SMBJ8.0CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ8.0CA-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 provides transient overvoltage protection for general-purpose applications. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical parameters, mechanical packaging, and compliance certifications remain equivalent across different manufacturers or packaging variants.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8	V
Voltage - Breakdown (Min)	8.89	V
Voltage - Clamping (Max) @ Ipp	13.6	V
Current - Peak Pulse (10/1000µs)	44.1	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
Type	Zener	—
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ8.0CA-M3/5B are qualified based on the following criteria:

Electrical Equivalence: All substitute parts maintain identical voltage ratings (8V reverse standoff, 8.89V minimum breakdown, 13.6V maximum clamping) and current handling (44.1A peak pulse, 600W peak power).

Mechanical Compatibility: All parts use the DO-214AA (SMB) surface mount package, ensuring PCB footprint and assembly process compatibility.

Environmental & Compliance: All substitute parts are Active status products with RoHS3 compliance and MSL 1 rating, meeting the same regulatory and environmental requirements.

Functional Classification: All parts are bidirectional Zener-type TVS diodes rated for general-purpose transient voltage suppression applications.

The identified substitute parts are SMBJ8.0CA-E3/52 (Vishay), SMBJ8.0CA-13-F (Diodes Incorporated), SMBJ8.0CA-TP (Micro Commercial Co), and SMBJ8V0CA (Taiwan Semiconductor Corporation).

Parameter Comparison

Parameter	SMBJ8.0CA-M3/5B (Vishay)	SMBJ8.0CA-E3/52 (Vishay)	SMBJ8.0CA-13-F (Diodes Inc)	SMBJ8.0CA-TP (MCC)	SMBJ8V0CA (TSC)
Voltage - Reverse Standoff	8V	8V	8V	8V	8V
Voltage - Breakdown (Min)	8.89V	8.89V	8.89V	8.89V	8.89V
Voltage - Clamping (Max) @ Ipp	13.6V	13.6V	13.6V	13.6V	13.6V
Current - Peak Pulse (10/1000µs)	44.1A	44.1A	44.1A	44.1A	44.1A
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 175°C	-55 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
Type	Zener	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All identified substitute parts meet the electrical and mechanical requirements for direct replacement of the SMBJ8.0CA-M3/5B. Selection among these equivalents should be based on:

Availability & Lead Time: SMBJ8.0CA-E3/52 (3070 pcs), SMBJ8.0CA-13-F (4078 pcs), SMBJ8V0CA (4300 pcs), and SMBJ8.0CA-TP (2392 pcs) are all in stock with varying inventory levels.

Temperature Performance: SMBJ8.0CA-TP offers an extended operating temperature range to 175°C, compared to 150°C for other variants. This provides additional thermal margin in high-temperature applications.

Manufacturer Certification: All parts carry identical RoHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for end-use applications.

Packaging Variant: SMBJ8.0CA-13-F is supplied in SMB package designation by Diodes Incorporated, while other variants use DO-214AA (SMBJ) or DO-214AA (SMB) designations. All are mechanically compatible with standard SMB footprints.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.0CA-TP be used as a direct replacement for SMBJ8.0CA-M3/5B?

A: Yes. Both parts are electrically identical with 8V reverse standoff, 8.89V minimum breakdown, 13.6V clamping voltage, and 44.1A peak pulse current. The SMBJ8.0CA-TP offers extended temperature operation to 175°C versus 150°C, making it suitable for higher thermal environments while maintaining full compatibility.

Q: Are there differences in the DO-214AA and SMB package designations?

A: No functional difference exists. DO-214AA (SMBJ) and DO-214AA (SMB) refer to the same physical package. All substitute parts use this identical surface mount package with equivalent PCB footprints and assembly compatibility.

Q: Does the manufacturer affect substitution eligibility?

A: No. Substitution is determined by electrical parameters, package type, and compliance certifications, not manufacturer identity. SMBJ8.0CA-M3/5B from Vishay, SMBJ8.0CA-13-F from Diodes Incorporated, SMBJ8.0CA-TP from Micro Commercial Co, and SMBJ8V0CA from Taiwan Semiconductor Corporation are all equivalent for circuit protection applications.

Q: What is the significance of the part number suffix (M3/5B, E3/52, TP, 13-F)?

A: Suffixes indicate packaging configuration and tape reel specifications managed by individual manufacturers. All variants are supplied in Tape & Reel (TR) format for automated assembly. The electrical and mechanical specifications remain constant across all variants.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant status with MSL 1 (Unlimited) moisture sensitivity rating, meeting identical environmental and regulatory requirements as the primary part.

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