SMBJ85CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ85CA-M3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional Zener TVS diode operates at 85V reverse standoff voltage with a 137V maximum clamping voltage and 4.4A peak pulse current rating. It is housed in a DO-214AA (SMB) surface mount package and is designed for general-purpose transient voltage suppression applications. The part is Active status and ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when sourcing from multiple qualified manufacturers is needed for supply chain resilience.

Substiute Parts

SMBJ85CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1139SMBJ85CA-M3/5B Datasheet

Current PartRFQ

SMBJ85CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 18160SMBJ85CA-E3/52 Datasheet

DirectRFQ

SMBJ85CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 4389SMBJ85CA-E3/5B Datasheet

MFR RecommendedRFQ

SMBJ85CA

MeritekIn Stock: 145208SMBJ85CA Datasheet

DirectRFQ

SMBJ85CA

MeritekIn Stock: 145208SMBJ85CA Datasheet

DirectRFQ

SMBJ85CA-13-F

Diodes IncorporatedIn Stock: 6296SMBJ85CA-13-F Datasheet

DirectRFQ

SMBJ85CA-TP

Micro Commercial CoIn Stock: 4037SMBJ85CA-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ85CA-M3/5B is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 85V (Typ)
• Voltage - Breakdown: 94.4V (Min)
• Voltage - Clamping: 137V (Max @ Ipp)
• Current - Peak Pulse: 4.4A (10/1000µs)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional (1 channel)

Allowed Variations:

• Packaging format (Tape & Reel, Cut Tape)
• Manufacturer identity
• Operating temperature range (minimum -55°C, maximum ≥150°C)
• Peak pulse current tolerance (±0.2A acceptable)

All substitute parts listed maintain identical electrical specifications and package form factor, differing only in packaging format and manufacturer source.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, qualifying them for direct substitution in applications requiring the SMBJ85CA-M3/5B electrical and mechanical specifications.

Vishay variants (SMBJ85CA-E3/52, SMBJ85CA-E3/5B): Identical electrical performance to the primary part. Selection between these and the main part depends on packaging format requirements. Cut Tape (CT) format suits lower-volume or manual assembly processes, while Tape & Reel (TR) format supports automated pick-and-place manufacturing.

Meritek SMBJ85CA: Functionally equivalent with peak pulse current of 4.38A, within acceptable tolerance of the 4.4A specification. Packaging format not specified; verify with supplier before procurement.

Diodes Incorporated SMBJ85CA-13-F: Identical electrical specifications and Tape & Reel packaging. Suitable for direct replacement in automated assembly environments.

Micro Commercial Co SMBJ85CA-TP: Identical electrical specifications with extended operating temperature range (-55°C ~ 175°C). Cut Tape packaging format. The higher maximum temperature rating provides additional thermal margin in applications approaching the 150°C junction temperature limit.

Frequently Asked Questions (FAQ)

Q: Can I substitute SMBJ85CA-E3/52 (Cut Tape) for SMBJ85CA-M3/5B (Tape & Reel) in production?

A: Yes. Both parts have identical electrical specifications and DO-214AA package form factor. The difference is packaging format only. Cut Tape format requires manual or semi-automated handling, while Tape & Reel supports fully automated pick-and-place assembly. Verify your assembly equipment compatibility before switching formats.

Q: Is the Meritek SMBJ85CA with 4.38A peak pulse current acceptable as a substitute?

A: Yes. The 4.38A specification is within acceptable tolerance of the 4.4A rating. Both parts meet the 600W peak pulse power requirement and maintain identical voltage specifications (85V standoff, 137V clamping). Verify packaging format availability with the supplier.

Q: What is the difference between SMBJ85CA-13-F and SMBJ85CA-M3/5B?

A: Both parts are electrically identical with 85V standoff, 137V clamping, and 4.4A peak pulse current. The difference is manufacturer (Diodes Incorporated vs. Vishay) and packaging format (Tape & Reel for both). Both are ROHS3 compliant and Active status.

Q: Why does SMBJ85CA-TP have a higher operating temperature range (-55°C ~ 175°C)?

A: The extended temperature range is a manufacturer specification difference. The part maintains identical electrical performance at the standard -55°C ~ 150°C range. The additional thermal margin (up to 175°C) may provide design flexibility in high-temperature applications, though the primary part specification remains -55°C ~ 150°C.

Q: Are all substitute parts in the same DO-214AA package?

A: Yes. All listed substitutes use the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility with PCB layouts designed for the SMBJ85CA-M3/5B. Packaging format (Tape & Reel vs. Cut Tape) affects handling and assembly processes, not physical package dimensions.

Q: Can I mix manufacturers in the same production batch?

A: All listed parts meet ROHS3 compliance and Active product status. Mixing manufacturers is technically feasible from an electrical standpoint. However, verify with your quality assurance and supply chain procedures regarding manufacturer qualification and traceability requirements for your specific application.