SMBJ11CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ11CA-M3/5B is an active Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional zener diode is designed for general-purpose transient voltage suppression in surface-mount applications. The part operates across a wide temperature range and meets RoHS3 compliance requirements. Substitute parts are identified to provide design flexibility, inventory optimization, and alternative sourcing options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	11V
Voltage - Breakdown (Min)	12.2V
Voltage - Clamping (Max) @ Ipp	18.2V
Current - Peak Pulse (10/1000µs)	33A
Power - Peak Pulse	600W
Bidirectional Channels	1
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMBJ11CA-M3/5B are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 11V
Voltage - Breakdown (Min): 12.2V
Voltage - Clamping (Max) @ Ipp: 18.2V
Current - Peak Pulse (10/1000µs): 33A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

All identified substitute parts maintain identical electrical specifications and package compatibility. Variations in packaging format (Tape & Reel vs. Bulk) and manufacturer do not affect electrical performance or board-level compatibility.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Operating Temperature	RoHS Status
SMBJ11CA-M3/5B	Vishay General Semiconductor	11V	18.2V	33A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SMBJ11CA-E3/52	Vishay General Semiconductor	11V	18.2V	33A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SMBJ11CA	Fairchild Semiconductor	11V	18.2V	33A	600W	DO-214AA, SMB	-55°C ~ 150°C	Not Specified
SMBJ11CA-13-F	Diodes Incorporated	11V	18.2V	33A	600W	DO-214AA, SMB	-55°C ~ 150°C	ROHS3 Compliant
SMBJ11CA-TP	Micro Commercial Co	11V	18.2V	33A	600W	DO-214AA, SMB	-55°C ~ 175°C	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the SMBJ11CA-M3/5B. Selection among these alternatives should be based on:

Compliance & Certification: SMBJ11CA-E3/52, SMBJ11CA-13-F, and SMBJ11CA-TP all carry ROHS3 compliance certification, matching the original part specification. The Fairchild SMBJ11CA variant does not specify RoHS status in the provided data.

Temperature Performance: SMBJ11CA-TP extends the maximum operating temperature to 175°C, compared to 150°C for the primary part and other substitutes. This variant provides enhanced thermal margin for applications requiring elevated temperature operation.

Packaging Format: Tape & Reel (TR) packaging is available for SMBJ11CA-E3/52, SMBJ11CA-13-F, and SMBJ11CA-TP, supporting automated assembly processes. Bulk packaging is available for the Fairchild SMBJ11CA variant.

Inventory Availability: Selection may be influenced by stock levels and lead time requirements across multiple manufacturers and distributors.

Frequently Asked Questions (FAQ)

Q: Can SMBJ11CA-E3/52 be used as a direct replacement for SMBJ11CA-M3/5B?

A: Yes. Both parts share identical electrical specifications (11V standoff, 18.2V clamping, 33A peak pulse current, 600W peak power) and the same DO-214AA SMB package. The primary difference is the packaging format (Tape & Reel vs. Tape & Reel) and manufacturer variant code, which do not affect circuit performance or board compatibility.

Q: What is the difference between the Vishay and Fairchild versions?

A: The Vishay SMBJ11CA-M3/5B and SMBJ11CA-E3/52 are manufactured by Vishay General Semiconductor - Diodes Division, while the Fairchild SMBJ11CA is manufactured by Fairchild Semiconductor. All three maintain identical electrical parameters and package specifications. The Fairchild variant does not specify RoHS compliance status in the provided documentation.

Q: Is SMBJ11CA-TP suitable for high-temperature applications?

A: SMBJ11CA-TP supports an operating temperature range of -55°C to 175°C, compared to -55°C to 150°C for the primary part. This 25°C additional thermal margin makes it suitable for applications requiring extended high-temperature operation while maintaining all other electrical specifications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: SMBJ11CA-E3/52, SMBJ11CA-13-F, and SMBJ11CA-TP are available in Tape & Reel (TR) packaging. The Fairchild SMBJ11CA is available in Bulk packaging. Selection depends on assembly process requirements and inventory management preferences.

Q: Do all substitute parts meet RoHS3 compliance?

A: SMBJ11CA-E3/52, SMBJ11CA-13-F, and SMBJ11CA-TP are confirmed ROHS3 Compliant. The Fairchild SMBJ11CA does not specify RoHS status in the provided data. For applications requiring RoHS3 certification, use SMBJ11CA-E3/52, SMBJ11CA-13-F, or SMBJ11CA-TP.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts use the identical DO-214AA SMB package footprint and maintain the same electrical specifications. They are mechanically and electrically interchangeable at the board level without design modifications.

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