SMP17A-M3/85A Equivalent & Substitute Parts

Part Overview

The SMP17A-M3/85A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage protection applications, featuring a 17V reverse standoff voltage and 27.6V maximum clamping voltage. The device is classified as Active product status and is suitable for surface mount applications in DO-220AA packaging. TVS diodes are essential in circuit protection to suppress voltage transients and prevent damage to sensitive electronic components.

Substiute Parts

SMP17A-M3/85A

Vishay General Semiconductor - Diodes DivisionIn Stock: 936SMP17A-M3/85A Datasheet

Current PartRFQ

SMP17A-M3/84A

Vishay General Semiconductor - Diodes DivisionIn Stock: 10453SMP17A-M3/84A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMP17A-M3/85A is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Breakdown (Min): 18.9V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 14.5A
• Power - Peak Pulse: 400W
• Package / Case: DO-220AA
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The substitute part SMP17A-M3/84A meets all these parameters identically, making it a direct functional equivalent. Both parts belong to the same TransZorb® and eSMP® series from Vishay, share identical electrical specifications, and are packaged in the same DO-220AA surface mount configuration.

Parameter Comparison

Engineering Selection Recommendations

Both SMP17A-M3/85A and SMP17A-M3/84A are Active product status components from Vishay, ensuring ongoing manufacturer support and availability. Both parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. The electrical and mechanical specifications are identical across all critical parameters, including voltage ratings, current handling, thermal operating range, and package configuration. Selection between these parts may be based on inventory availability or supply chain considerations, as they are functionally interchangeable for all circuit protection applications requiring 17V standoff voltage and 27.6V clamping voltage in DO-220AA surface mount packaging.

Frequently Asked Questions (FAQ)

Q: Can SMP17A-M3/84A be used as a direct replacement for SMP17A-M3/85A?

A: Yes. Both parts are identical in electrical specifications, including reverse standoff voltage (17V), breakdown voltage (18.9V minimum), clamping voltage (27.6V maximum), peak pulse current (14.5A), and power dissipation (400W). They share the same DO-220AA package and surface mount configuration.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both parts carry identical RoHS3 compliance status and REACH Unaffected designation. Both are classified as Active product status by the manufacturer.

Q: What determines whether a part can substitute for the SMP17A-M3/85A?

A: Substitution is determined by matching the following parameters: reverse standoff voltage (17V), breakdown voltage (18.9V minimum), clamping voltage (27.6V maximum), peak pulse current (14.5A), power rating (400W), package type (DO-220AA), mounting type (surface mount), and unidirectional channel configuration (1 channel).

Q: Are the operating temperature ranges the same?

A: Yes. Both parts operate across the identical temperature range of -55°C to 150°C junction temperature.

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

A: Yes. Both parts use identical DO-220AA surface mount packaging and have identical footprint requirements, allowing direct PCB layout compatibility.