P6SMB10C Equivalent & Substitute Parts

Part Overview

The P6SMB10C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a reverse standoff voltage of 8.55V and provides clamping at 15.23V with a peak pulse current rating of 42.1A. The P6SMB10C is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMB10C
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	8.55V
Voltage - Breakdown (Min)	9V
Voltage - Clamping (Max) @ Ipp	15.23V
Current - Peak Pulse (10/1000µs)	42.1A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the P6SMB10C is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 8.5V to 8.55V
Voltage - Clamping (Max) @ Ipp: 14.4V to 15.23V
Current - Peak Pulse (10/1000µs): 41A to 42.1A
Power - Peak Pulse: 600W minimum
Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1

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

Group A (Tighter Clamping Voltage): Parts with clamping voltage between 14.4V and 14.5V, including P6SMB10CA, SMBJ8.5CA, P6SMB10CA-M3/52, P6SMB10CA-M3/5B, SM6T10CA-E3/52, and SM6T10CA-E3/5B.

Group B (Higher Clamping Voltage): Parts with clamping voltage at 18.6V, including SM6T10CA and SM6T10CAY. These provide additional voltage margin but may not be suitable for applications requiring strict clamping voltage limits.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature	Product Status
P6SMB10C	Littelfuse Inc.	8.55V	9V	15.23V	42.1A	600W	DO-214AA, SMB	-55°C ~ 150°C	Obsolete
P6SMB10CA	Eaton - Electronics Division	8.55V	9.5V	14.5V	42.1A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMBJ8.5CA	EVVO Semi	8.5V	9.44V	14.4V	41.7A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
P6SMB10CA-M3/52	Vishay General Semiconductor - Diodes Division	8.55V	9.5V	14.5V	41.4A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
P6SMB10CA-M3/5B	Vishay General Semiconductor - Diodes Division	8.55V	9.5V	14.5V	41.4A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SM6T10CA	STMicroelectronics	8.55V	9.5V	18.6V	215A (8/20µs)	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SM6T10CA-E3/52	Vishay General Semiconductor - Diodes Division	8.55V	9.5V	14.5V	41A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SM6T10CA-E3/5B	Vishay General Semiconductor - Diodes Division	8.55V	9.5V	14.5V	41A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SM6T10CAY	STMicroelectronics	8.55V	9.5V	18.6V	215A (8/20µs)	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMB8J8.5CA-E3/52	Vishay General Semiconductor - Diodes Division	8.5V	9.44V	14.4V	55.6A	800W	DO-214AA, SMB	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Primary Recommendation: P6SMB10CA (Eaton - Electronics Division) or SM6T10CA-E3/52 (Vishay General Semiconductor - Diodes Division) are the most direct substitutes for the obsolete P6SMB10C. Both maintain the 8.55V reverse standoff voltage, operate within the -55°C to -65°C temperature range, and are classified as active products with full RoHS3 compliance.

Secondary Recommendation: SMBJ8.5CA (EVVO Semi) provides an alternative with marginally lower reverse standoff voltage (8.5V) and clamping voltage (14.4V), suitable for applications with less stringent voltage specifications. This part extends the operating temperature range to -65°C.

Higher Current Alternative: SMB8J8.5CA-E3/52 (Vishay General Semiconductor - Diodes Division) offers increased peak pulse current (55.6A) and power dissipation (800W) compared to the original P6SMB10C, providing additional design margin for high-energy transient events.

Automotive Grade Option: SM6T10CAY (STMicroelectronics) is qualified to AEC-Q101 automotive standards and provides the same reverse standoff voltage with higher clamping voltage (18.6V) and peak pulse current (215A at 8/20µs), suitable for automotive applications requiring enhanced transient protection.

All recommended substitutes are active products with current manufacturing status and full compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can I use SM6T10CA or SM6T10CAY as direct replacements for P6SMB10C?

A: SM6T10CA and SM6T10CAY have higher clamping voltages (18.6V) compared to the P6SMB10C (15.23V). These parts are suitable only if your circuit design tolerates the higher clamping voltage. They provide additional voltage margin and higher peak pulse current (215A at 8/20µs) compared to the original 42.1A specification.

Q: What is the difference between P6SMB10CA and SM6T10CA-E3/52?

A: Both parts maintain the 8.55V reverse standoff voltage and 14.5V clamping voltage. The primary difference is the peak pulse current specification: P6SMB10CA provides 42.1A, while SM6T10CA-E3/52 provides 41A. Both are suitable substitutes for the P6SMB10C in general-purpose applications.

Q: Are all substitute parts RoHS compliant?

A: Yes, all substitute parts listed are RoHS3 compliant, meeting environmental and regulatory requirements equivalent to or exceeding the original P6SMB10C specification.

Q: Can I use SMBJ8.5CA if my design requires 8.55V reverse standoff voltage?

A: SMBJ8.5CA has a reverse standoff voltage of 8.5V, which is 0.05V lower than the P6SMB10C specification of 8.55V. This part is suitable only if your circuit design tolerates this voltage tolerance. The clamping voltage (14.4V) is also slightly lower than the original (15.23V).

Q: What packaging options are available for these substitutes?

A: All substitute parts use DO-214AA (SMB) surface-mount packaging, identical to the original P6SMB10C. Packaging options vary by manufacturer and include Tape & Reel (TR), Cut Tape (CT), and Tape & Box (TB) configurations for different procurement and assembly requirements.

Q: Which substitute offers the widest operating temperature range?

A: SMBJ8.5CA, P6SMB10CA-M3/52, P6SMB10CA-M3/5B, SM6T10CA-E3/52, and SM6T10CA-E3/5B all operate from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the original P6SMB10C (-

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