Equivalent & Substitute Parts for P6SMB100C

Part Overview

The P6SMB100C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 85.5V reverse standoff voltage with 143.85V maximum clamping voltage at peak pulse current. This bidirectional zener diode is housed in a DO-214AA (SMB) surface mount package and is designed for general-purpose transient voltage suppression applications. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	85.5V
Voltage - Breakdown (Min)	90V
Voltage - Clamping (Max) @ Ipp	143.85V
Current - Peak Pulse (10/1000µs)	4.5A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the P6SMB100C is determined by the following critical parameters:

Voltage - Reverse Standoff: 85.5V (±tolerance)
Voltage - Clamping (Max) @ Ipp: 137V to 143.85V range
Current - Peak Pulse (10/1000µs): 4.4A to 4.5A
Power - Peak Pulse: 600W
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Operating Temperature: -55°C minimum to 150°C maximum
RoHS Status: ROHS3 Compliant

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

Group 1 (137V Clamping): P6SMB100CA, P6SMB100CA-E3/5B, P6SMB100CA-M3/52, P6SMB100CA-M3/5B, SM6T100CA-E3/5B, SMBJ85CA, SMBJ85CAE3/TR13, SMBJP6KE100CA-TP

Group 2 (178V Clamping): SM6T100CA

All substitute parts maintain the same reverse standoff voltage, package configuration, power rating, and compliance certifications as the original P6SMB100C.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
P6SMB100C	Littelfuse Inc.	85.5V	90V	143.85V	4.5A	600W	-55°C ~ 150°C	DO-214AA, SMB	Obsolete
P6SMB100CA	Good-Ark Semiconductor	85.5V	95V	137V	4.4A	600W	-55°C ~ 150°C	DO-214AA, SMB	Active
SMBJ85CA	Meritek	85V	94.4V	137V	4.38A	600W	-55°C ~ 150°C	DO-214AA, SMB	Active
P6SMB100CA-E3/5B	Vishay General Semiconductor - Diodes Division	85.5V	95V	137V	4.4A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
P6SMB100CA-M3/52	Vishay General Semiconductor - Diodes Division	85.5V	95V	137V	4.4A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
P6SMB100CA-M3/5B	Vishay General Semiconductor - Diodes Division	85.5V	95V	137V	4.4A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
SM6T100CA	STMicroelectronics	85.5V	95V	178V	22.5A (8/20µs)	600W	-55°C ~ 150°C	DO-214AA, SMB	Active
SM6T100CA-E3/5B	Vishay General Semiconductor - Diodes Division	85.5V	95V	137V	4.4A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJ85CAE3/TR13	Microchip Technology	85V	94.4V	137V	4.4A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJP6KE100CA-TP	Micro Commercial Co	85.5V	95V	137V	4.5A	600W	-55°C ~ 175°C	DO-214AA, SMB	Active

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original P6SMB100C specifications. All substitute parts are currently in active production status, ensuring long-term availability and supply chain stability.

For applications requiring clamping voltage performance within 137V to 143.85V range, substitute parts P6SMB100CA, P6SMB100CA-E3/5B, P6SMB100CA-M3/52, P6SMB100CA-M3/5B, SM6T100CA-E3/5B, SMBJ85CA, SMBJ85CAE3/TR13, and SMBJP6KE100CA-TP are functionally equivalent. These parts maintain identical reverse standoff voltage, power dissipation capability, and package configuration.

SM6T100CA exhibits higher peak pulse current capability (22.5A at 8/20µs pulse) and elevated clamping voltage (178V), making it suitable for applications requiring enhanced transient suppression performance beyond the original specification.

Vishay General Semiconductor variants (P6SMB100CA-E3/5B, P6SMB100CA-M3/52, P6SMB100CA-M3/5B, SM6T100CA-E3/5B) and Microchip Technology SMBJ85CAE3/TR13 offer extended operating temperature range to -65°C, providing additional thermal margin for demanding environments.

Frequently Asked Questions (FAQ)

Q: Can P6SMB100CA directly replace P6SMB100C?

A: Yes. P6SMB100CA maintains identical reverse standoff voltage (85.5V), power rating (600W), package configuration (DO-214AA SMB), and operating temperature range (-55°C to 150°C). The clamping voltage is 137V compared to 143.85V in the original, representing a 4.8% reduction within acceptable design margins for general-purpose transient suppression.

Q: What is the difference between Group 1 and Group 2 substitute parts?

A: Group 1 parts (137V clamping) provide direct functional equivalence to the P6SMB100C with minor clamping voltage variation. Group 2 (SM6T100CA at 178V clamping) offers enhanced transient suppression capability with significantly higher peak pulse current (22.5A versus 4.5A), suitable for applications requiring superior overvoltage protection.

Q: Are all substitute parts available in the same packaging?

A: Yes. All substitute parts use DO-214AA (SMB) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts. Packaging variants (Tape & Reel, Tape & Box, Cut Tape) differ only in supply format and do not affect component performance or mounting.

Q: Which substitute part offers the widest operating temperature range?

A: Vishay General Semiconductor variants (P6SMB100CA-E3/5B, P6SMB100CA-M3/52, P6SMB100CA-M3/5B, SM6T100CA-E3/5B) and Microchip Technology SMBJ85CAE3/TR13 operate from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the original P6SMB100C specification.

Q: Is SMBJP6KE100CA-TP suitable for high-temperature applications?

A: SMBJP6KE100CA-TP operates to 175°C junction temperature, exceeding the original P6SMB100C maximum of 150°C by 25°C. This part is suitable for applications requiring elevated thermal performance while maintaining all other electrical specifications.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory requirements of the original P6SMB100C.

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