SMBJ7.0CA-E3/5B Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMBJ7.0CA-E3/5B 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 provides transient overvoltage protection for general-purpose applications. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and operational parameters to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	7V
Voltage - Breakdown (Min)	7.78V
Voltage - Clamping (Max) @ Ipp	12V
Current - Peak Pulse (10/1000µs)	50A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
Bidirectional Channels	1
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ7.0CA-E3/5B is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 7V
Voltage - Clamping (Max) @ Ipp: 12V (±0.2V tolerance acceptable)
Current - Peak Pulse (10/1000µs): 50A (±2A tolerance acceptable)
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories: Direct Equivalents (identical electrical and mechanical specifications) and Functional Equivalents (minor parameter variations within acceptable engineering tolerances).

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature	RoHS Status
SMBJ7.0CA-E3/5B	Vishay General Semiconductor - Diodes Division	7V	12V	50A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SMBJ7.0CD-M3/I	Vishay General Semiconductor - Diodes Division	7V	11.8V	50.8A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SMBJ7.0CA	MDD	7V	12V	50A	600W	DO-214AA, SMB	-50°C ~ 150°C	ROHS3 Compliant
SMBJ7.0CA-13-F	Diodes Incorporated	7V	12V	50A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SMBJ7.0CA-TP	Micro Commercial Co	7V	12V	50A	600W	DO-214AA, SMB	-55°C ~ 175°C	ROHS3 Compliant
SMBJ7V0CA	Taiwan Semiconductor Corporation	7V	12V	50A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
P6SMB8.2CA	Taiwan Semiconductor Corporation	7.02V	12.1V	52A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SM6T7V5CA	STMicroelectronics	6.4V	14.5V	276A (8/20µs)	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant

Engineering Selection Recommendations

Direct equivalents for the SMBJ7.0CA-E3/5B include SMBJ7.0CA-13-F (Diodes Incorporated), SMBJ7.0CA-TP (Micro Commercial Co), and SMBJ7V0CA (Taiwan Semiconductor Corporation). These parts maintain identical voltage and current specifications with full ROHS3 compliance and Active product status.

SMBJ7.0CD-M3/I (Vishay) qualifies as a functional equivalent with clamping voltage of 11.8V and peak pulse current of 50.8A, representing minor parameter variations within acceptable engineering tolerances.

SMBJ7.0CA (MDD) is electrically equivalent but operates over a narrower temperature range (-50°C to 150°C versus -55°C to 150°C). Selection depends on application temperature requirements.

P6SMB8.2CA (Taiwan Semiconductor Corporation) presents a functional equivalent with reverse standoff voltage of 7.02V and clamping voltage of 12.1V, suitable for applications tolerating these minor deviations.

SM6T7V5CA (STMicroelectronics) differs significantly in reverse standoff voltage (6.4V) and peak pulse current (276A at 8/20µs pulse), making it unsuitable as a direct substitute for standard SMBJ7.0 applications.

All recommended substitutes maintain DO-214AA (SMB) package compatibility, surface mount configuration, and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.0CA-TP replace SMBJ7.0CA-E3/5B in all applications?

A: Yes. SMBJ7.0CA-TP maintains identical voltage and current specifications (7V reverse standoff, 12V clamping, 50A peak pulse) with DO-214AA package compatibility. The extended operating temperature range (-55°C to 175°C) provides additional thermal margin.

Q: What is the difference between SMBJ7.0CD-M3/I and the main part?

A: SMBJ7.0CD-M3/I has clamping voltage of 11.8V (versus 12V) and peak pulse current of 50.8A (versus 50A). These variations fall within acceptable engineering tolerances for TVS diode substitution.

Q: Is P6SMB8.2CA a suitable substitute?

A: P6SMB8.2CA operates with reverse standoff voltage of 7.02V and clamping voltage of 12.1V. While electrically similar, the 0.02V standoff variation and 0.1V clamping increase may affect circuit performance in precision applications. Verify compatibility with circuit design margins.

Q: Why is SM6T7V5CA not recommended as a substitute?

A: SM6T7V5CA has reverse standoff voltage of 6.4V (versus 7V) and peak pulse current of 276A (versus 50A). These significant parameter differences make it unsuitable for direct replacement in SMBJ7.0 applications.

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

A: Yes. All listed substitute parts use DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility with the original SMBJ7.0CA-E3/5B design.

Q: Do all substitutes meet RoHS compliance requirements?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the main part.

Q: What temperature range should I consider when selecting a substitute?

A: The main part operates from -55°C to 150°C. SMBJ7.0CA-TP extends to 175°C, while SMBJ7.0CA (MDD) operates from -50°C to 150°C. Select based on your application's thermal requirements.

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