SMBJ12CA/54 Equivalent & Substitute Parts

Part Overview

The SMBJ12CA/54 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional Zener diode is designed for general-purpose transient voltage protection in surface-mount applications. The device features a 12V reverse standoff voltage with a 19.9V maximum clamping voltage and 30.2A peak pulse current capability in a DO-214AA (SMB) package. As an active product with established market availability, equivalent parts are available from alternative manufacturers to support procurement flexibility and supply chain continuity.

Substiute Parts

SMBJ12CA/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 952SMBJ12CA/54 Datasheet

Current PartRFQ

SMBJ12CA

EVVO SemiIn Stock: 112062SMBJ12CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ12CA/54 is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 12V
• Voltage - Breakdown (Min): 13.3V
• Voltage - Clamping (Max) @ Ipp: 19.9V
• Current - Peak Pulse (10/1000µs): 30.2A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional (1 channel)

Substitute parts must maintain identical electrical performance characteristics and physical package compatibility to ensure direct replacement without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ12CA (EVVO Semi) is a direct electrical and mechanical equivalent to the SMBJ12CA/54 (Vishay). Both devices meet identical voltage and current specifications required for 12V transient voltage suppression applications.

Selection between these parts should be based on the following factors:

• RoHS Compliance: The EVVO Semi SMBJ12CA is ROHS3 compliant, while the Vishay SMBJ12CA/54 is RoHS non-compliant. Applications requiring RoHS compliance must use the EVVO Semi variant.
• Operating Temperature Range: The EVVO Semi part extends the lower operating temperature limit to -65°C compared to -55°C for the Vishay part, providing broader thermal performance for cold-environment applications.
• Packaging Options: The EVVO Semi part is available in Cut Tape (CT) and Digi-Reel® packaging, while the Vishay part packaging specification is not detailed in the provided data.
• Inventory Availability: EVVO Semi reports 112,045 pieces in stock versus 855 pieces for the Vishay part, indicating superior supply chain availability.

Both parts are active products suitable for new design implementation and existing design replacement.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ12CA (EVVO Semi) directly replace the SMBJ12CA/54 (Vishay) without circuit modification?

A: Yes. Both devices are electrically and mechanically equivalent with identical voltage ratings (12V reverse standoff, 19.9V clamping), current ratings (30.2A peak pulse), and package specifications (DO-214AA, SMB surface mount). Direct PCB substitution is supported without design changes.

Q: What is the difference in operating temperature range between these parts?

A: The EVVO Semi SMBJ12CA operates from -65°C to 150°C, while the Vishay SMBJ12CA/54 operates from -55°C to 150°C. The EVVO Semi part provides 10°C additional low-temperature capability.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance is a material composition and manufacturing process requirement, not an electrical performance specification. Both parts deliver identical electrical characteristics. RoHS compliance is a regulatory and procurement requirement, not a functional parameter.

Q: Are the DO-214AA and SMB package designations interchangeable?

A: Yes. DO-214AA and SMB refer to the same physical package format. Both designations describe the same surface-mount diode package with identical pin configuration and PCB footprint.

Q: What packaging formats are available for the substitute part?

A: The EVVO Semi SMBJ12CA is available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual assembly and automated reel-fed production processes.