P6SMBJ7.5 Equivalent & Substitute Parts

Part Overview

The P6SMBJ7.5 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 6.4V reverse standoff voltage and 600W peak pulse power rating. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMBJ7.5
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	6.4V
Voltage - Breakdown (Min)	6.75V
Voltage - Clamping (Max) @ Ipp	11.87V
Current - Peak Pulse (10/1000µs)	54A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the P6SMBJ7.5 is determined by the following critical parameters:

Reverse standoff voltage: 6.4V (Typ)
Breakdown voltage minimum: 6.75V to 7.13V range
Unidirectional configuration (1 channel)
DO-214AA (SMB) surface mount package
600W peak pulse power rating
General-purpose application classification
ROHS3 compliance

The substitute parts listed below maintain these core electrical and mechanical specifications, ensuring functional equivalence in transient voltage suppression circuits. Variations in clamping voltage and peak pulse current are noted where they occur, as these parameters may affect circuit performance in specific applications.

Parameter Comparison

Parameter	P6SMBJ7.5	P6SMB7.5A (TSC)	SMBJP6KE7.5A-TP (MCC)	SM6T7V5A (STM)	SM6T7V5A-E3/52 (Vishay)	SM6T7V5AY (STM)
Manufacturer	Littelfuse Inc.	Taiwan Semiconductor	Micro Commercial Co	STMicroelectronics	Vishay	STMicroelectronics
Voltage - Reverse Standoff (Typ)	6.4V	6.4V	6.4V	6.4V	6.4V	6.4V
Voltage - Breakdown (Min)	6.75V	7.13V	7.13V	7.13V	7.13V	7.13V
Voltage - Clamping (Max) @ Ipp	11.87V	11.3V	11.3V	14.5V	11.3V	14.5V
Current - Peak Pulse (10/1000µs)	54A	55A	54A	276A (8/20µs)	53A	276A (8/20µs)
Power - Peak Pulse	600W	600W	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMBJ	DO-214AA, SMB	DO-214AA, SMBJ	DO-214AA, SMB
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete P6SMBJ7.5.

P6SMB7.5A (Taiwan Semiconductor Corporation) and SM6T7V5A-E3/52 (Vishay) provide the closest electrical match to the original part, with clamping voltages of 11.3V and peak pulse currents between 53A and 55A. These parts are recommended for direct substitution in applications where the original 11.87V clamping specification is not a critical design constraint.

SMBJP6KE7.5A-TP (Micro Commercial Co) offers an extended operating temperature range to 175°C, providing additional thermal margin in high-temperature environments while maintaining equivalent electrical performance.

SM6T7V5A (STMicroelectronics) and SM6T7V5AY (STMicroelectronics) feature higher clamping voltages (14.5V) and significantly higher peak pulse current ratings (276A at 8/20µs pulse width). These parts are suitable for applications requiring enhanced transient suppression capability. SM6T7V5AY includes AEC-Q101 automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can I use SM6T7V5A or SM6T7V5AY as direct replacements for P6SMBJ7.5?

A: These parts share the same 6.4V reverse standoff voltage, DO-214AA package, and 600W power rating. However, their higher clamping voltage (14.5V vs. 11.87V) and peak pulse current (276A vs. 54A) mean they provide stronger transient suppression. They are functionally compatible but will clamp at higher voltages. Verify your circuit design can tolerate this difference.

Q: What is the difference between the SMB and SMBJ package designations?

A: Both refer to the DO-214AA surface mount package. The designations are manufacturer-specific nomenclature. All parts listed use the same physical DO-214AA package and are mechanically interchangeable.

Q: Which substitute offers the best thermal performance?

A: SMBJP6KE7.5A-TP (Micro Commercial Co) supports operating temperatures up to 175°C, compared to 150°C for most other substitutes. SM6T7V5A-E3/52 (Vishay) extends the lower temperature limit to -65°C, providing a wider overall operating range.

Q: Are all substitutes available in the same packaging format?

A: Most are available in Tape & Reel (TR) format for automated assembly. Verify packaging availability with your supplier, as some parts may also be available in Cut Tape (CT) or other formats.

Q: Why do some substitutes have different peak pulse current ratings?

A: Peak pulse current is measured under different pulse width conditions. SM6T7V5A and SM6T7V5AY are rated at 276A under 8/20µs pulses, while others are rated at 53-55A under 10/1000µs pulses. These represent different transient event profiles and do not indicate incompatibility.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message