P6SMBJ150 Equivalent & Substitute Parts

Part Overview

The P6SMBJ150 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 128V reverse standoff voltage, 217.35V maximum clamping voltage, and 600W peak pulse power rating in a DO-214AA (SMB) package. 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	P6SMBJ150
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	128V
Voltage - Breakdown (Min)	135.45V
Voltage - Clamping (Max) @ Ipp	217.35V
Current - Peak Pulse (10/1000µs)	2.9A
Power - Peak Pulse	600W
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the P6SMBJ150 are qualified based on the following critical parameters that must align with the original component:

Unidirectional channel configuration (1 channel required)
Reverse standoff voltage: 128V (typical)
Breakdown voltage minimum: within acceptable range (135.45V to 143V)
Clamping voltage maximum @ Ipp: 207V to 217.35V
Peak pulse current: 2.9A to 15A (10/1000µs or 8/20µs)
Power dissipation: 600W peak pulse
Package type: DO-214AA (SMB) surface mount
Operating temperature range: -55°C to -65°C minimum, 150°C maximum
RoHS3 compliance and MSL 1 rating

Five active substitute parts meet these criteria and are available from multiple manufacturers including Good-Ark Semiconductor, Littelfuse Inc., STMicroelectronics, Vishay, and Comchip Technology.

Parameter Comparison

Parameter	P6SMBJ150	P6SMB150A	SZP6SMB150AT3G	SM6T150A	SM6T150A-E3/52	TVP06B151A-G
Manufacturer	Littelfuse Inc.	Good-Ark Semiconductor	Littelfuse Inc.	STMicroelectronics	Vishay	Comchip Technology
Product Status	Obsolete	Active	Active	Active	Active	Active
Type	Zener	Zener	Zener	Zener	Zener	Zener
Unidirectional Channels	1	1	1	1	1	1
Voltage - Reverse Standoff (Typ)	128V	128V	128V	128V	128V	128V
Voltage - Breakdown (Min)	135.45V	143V	143V	143V	143V	142.5V
Voltage - Clamping (Max) @ Ipp	217.35V	207V	207V	265V	207V	207V
Current - Peak Pulse (10/1000µs)	2.9A	2.9A	2.9A	15A (8/20µs)	2.9A	2.9A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All five substitute parts are active products with ROHS3 compliance and MSL 1 ratings, making them suitable replacements for the obsolete P6SMBJ150.

P6SMB150A (Good-Ark Semiconductor) and SM6T150A-E3/52 (Vishay) provide the closest electrical match with 207V clamping voltage and 2.9A peak pulse current. Both maintain the standard -55°C to -65°C operating temperature range. P6SMB150A offers high inventory availability (41,700 pcs) with standard packaging options. SM6T150A-E3/52 extends the lower temperature limit to -65°C and includes automotive-grade qualification (AEC-Q101).

SZP6SMB150AT3G (Littelfuse Inc.) maintains the original manufacturer lineage with identical electrical specifications and automotive-grade qualification. The extended temperature range (-65°C to 150°C) provides additional margin for demanding applications.

SM6T150A (STMicroelectronics) differs in peak pulse current specification (15A at 8/20µs versus 2.9A at 10/1000µs) and clamping voltage (265V), representing a higher-performance variant suitable for applications requiring enhanced transient suppression capability.

TVP06B151A-G (Comchip Technology) provides equivalent performance with 207V clamping voltage and 2.9A peak pulse current, with lower inventory availability (1,088 pcs).

Frequently Asked Questions (FAQ)

Q: Can I use SM6T150A as a direct replacement for P6SMBJ150?

A: SM6T150A is electrically compatible but represents a higher-performance variant. It features 265V clamping voltage (versus 217.35V) and 15A peak pulse current (versus 2.9A at different pulse duration). This part is suitable for applications requiring enhanced transient suppression but may not be necessary for designs validated with the original 217.35V specification.

Q: What is the difference between the clamping voltage specifications?

A: The P6SMBJ150 specifies 217.35V maximum clamping at Ipp, while most substitutes specify 207V. This 10V difference falls within acceptable design margins for general-purpose overvoltage protection. Designs requiring the original 217.35V specification should reference SM6T150A (265V) or confirm circuit tolerance with the substitute part's 207V rating.

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

A: Yes, all substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: Which substitute offers the best temperature performance?

A: SZP6SMB150AT3G and SM6T150A-E3/52 both extend the lower operating temperature limit to -65°C (versus -55°C for the original), providing additional thermal margin for applications in extreme environments.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes, all five substitute parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), matching the original P6SMBJ150 environmental specifications.

Q: Which substitute has the highest inventory availability?

A: P6SMB150A from Good-Ark Semiconductor offers the highest inventory (41,700 pcs), followed by SM6T150A from STMicroelectronics (36,450 pcs).

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