P6SMB7.5A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB7.5A-M3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 6.4V reverse standoff voltage class and provides transient protection for general-purpose applications. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	6.4	V
Voltage - Breakdown (Min)	7.13	V
Voltage - Clamping (Max) @ Ipp	11.3	V
Current - Peak Pulse (10/1000µs)	53.1	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65°C ~ 150°C	TJ
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 6.4V
Voltage - Breakdown (Min): 7.13V
Package / Case: DO-214AA, SMB (surface mount)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Type: Zener (unidirectional)

Substitute parts are grouped into two categories based on clamping voltage performance:

Category A (Matched Clamping Voltage): Parts with Voltage - Clamping (Max) @ Ipp of 11.3V maintain identical transient suppression characteristics to the main part.

Category B (Higher Clamping Voltage): Parts with Voltage - Clamping (Max) @ Ipp of 14.5V provide increased clamping voltage, suitable for applications tolerating higher transient peaks.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature	RoHS Status
P6SMB7.5A-M3/5B	Vishay	6.4V	7.13V	11.3V	53.1A	600W	DO-214AA (SMBJ)	-65°C ~ 150°C	ROHS3
P6SMB7.5A-E3/52	Vishay	6.4V	7.13V	11.3V	53.1A	600W	DO-214AA (SMB)	-65°C ~ 150°C	ROHS3
P6SMB7.5A	Taiwan Semiconductor Corporation	6.4V	7.13V	11.3V	55A	600W	DO-214AA (SMB)	-55°C ~ 150°C	ROHS3
SM6T7V5A	STMicroelectronics	6.4V	7.13V	14.5V	276A (8/20µs)	600W	DO-214AA (SMB)	-55°C ~ 150°C	ROHS3
SM6T7V5AY	STMicroelectronics	6.4V	7.13V	14.5V	276A (8/20µs)	600W	DO-214AA (SMB)	-55°C ~ 150°C	ROHS3
SMBJP6KE7.5A-TP	Micro Commercial Co	6.4V	7.13V	11.3V	54A	600W	DO-214AA (SMBJ)	-55°C ~ 175°C	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Performance):

P6SMB7.5A-E3/52 (Vishay) and SMBJP6KE7.5A-TP (Micro Commercial Co) are direct substitutes with matching clamping voltage (11.3V) and peak pulse current specifications. Both maintain ROHS3 compliance and Active product status. The primary difference is packaging format: P6SMB7.5A-E3/52 uses Tape & Reel (TR) while SMBJP6KE7.5A-TP uses Tape & Reel (TR) with extended operating temperature range (-55°C ~ 175°C).

Functionally Equivalent Substitutes (Matched Voltage Class):

P6SMB7.5A (Taiwan Semiconductor Corporation) maintains identical voltage specifications and clamping performance with slightly higher peak pulse current (55A vs 53.1A). Operating temperature range is -55°C ~ 150°C. This part is suitable for applications where the lower temperature limit of -55°C is acceptable.

Alternative Substitutes (Higher Clamping Voltage):

SM6T7V5A and SM6T7V5AY (STMicroelectronics) operate in the same 6.4V reverse standoff voltage class but provide higher clamping voltage (14.5V) and significantly higher peak pulse current (276A at 8/20µs). These parts are suitable only for applications where higher transient voltage peaks are acceptable. SM6T7V5AY includes AEC-Q101 automotive qualification.

All substitute parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and Active product status.

Frequently Asked Questions (FAQ)

Q: Can P6SMB7.5A-E3/52 replace P6SMB7.5A-M3/5B directly?

A: Yes. Both parts share identical electrical specifications: 6.4V reverse standoff, 7.13V breakdown minimum, and 11.3V clamping voltage. The difference is packaging format (Tape & Reel vs Tape & Box). Both are ROHS3 compliant and Active status.

Q: What is the difference between the Vishay P6SMB7.5A-M3/5B and Taiwan Semiconductor P6SMB7.5A?

A: Electrical performance is equivalent across all critical parameters. The Taiwan Semiconductor part has a lower operating temperature minimum (-55°C vs -65°C) and slightly higher peak pulse current (55A vs 53.1A). Selection depends on application temperature requirements.

Q: Why do SM6T7V5A and SM6T7V5AY have higher clamping voltage?

A: These STMicroelectronics parts are designed for higher transient energy absorption with 14.5V clamping voltage versus 11.3V for the main part. They are not direct substitutes but alternatives for applications requiring higher voltage suppression margins.

Q: Is SM6T7V5AY suitable for automotive applications?

A: SM6T7V5AY carries AEC-Q101 automotive qualification and is rated for -55°C ~ 150°C operating temperature. It is suitable for automotive-grade applications requiring higher clamping voltage performance.

Q: What packaging formats are available?

A: All substitute parts use DO-214AA (SMB) surface mount package. Variants include Tape & Box (TB), Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel® formats. Package selection depends on procurement and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited).

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