SMBJ78CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ78CA-M3/52 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 78V reverse standoff voltage class and provides 126V maximum clamping voltage with 4.8A peak pulse current capability. The part is classified as Active status and is suitable for general-purpose transient voltage suppression applications requiring DO-214AA (SMB) package form factor. Substitute parts are identified when electrical parameters and mechanical specifications align within the allowed tolerance ranges for this product category.

Substiute Parts

SMBJ78CA-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 833SMBJ78CA-M3/52 Datasheet

Current PartRFQ

SMBJ78CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4009SMBJ78CA-E3/52 Datasheet

MFR RecommendedRFQ

SMBJ78CA

MeritekIn Stock: 4479SMBJ78CA Datasheet

DirectRFQ

SMBJ78CA

MeritekIn Stock: 4479SMBJ78CA Datasheet

DirectRFQ

SMBJ78CA

MeritekIn Stock: 4479SMBJ78CA Datasheet

DirectRFQ

SMBJ78CA-13-F

Diodes IncorporatedIn Stock: 3528SMBJ78CA-13-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ78CA-M3/52 are qualified based on the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 78V
• Voltage - Breakdown (Min): 86.7V
• Voltage - Clamping (Max) @ Ipp: 126V
• Current - Peak Pulse (10/1000µs): 4.8A nominal (tolerance range 4.7A to 4.76A acceptable)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C
• Type: Zener
• Bidirectional Channels: 1

Parts meeting these criteria are classified as direct substitutes. The SMBJ78CA-E3/52 from Vishay is a manufacturer-recommended substitute with identical electrical specifications. The SMBJ78CA-13-F from Diodes Incorporated and SMBJ78CA from Meritek are direct substitutes with peak pulse current specifications within the acceptable range (4.7A and 4.76A respectively).

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and comply with ROHS3 and REACH requirements. The SMBJ78CA-E3/52 from Vishay is designated as the manufacturer-recommended substitute, offering identical electrical specifications and the same series designation (TransZorb®). The SMBJ78CA-13-F from Diodes Incorporated and SMBJ78CA from Meritek are direct substitutes with peak pulse current ratings within the specified tolerance band. All substitute parts are surface mount components in DO-214AA (SMB) package configuration with identical operating temperature ranges and moisture sensitivity classifications. Selection among these substitutes is based on availability, supply chain requirements, and procurement preferences, as all parts satisfy the electrical and mechanical requirements for this application class.

Frequently Asked Questions (FAQ)

Q: Can SMBJ78CA-E3/52 be used as a direct replacement for SMBJ78CA-M3/52?

A: Yes. The SMBJ78CA-E3/52 is a manufacturer-recommended substitute with identical voltage ratings (78V reverse standoff, 126V clamping), peak pulse current (4.8A), power dissipation (600W), and package configuration (DO-214AA SMB). Both parts are manufactured by Vishay and comply with the same regulatory standards.

Q: What is the difference between SMBJ78CA from Meritek and the Vishay SMBJ78CA-M3/52?

A: The Meritek SMBJ78CA maintains identical voltage specifications (78V standoff, 126V clamping) and power rating (600W). The peak pulse current is specified as 4.76A compared to 4.8A for the Vishay part. Both use the DO-214AA (SMB) package and operate across the same temperature range (-55°C to 150°C). The difference in peak pulse current falls within acceptable tolerance for this component class.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All identified substitutes are supplied in Tape & Reel (TR) packaging and use the DO-214AA (SMB) surface mount package configuration. This ensures mechanical and electrical compatibility in automated assembly processes.

Q: Do substitute parts meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified with Moisture Sensitivity Level 1 (Unlimited). Regulatory and environmental compliance is equivalent across all identified substitutes.

Q: Can SMBJ78CA-13-F from Diodes Incorporated replace SMBJ78CA-M3/52?

A: Yes. The SMBJ78CA-13-F maintains the required voltage specifications (78V standoff, 126V clamping) and power rating (600W). Peak pulse current is specified as 4.7A, which is within the acceptable tolerance range for this component class. Package configuration and operating temperature range are identical.