P6SMBJ27CA Equivalent & Substitute Parts

Part Overview

The P6SMBJ27CA is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a reverse standoff voltage of 23.1V and provides clamping at 37.5V with a peak pulse current of 16.3A. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMBJ27CA
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener, Bidirectional
Voltage - Reverse Standoff (Typ)	23.1V
Voltage - Breakdown (Min)	25.7V
Voltage - Clamping (Max) @ Ipp	37.5V
Current - Peak Pulse (10/1000µs)	16.3A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the P6SMBJ27CA is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 23.1V Voltage - Breakdown (Min): 25.7V Voltage - Clamping (Max) @ Ipp: 37.5V Current - Peak Pulse (10/1000µs): 16.3A (or higher) Power - Peak Pulse: 600W (or higher) Package / Case: DO-214AA, SMB Mounting Type: Surface Mount Bidirectional Channels: 1

Substitute parts are grouped into two categories:

Direct Electrical Equivalents: Parts maintaining identical voltage ratings, clamping characteristics, and peak pulse current specifications of 16.3A at 600W power dissipation.

Enhanced Performance Substitutes: Parts with identical voltage ratings and clamping but higher peak pulse current (26.7A) and power dissipation (1000W), providing superior transient protection capability within the same package footprint.

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	Product Status	Package
P6SMBJ27CA	Littelfuse Inc.	23.1V	25.7V	37.5V	16.3A	600W	-55°C ~ 150°C	Obsolete	DO-214AA (SMBJ)
TPSMB27CA	Littelfuse Inc.	23.1V	25.7V	37.5V	16.3A	600W	-65°C ~ 175°C	Active	DO-214AA (SMBJ)
P6SMB27CA	Eaton - Electronics Division	23.1V	25.7V	37.5V	16.3A	600W	-55°C ~ 150°C	Active	DO-214AA, SMB
SMBJP6KE27CA-TP	Micro Commercial Co	23.1V	25.7V	37.5V	16.3A	600W	-55°C ~ 175°C	Active	DO-214AA (SMBJ)
1KSMB27CA	Taiwan Semiconductor Corporation	23.1V	25.7V	37.5V	26.7A	1000W	-55°C ~ 175°C	Active	DO-214AA, SMB
1KSMB27CAH	Taiwan Semiconductor Corporation	23.1V	25.7V	37.5V	26.7A	1000W	-55°C ~ 175°C	Active	DO-214AA, SMB
P6SMB27C	Taiwan Semiconductor Corporation	21.8V	24.3V	39.1V	16A	600W	-55°C ~ 150°C	Active	DO-214AA, SMB
P6SMB27CA-E3/52	Vishay General Semiconductor - Diodes Division	23.1V	25.7V	37.5V	16A	600W	-65°C ~ 150°C	Active	DO-214AA, SMB
P6SMB27CA-E3/5B	Vishay General Semiconductor - Diodes Division	23.1V	25.7V	37.5V	16A	600W	-65°C ~ 150°C	Active	DO-214AA, SMB

Engineering Selection Recommendations

For direct replacement of the obsolete P6SMBJ27CA, select from active parts maintaining identical electrical specifications:

TPSMB27CA (Littelfuse Inc.) provides direct electrical equivalence with extended operating temperature range (-65°C ~ 175°C) and automotive-grade qualification (AEC-Q101), suitable for applications requiring enhanced thermal performance.

P6SMB27CA (Eaton - Electronics Division) maintains identical electrical and thermal specifications with active product status and established supply availability.

SMBJP6KE27CA-TP (Micro Commercial Co) offers direct electrical equivalence with extended upper operating temperature limit (-55°C ~ 175°C).

For applications requiring enhanced transient protection capability within the same package footprint, the 1KSMB27CA and 1KSMB27CAH (Taiwan Semiconductor Corporation) provide doubled peak pulse current (26.7A) and power dissipation (1000W) while maintaining identical voltage ratings and clamping characteristics. The 1KSMB27CAH variant includes automotive-grade qualification (AEC-Q101).

P6SMB27C (Taiwan Semiconductor Corporation) is not recommended as a direct substitute due to deviation in voltage ratings (21.8V reverse standoff, 24.3V breakdown minimum, 39.1V clamping maximum).

Frequently Asked Questions (FAQ)

Q: Can TPSMB27CA replace P6SMBJ27CA in all applications?

A: TPSMB27CA is electrically equivalent with identical voltage and current ratings. The extended operating temperature range (-65°C ~ 175°C versus -55°C ~ 150°C) and automotive qualification (AEC-Q101) make it suitable for replacement. Verify application temperature requirements and compliance needs before substitution.

Q: What is the difference between 1KSMB27CA and P6SMBJ27CA?

A: Both maintain identical voltage ratings (23.1V reverse standoff, 37.5V clamping). The 1KSMB27CA provides higher peak pulse current (26.7A versus 16.3A) and power dissipation (1000W versus 600W). This enhanced capability allows handling of larger transient events while maintaining the same package size (DO-214AA, SMB).

Q: Are Vishay P6SMB27CA-E3/52 and P6SMB27CA-E3/5B interchangeable?

A: Both Vishay parts maintain identical electrical specifications (23.1V reverse standoff, 37.5V clamping, 16A peak pulse current, 600W power dissipation) and package format (DO-214AA, SMB). The suffix designations indicate packaging configuration differences (Cut Tape & Digi-Reel versus Tape & Reel). Electrical performance is equivalent.

Q: Why is P6SMB27C not recommended as a substitute?

A: P6SMB27C deviates from the required electrical specifications with lower reverse standoff voltage (21.8V versus 23.1V), lower breakdown minimum (24.3V versus 25.7V), and higher clamping voltage (39.1V versus 37.5V). These differences affect circuit protection characteristics and make it unsuitable for direct replacement.

Q: What packaging formats are available for substitute parts?

A: All substitute parts are supplied in DO-214AA (SMB) surface-mount package. Packaging options include Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel configurations. Verify specific packaging requirements for automated assembly processes.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts maintain ROHS3 compliance status, consistent with the original P6SMBJ27CA specification.

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