P6SMB300A-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB300A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 256V reverse standoff voltage class with a 414V maximum clamping voltage and 1.45A peak pulse current rating. The device is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are necessary when the original part number becomes unavailable, when alternative packaging formats are required, or when sourcing from different manufacturers is preferred while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	256V
Voltage - Breakdown (Min)	285V
Voltage - Clamping (Max) @ Ipp	414V
Current - Peak Pulse (10/1000µs)	1.45A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-65°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB300A-M3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 256V
Voltage - Breakdown (Min): 285V
Voltage - Clamping (Max) @ Ipp: 414V
Current - Peak Pulse (10/1000µs): minimum 1.45A
Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant or equivalent
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed maintain these core electrical specifications and mechanical compatibility. Variations in peak pulse current above 1.45A, operating temperature ranges, and packaging formats (Tape & Reel versus Tape & Box) do not affect functional substitutability within the specified voltage and current parameters.

Parameter Comparison

Parameter	P6SMB300A-M3/52 (Vishay)	P6SMB300A (Eaton)	SMBJP6KE300A-TP (MCC)	SMBJP6KE300AL-TP (MCC)	TPSMB300A-A (Littelfuse)
Manufacturer	Vishay General Semiconductor	Eaton - Electronics Division	Micro Commercial Co	Micro Commercial Co	Littelfuse Inc.
Voltage - Reverse Standoff (Typ)	256V	256V	256V	256V	256V
Voltage - Breakdown (Min)	285V	285V	285V	285V	285V
Voltage - Clamping (Max) @ Ipp	414V	414V	414V	414V	414V
Current - Peak Pulse (10/1000µs)	1.45A	1.5A	1.5A	1.5A	1.5A
Power - Peak Pulse	600W	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature Range	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 175°C	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the P6SMB300A-M3/52 across the specified voltage, current, and thermal parameters. Selection among these alternatives should be based on the following factors:

P6SMB300A (Eaton): Direct equivalent with identical part number base. Packaging format is Tape & Reel (TR) versus the original Tape & Box (TB). RoHS compliant with MSL 1 rating. Operating temperature range is -55°C to 150°C.

SMBJP6KE300A-TP (Micro Commercial Co): Upgrade option with extended operating temperature range of -55°C to 175°C. ROHS3 compliant. Packaging is Tape & Reel (TR). Peak pulse current is 1.5A, exceeding the minimum requirement.

SMBJP6KE300AL-TP (Micro Commercial Co): Functionally equivalent to SMBJP6KE300A-TP with identical electrical specifications and extended temperature range. ROHS3 compliant. Packaging is Tape & Reel (TR).

TPSMB300A-A (Littelfuse): Manufacturer-recommended substitute with AEC-Q101 automotive qualification. Operating temperature range matches the original at -65°C to 150°C. ROHS3 compliant. Packaging is Tape & Reel (TR). Suitable for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher peak pulse current rating than the original?

A: Yes. The substitute parts listed with 1.5A peak pulse current exceed the original 1.45A specification. Higher current ratings provide equivalent or improved performance within the same voltage and thermal parameters.

Q: What is the difference between Tape & Box (TB) and Tape & Reel (TR) packaging?

A: Tape & Box packaging supplies components in tape format within a protective box, typically for smaller quantities. Tape & Reel packaging supplies components on continuous reels, typically for higher-volume manufacturing. Both formats contain identical components; the difference is in handling and storage format.

Q: Are all substitute parts RoHS3 compliant?

A: Four of the five parts listed are ROHS3 compliant. The Eaton P6SMB300A is RoHS compliant. Both certifications meet environmental and hazardous substance restrictions for electronic components.

Q: Which substitute part should I select for automotive applications?

A: The TPSMB300A-A from Littelfuse carries AEC-Q101 automotive qualification and is specifically recommended for automotive-grade applications.

Q: Do operating temperature range differences affect substitutability?

A: Operating temperature range differences do not affect electrical substitutability if your application operates within the overlapping temperature range. The original part operates from -65°C to 150°C. Substitute parts with ranges of -55°C to 150°C or -55°C to 175°C are compatible for applications within -55°C to 150°C. For applications below -55°C, select parts with -65°C minimum rating.

Q: Are all substitute parts in the same DO-214AA SMB package?

A: Yes. All substitute parts use the DO-214AA (SMB) package format, ensuring mechanical and footprint compatibility with the original design.

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