P6SMB82AT3G Equivalent & Substitute Parts

Part Overview

The P6SMB82AT3G is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., classified as a unidirectional Zener-type device in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a reverse standoff voltage of 70.1V and clamping voltage of 113V at peak pulse current. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	70.1V
Breakdown Voltage (Min)	77.9V
Clamping Voltage (Max) @ Ipp	113V
Peak Pulse Current (10/1000µs)	5.3A
Peak Pulse Power	600W
Package / Case	DO-214AA, SMB
Operating Temperature Range	-65°C ~ 150°C (TJ)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the P6SMB82AT3G is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Reverse Standoff Voltage: 70V to 70.1V
Breakdown Voltage (Min): 77.8V to 77.9V
Clamping Voltage (Max) @ Ipp: 113V
Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Unidirectional Channels: 1

Acceptable Variation Ranges:

Peak Pulse Current: 5.3A to 8.8A (higher current ratings provide equivalent or superior performance)
Operating Temperature: Minimum -55°C to -65°C; Maximum 150°C to 175°C
Peak Pulse Power: 600W to 1000W (higher power ratings are acceptable)

Substitute parts must maintain electrical compatibility within these defined parameters. Parts with identical voltage specifications and package form factors are direct substitutes. Parts with higher current or power ratings remain functionally compatible for the same voltage suppression application.

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (Typ)	Breakdown Voltage (Min)	Clamping Voltage (Max)	Peak Pulse Current	Peak Pulse Power	Operating Temp Range	Package	Product Status
P6SMB82AT3G	Littelfuse Inc.	70.1V	77.9V	113V	5.3A	600W	-65°C ~ 150°C	DO-214AA, SMB	Obsolete
P6SMB82A	Eaton - Electronics Division	70.1V	77.9V	113V	5.4A	600W	-55°C ~ 150°C	DO-214AA, SMB	Active
SZP6SMB82AT3G	Littelfuse Inc.	70.1V	77.9V	113V	5.3A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
P6SMB82A-E3/52	Vishay General Semiconductor - Diodes Division	70.1V	77.9V	113V	5.3A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
1KSMB82A	Taiwan Semiconductor Corporation	70.1V	77.9V	113V	8.8A	1000W	-55°C ~ 175°C	DO-214AA, SMB	Active
SMBJ70A	MDD	70V	77.8V	113V	5.3A	600W	-50°C ~ 150°C	DO-214AA, SMB	Active
SMBJ70A-TR	STMicroelectronics	70V	77.8V	113V	5.5A	600W	-55°C ~ 150°C	DO-214AA, SMB	Active
SMBJ70AE3/TR13	Microchip Technology	70V	77.8V	113V	5.3A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJP6KE82A-TP	Micro Commercial Co	70.1V	77.9V	113V	5.4A	600W	-55°C ~ 175°C	DO-214AA, SMB	Active

Engineering Selection Recommendations

Primary Substitute (Highest Compatibility): SZP6SMB82AT3G (Littelfuse Inc.) maintains identical electrical specifications and operating temperature range to the obsolete P6SMB82AT3G. This part is manufactured by the original supplier and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Secondary Substitutes (Equivalent Electrical Performance): P6SMB82A-E3/52 (Vishay General Semiconductor) and P6SMB82A (Eaton - Electronics Division) provide equivalent voltage and power specifications with minor variations in peak pulse current (5.3A to 5.4A). Both are active products with ROHS3 compliance.

Enhanced Performance Alternatives: 1KSMB82A (Taiwan Semiconductor Corporation) offers higher peak pulse current (8.8A) and peak pulse power (1000W) while maintaining identical voltage specifications. This part supports extended operating temperature range (-55°C to 175°C) and is suitable for applications requiring higher transient energy absorption.

Broad Compatibility Substitutes: SMBJ70A series parts (MDD, STMicroelectronics, Microchip Technology) provide equivalent voltage suppression with minor standoff voltage tolerance (70V vs. 70.1V) and breakdown voltage tolerance (77.8V vs. 77.9V). All SMBJ70A variants are active products with ROHS3 compliance and support general-purpose applications.

All substitute parts maintain DO-214AA (SMB) surface mount package compatibility and unidirectional Zener diode topology. Selection should be based on application temperature requirements, available inventory, and supplier qualification status.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher peak pulse current than the original P6SMB82AT3G?

A: Yes. Parts such as 1KSMB82A with 8.8A peak pulse current are functionally compatible. Higher current ratings provide equivalent or superior transient suppression capability at the same voltage levels. The application circuit will draw only the current required for the transient event.

Q: What is the difference between P6SMB82A and SMBJ70A series parts?

A: Both maintain the same 113V clamping voltage and 600W peak pulse power. The primary differences are manufacturer, standoff voltage tolerance (70.1V vs. 70V), and breakdown voltage tolerance (77.9V vs. 77.8V). These tolerances remain within acceptable substitution parameters for transient voltage suppression applications.

Q: Is the SZP6SMB82AT3G a direct replacement for the obsolete P6SMB82AT3G?

A: Yes. SZP6SMB82AT3G is manufactured by Littelfuse Inc. and maintains identical electrical specifications, operating temperature range (-65°C to 150°C), and package form factor. This part includes AEC-Q101 automotive qualification.

Q: Can I substitute a part with a lower operating temperature minimum (e.g., -55°C instead of -65°C)?

A: Substitution is acceptable if your application does not require operation below -55°C. Verify the minimum operating temperature requirement of your specific circuit design before selecting a substitute part.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory status of the original P6SMB82AT3G.

Q: What packaging options are available for substitute parts?

A: All substitute parts are supplied in DO-214AA (SMB) surface mount package. Packaging formats include Tape & Reel (TR), Cut Tape (CT), and Digi-Reel options depending on manufacturer and distributor. Verify packaging availability with your component supplier.

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