peak pulse current and 1000W power dissipation compared to 7.8A and 600W for the P6SMB56A-M3/52, while maintaining identical voltage clamping characteristics. Both operate in the same DO-214AA SMB package.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are RoHS compliant (ROHS3 or RoHS Compliant status). All maintain MSL 1 moisture sensitivity rating, indicating unlimited shelf life under controlled storage conditions.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not affect electrical substitution compatibility. The P6SMB56A-M3/52 operates from -65°C to 150°C. Substitute parts with extended ranges (-55°C to 175°C) are compatible and may offer advantages in high-temperature applications. Selection should match the specific thermal environment of the target application.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts use the identical DO-214AA SMB surface mount package. PCB footprints, solder pad layouts, and mounting procedures are identical. Packaging format (Tape & Box vs. Tape & Reel) affects handling and assembly procedures but not PCB compatibility.

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