P6SMB24CA-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB24CA-M3/5B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	20.5	V
Voltage - Breakdown (Min)	22.8	V
Voltage - Clamping (Max) @ Ipp	33.2	V
Current - Peak Pulse (10/1000µs)	18.1	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65°C to 150°C	TJ
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Type	Zener	—
Bidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitute parts for the P6SMB24CA-M3/5B are classified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 20.5V
Voltage - Breakdown (Min): 22.8V
Voltage - Clamping (Max) @ Ipp: 33.2V
Current - Peak Pulse (10/1000µs): 18.1A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Type: Zener, Bidirectional (1 channel)

Grouping Logic:

Group 1 - Direct Electrical & Packaging Equivalents (Packaging Variant Only): P6SMB24CA-E3/52 differs only in packaging format (Tape & Reel vs. Tape & Box) while maintaining identical electrical specifications and DO-214AA SMB package compatibility.

Group 2 - Manufacturer Alternatives (Electrical Equivalents with Minor Variations): P6SMB24CA (Eaton) and SMBJP6KE24CA-TP (Micro Commercial Co) maintain the core voltage and power specifications with peak pulse current ratings of 18.4A, which exceeds the minimum 18.1A requirement. Operating temperature ranges vary (Eaton: -55°C to 150°C; MCC: -55°C to 175°C) but remain within acceptable industrial standards.

Group 3 - Higher Performance Alternative (Different Pulse Specification): SM6T24CA (STMicroelectronics) maintains identical standoff and breakdown voltages but specifies higher clamping voltage (42.8V) and significantly higher peak pulse current (93A at 8/20µs pulse width). This part operates under a different pulse specification standard and represents a higher-performance alternative suitable for applications requiring enhanced transient suppression capability.

Parameter Comparison

Parameter	P6SMB24CA-M3/5B (Main)	P6SMB24CA-E3/52	P6SMB24CA (Eaton)	SMBJP6KE24CA-TP	SM6T24CA
Manufacturer	Vishay	Vishay	Eaton	Micro Commercial Co	STMicroelectronics
Voltage - Reverse Standoff (Typ)	20.5V	20.5V	20.5V	20.5V	20.5V
Voltage - Breakdown (Min)	22.8V	22.8V	22.8V	22.8V	22.8V
Voltage - Clamping (Max) @ Ipp	33.2V	33.2V	33.2V	33.2V	42.8V
Current - Peak Pulse (10/1000µs)	18.1A	18.1A	18.4A	18.4A	93A (8/20µs)
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature Range	-65°C to 150°C	-65°C to 150°C	-55°C to 150°C	-55°C to 175°C	-55°C to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

P6SMB24CA-E3/52 (Vishay): Direct substitute with identical electrical specifications. Differs only in packaging format (Tape & Reel vs. Tape & Box). Recommended for applications requiring the original Vishay product with alternative supply chain or inventory management considerations. Maintains full RoHS3 compliance and -65°C to 150°C operating range.

P6SMB24CA (Eaton): Functionally equivalent with peak pulse current of 18.4A, exceeding the 18.1A specification. Operating temperature minimum is -55°C (vs. -65°C for Vishay). Suitable for applications where the lower temperature limit is not a design constraint. RoHS compliant with active production status.

SMBJP6KE24CA-TP (Micro Commercial Co): Functionally equivalent with peak pulse current of 18.4A and extended operating temperature range to 175°C. Recommended for high-temperature applications. ROHS3 compliant with active production status.

SM6T24CA (STMicroelectronics): Higher-performance alternative with clamping voltage of 42.8V and peak pulse current of 93A (8/20µs specification). Suitable for applications requiring enhanced transient suppression beyond the standard 33.2V clamping specification. Operates under different pulse width specification (8/20µs vs. 10/1000µs). ROHS3 compliant with active production status.

All substitute parts maintain DO-214AA SMB package compatibility and surface mount configuration, ensuring mechanical and thermal compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can P6SMB24CA-E3/52 be used as a direct replacement for P6SMB24CA-M3/5B?

A: Yes. P6SMB24CA-E3/52 is a direct electrical equivalent with identical voltage and current specifications. The only difference is packaging format (Tape & Reel vs. Tape & Box). Both maintain the same DO-214AA SMB package footprint and operating characteristics.

Q: What is the difference between the Eaton P6SMB24CA and the Vishay P6SMB24CA-M3/5B?

A: The Eaton part specifies peak pulse current of 18.4A (vs. 18.1A) and operating temperature minimum of -55°C (vs. -65°C). Voltage specifications are identical. The Eaton part is suitable for applications where the -55°C minimum temperature is acceptable.

Q: Why does SM6T24CA have different clamping voltage and current specifications?

A: SM6T24CA operates under a different pulse width specification (8/20µs vs. 10/1000µs). This results in higher peak pulse current (93A) and higher clamping voltage (42.8V). It represents a higher-performance alternative for applications requiring enhanced transient suppression capability.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the DO-214AA SMB package with identical surface mount footprint and pin configuration. Direct PCB replacement is possible without layout modifications.

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

A: SMBJP6KE24CA-TP (Micro Commercial Co) operates from -55°C to 175°C, providing the widest high-temperature capability. The original Vishay part operates from -65°C to 150°C.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are RoHS compliant. P6SMB24CA-M3/5B, P6SMB24CA-E3/52, SMBJP6KE24CA-TP, and SM6T24CA are ROHS3 compliant. Eaton P6SMB24CA is RoHS compliant.

Q: Can I use SM6T24CA in place of P6SMB24CA-M3/5B in any application?

A: SM6T24CA maintains the same standoff and breakdown voltages but operates under different pulse specifications with higher clamping voltage (42.8V vs. 33.2V) and significantly higher peak pulse current (93A vs. 18.1A). It is suitable for applications requiring enhanced transient suppression but may not be appropriate for designs optimized for the lower clamping voltage specification.

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