P6SMBJ8.2 Transient Voltage Suppressor (TVS) Equivalent & Substitute Parts

Part Overview

The P6SMBJ8.2 is a unidirectional Zener-type transient voltage suppressor manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 7.02V reverse standoff voltage and 12.71V maximum clamping voltage with 50.4A peak pulse current capability in a DO-214AA (SMB) package. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for design continuity and procurement planning.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	7.02	V
Voltage - Breakdown (Min)	7.38	V
Voltage - Clamping (Max) @ Ipp	12.71	V
Current - Peak Pulse (10/1000µs)	50.4	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AA, SMB	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMBJ8.2 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 7.0V to 7.02V
Voltage - Clamping (Max) @ Ipp: 12.0V to 12.71V
Current - Peak Pulse (10/1000µs): 50A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB
Type: Zener, unidirectional
Operating Temperature: Minimum -55°C to maximum 150°C

All substitute parts listed maintain these electrical and mechanical parameters within acceptable engineering tolerances for direct replacement in the same circuit application. Packaging format (Tape & Reel, Bulk, or standard) does not affect electrical equivalence but may impact procurement and assembly processes.

Parameter Comparison

Parameter	P6SMBJ8.2 (Littelfuse)	P6SMB8.2A (Taiwan Semiconductor)	SMBJ7.0A (MDD)	SMBJ7.0A-TP (Micro Commercial Co)	SMBJ7V0A (Fairchild)
Voltage - Reverse Standoff (Typ)	7.02V	7.02V	7V	7V	7V
Voltage - Breakdown (Min)	7.38V	7.79V	7.78V	7.78V	7.78V
Voltage - Clamping (Max) @ Ipp	12.71V	12.1V	12V	12V	12V
Current - Peak Pulse (10/1000µs)	50.4A	52A	50A	50A	50A
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-50 to 150°C	-55 to 175°C	-55 to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Type	Zener	Zener	Zener	Zener	Zener
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All four substitute parts are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete P6SMBJ8.2. Each substitute maintains ROHS3 compliance and meets the electrical specifications required for direct circuit replacement.

P6SMB8.2A (Taiwan Semiconductor Corporation) provides the closest electrical match with identical reverse standoff voltage (7.02V) and is available in Tape & Reel packaging, suitable for automated assembly processes. This part is recommended as the primary substitute when procurement volume and assembly automation are considerations.

SMBJ7.0A (MDD), SMBJ7.0A-TP (Micro Commercial Co), and SMBJ7V0A (Fairchild Semiconductor) operate at 7V reverse standoff voltage with 12V clamping voltage, representing a minor reduction in clamping voltage (0.71V lower than the original) while maintaining 50A peak pulse current. These alternatives are suitable for applications where the slightly lower clamping voltage remains within system design margins. SMBJ7.0A-TP offers the widest operating temperature range (-55 to 175°C) and is available in Tape & Reel format. SMBJ7V0A is available in Bulk packaging for high-volume procurement.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the P6SMBJ8.2?

A: Yes. All listed substitute parts meet the critical electrical parameters (reverse standoff voltage, clamping voltage, peak pulse current, and power dissipation) and share the same DO-214AA (SMB) package. They are electrically and mechanically compatible for direct circuit substitution.

Q: What is the difference between the clamping voltages in the substitute parts?

A: The P6SMBJ8.2 has a maximum clamping voltage of 12.71V. The substitute parts (P6SMB8.2A, SMBJ7.0A, SMBJ7.0A-TP, SMBJ7V0A) have clamping voltages ranging from 12.0V to 12.1V. This represents a 0.6V to 0.71V reduction. Circuit designs must confirm that this lower clamping voltage remains within acceptable system protection thresholds.

Q: Does packaging format (Tape & Reel vs. Bulk) affect electrical performance?

A: No. Packaging format affects only procurement and assembly logistics. Tape & Reel packaging is optimized for automated pick-and-place assembly, while Bulk packaging is suitable for manual assembly or lower-volume applications. Electrical performance is identical regardless of packaging format.

Q: Which substitute part has the best temperature range coverage?

A: SMBJ7.0A-TP (Micro Commercial Co) offers the widest operating temperature range of -55°C to 175°C, compared to -55°C to 150°C for most alternatives. This extended upper temperature limit may be advantageous in high-temperature application environments.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original P6SMBJ8.2.

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