SMBJ85A-13 Equivalent & Substitute Parts

Part Overview

The SMBJ85A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the SMB (DO-214AA) surface mount package. This component is designed for general-purpose transient voltage suppression applications with an 85V reverse standoff voltage and 137V maximum clamping voltage. The SMBJ85A-13 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SMBJ85A-13

Diodes IncorporatedIn Stock: 1126SMBJ85A-13 Datasheet

Current PartRFQ

SMBJ85A-13-F

Diodes IncorporatedIn Stock: 4424SMBJ85A-13-F Datasheet

DirectRFQ

SMBJ85A

MeritekIn Stock: 2164SMBJ85A Datasheet

DirectRFQ

SMBJ85A

MeritekIn Stock: 2164SMBJ85A Datasheet

DirectRFQ

SMBJ85A

MeritekIn Stock: 2164SMBJ85A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ85A-13 is determined by strict equivalence across the following electrical and mechanical parameters:

• Reverse standoff voltage: 85V (typical)
• Breakdown voltage minimum: 94.4V
• Clamping voltage maximum: 137V at Ipp
• Peak pulse current rating: 4.4A nominal (tolerance range 4.38A–4.4A acceptable)
• Peak pulse power: 600W
• Package: DO-214AA (SMB) surface mount
• Unidirectional configuration: 1 channel
• Operating temperature range: -55°C to 150°C

Parts meeting these criteria are classified as direct electrical and mechanical equivalents. Packaging format (bulk vs. tape & reel) does not affect electrical equivalence but may affect procurement and handling requirements.

Parameter Comparison

Engineering Selection Recommendations

SMBJ85A-13-F (Diodes Incorporated) is the primary substitute. This part maintains identical electrical specifications and package configuration as the original SMBJ85A-13 while offering active product status and ROHS3 compliance. The "-F" suffix indicates tape & reel packaging, suitable for automated assembly processes.

SMBJ85A (Meritek) is a secondary substitute. This part meets all electrical parameter requirements with a peak pulse current of 4.38A, which falls within acceptable tolerance of the original 4.4A specification. Meritek manufacture ensures active availability and ROHS3 compliance. Selection of this part should account for manufacturer qualification requirements in your design documentation.

Both substitute parts are electrically and mechanically compatible with the original SMBJ85A-13 in applications requiring 85V standoff voltage transient suppression in the SMB package format.

Frequently Asked Questions (FAQ)

Q: Can SMBJ85A-13-F be used as a direct replacement for SMBJ85A-13?

A: Yes. SMBJ85A-13-F is electrically and mechanically identical to SMBJ85A-13. The primary difference is packaging format (tape & reel vs. bulk) and active product status. Both are DO-214AA (SMB) surface mount packages with identical electrical ratings.

Q: What is the difference between SMBJ85A-13-F and SMBJ85A?

A: Both parts share identical electrical specifications (85V standoff, 137V clamping, 600W peak power). The peak pulse current differs slightly: SMBJ85A-13-F is rated 4.4A while SMBJ85A is rated 4.38A. This 0.02A difference is within normal manufacturing tolerance and does not affect functional compatibility. The manufacturer differs (Diodes Incorporated vs. Meritek).

Q: Are there packaging considerations when substituting these parts?

A: SMBJ85A-13-F is supplied in tape & reel format, optimized for automated pick-and-place assembly. The original SMBJ85A-13 packaging format is not specified in available data. Both parts use the same DO-214AA (SMB) footprint and are compatible with standard surface mount assembly processes.

Q: Can I use SMBJ85A (Meritek) in a design originally specified for SMBJ85A-13?

A: Yes, provided your design documentation permits manufacturer substitution. The electrical parameters are equivalent within specified tolerances. Verify that Meritek components meet your supply chain qualification and quality requirements.

Q: Why is the original SMBJ85A-13 discontinued?

A: Product discontinuation is a standard lifecycle event in component manufacturing. SMBJ85A-13-F provides continued support for this electrical specification with improved compliance status (ROHS3).