P6SMB13C Equivalent & Substitute Parts

Part Overview

The P6SMB13C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This bidirectional Zener diode operates with a reverse standoff voltage of 11.1V and provides peak pulse current handling of 34.6A at a clamping voltage of 19.11V. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	11.1V
Breakdown Voltage (Min)	11.75V
Clamping Voltage (Max) @ Ipp	19.11V
Peak Pulse Current (10/1000µs)	34.6A
Peak Pulse Power	600W
Operating Temperature Range	-55°C to 150°C (TJ)
Package Type	DO-214AA (SMB)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the P6SMB13C is determined by the following critical parameters:

Reverse standoff voltage within 11.0V to 11.1V range
Peak pulse current capability of 33.0A to 34.6A
Clamping voltage between 18.2V and 19.11V
Peak pulse power rating of 600W
Surface mount package (DO-214AA/SMB form factor)
Operating temperature range supporting -55°C minimum
Zener diode type with bidirectional channel configuration

All substitute parts listed maintain these electrical and mechanical specifications, ensuring functional equivalence for circuit protection applications.

Parameter Comparison

Part Number	Manufacturer	Reverse Standoff (V)	Breakdown Min (V)	Clamping Max @ Ipp (V)	Peak Pulse Current (A)	Peak Pulse Power (W)	Temp Range (°C)	Package	Status
P6SMB13C	Littelfuse Inc.	11.1	11.75	19.11	34.6	600	-55 to 150	DO-214AA (SMB)	Obsolete
P6SMB13CA	Eaton - Electronics Division	11.1	12.4	18.2	34.6	600	-55 to 150	DO-214AA (SMB)	Active
SMBJ11CA	Fairchild Semiconductor	11.0	12.2	18.2	33.0	600	-55 to 150	DO-214AA (SMB)	Active
SMBJ11CAE3/TR13	Microchip Technology	11.0	12.2	18.2	33.0	600	-65 to 150	DO-214AA (SMB)	Active
SMBJP6KE13CA-TP	Micro Commercial Co	11.1	12.4	18.2	34.6	600	-55 to 175	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Primary Recommendation: P6SMB13CA (Eaton - Electronics Division)

The P6SMB13CA is the manufacturer-recommended substitute with identical reverse standoff voltage (11.1V) and peak pulse current (34.6A). This part maintains full electrical equivalence with the obsolete P6SMB13C while offering active product status and RoHS compliance. Packaging is available in Tape & Reel format with 27,200 units in stock.

Secondary Recommendation: SMBJP6KE13CA-TP (Micro Commercial Co)

The SMBJP6KE13CA-TP provides identical electrical specifications to the P6SMB13C with extended operating temperature range to 175°C. This part is suitable for applications requiring higher temperature performance while maintaining the same voltage and current ratings. ROHS3 compliance and active status support long-term availability.

Alternative Options: SMBJ11CA and SMBJ11CAE3/TR13

Both SMBJ series parts from Fairchild Semiconductor and Microchip Technology operate within acceptable parameter tolerances. The SMBJ11CAE3/TR13 offers extended lower temperature operation to -65°C, beneficial for extreme environment applications. These alternatives maintain 600W peak pulse power and 33.0A current handling with clamping voltages of 18.2V.

All substitute parts maintain DO-214AA (SMB) package compatibility, surface mount configuration, and RoHS compliance status suitable for direct board-level replacement.

Frequently Asked Questions (FAQ)

Q: Can P6SMB13CA directly replace P6SMB13C without circuit modification?

A: Yes. The P6SMB13CA maintains identical reverse standoff voltage (11.1V), peak pulse current (34.6A), and 600W power rating. The clamping voltage difference (18.2V vs 19.11V) falls within acceptable circuit protection tolerances for transient suppression applications.

Q: What is the primary difference between P6SMB13CA and SMBJ11CA?

A: The P6SMB13CA maintains 11.1V reverse standoff voltage and 34.6A peak pulse current, matching the original P6SMB13C specification. The SMBJ11CA operates at 11.0V standoff with 33.0A current, representing a minor tolerance variation acceptable for general-purpose protection circuits.

Q: Is the SMBJ11CAE3/TR13 suitable for low-temperature applications?

A: Yes. The SMBJ11CAE3/TR13 supports operating temperatures from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the P6SMB13C specification of -55°C to 150°C. This part is suitable for applications requiring enhanced cold-temperature performance.

Q: Are all substitute parts available in the same package format?

A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility. Packaging options vary by supplier: P6SMB13CA and SMBJP6KE13CA-TP are available in Tape & Reel format, while SMBJ11CA is supplied in bulk packaging.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts maintain RoHS compliance. P6SMB13CA and SMBJ11CAE3/TR13 are ROHS3 compliant. SMBJP6KE13CA-TP is ROHS3 compliant with REACH Unaffected status. All parts carry EAR99 export classification and HTSUS code 8541.10.0080.

Q: Which substitute offers the widest operating temperature range?

A: The SMBJP6KE13CA-TP provides the widest operating temperature range from -55°C to 175°C, offering 25°C additional high-temperature capability compared to the P6SMB13C specification of -55°C to 150°C.

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