SMA6F17A-M3/6B Equivalent & Substitute Parts

Part Overview

The SMA6F17A-M3/6B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is part of the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The device features a 17V reverse standoff voltage with a maximum clamping voltage of 31.4V at peak pulse current. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified when they maintain the same reverse standoff voltage, breakdown voltage range, and general electrical performance characteristics while potentially offering different package configurations or current ratings.

Substiute Parts

SMA6F17A-M3/6B

Vishay General Semiconductor - Diodes DivisionIn Stock: 679SMA6F17A-M3/6B Datasheet

Current PartRFQ

SMAJ17A-TP

Micro Commercial CoIn Stock: 5986SMAJ17A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMA6F17A-M3/6B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): Must be 17V
• Voltage - Breakdown (Min): Must be 18.9V
• Type: Must be Zener diode
• Unidirectional Channels: Must be 1
• Mounting Type: Must be Surface Mount
• Product Status: Must be Active
• RoHS Compliance: Must maintain ROHS3 Compliant status

The SMAJ17A-TP qualifies as a substitute part because it maintains the same reverse standoff voltage (17V), breakdown voltage minimum (18.9V), zener type classification, and single unidirectional channel configuration. Both parts are surface-mount devices in active production with ROHS3 compliance. Differences in package configuration (DO-214AC versus DO-221AC), clamping voltage (27.6V versus 31.4V), and peak pulse current (14.5A versus 111A) reflect design variations within the same voltage class and do not disqualify substitution when application requirements permit lower current handling or different clamping characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the SMA6F17A-M3/6B and SMAJ17A-TP are active production components with ROHS3 compliance and unlimited moisture sensitivity ratings, making them suitable for modern manufacturing environments. Selection between these parts should be based on application-specific current and power dissipation requirements. The SMA6F17A-M3/6B provides higher peak pulse current handling (111A) and power dissipation (4000W) with a higher clamping voltage (31.4V), making it suitable for high-energy transient suppression applications. The SMAJ17A-TP offers lower peak pulse current (14.5A) and power dissipation (400W) with a lower clamping voltage (27.6V), appropriate for applications with moderate transient energy levels. Both devices maintain identical reverse standoff and breakdown voltage specifications, ensuring equivalent voltage regulation characteristics within the 17V class.

Frequently Asked Questions (FAQ)

Q: Can SMAJ17A-TP be used as a direct replacement for SMA6F17A-M3/6B?

A: SMAJ17A-TP qualifies as a substitute when application requirements permit lower peak pulse current (14.5A versus 111A) and power dissipation (400W versus 4000W). Both parts maintain the same 17V reverse standoff voltage and 18.9V minimum breakdown voltage. Verify that your circuit's transient energy levels do not exceed the SMAJ17A-TP specifications before substitution.

Q: What are the package differences between these parts?

A: SMA6F17A-M3/6B uses DO-221AC (SlimSMA) packaging, while SMAJ17A-TP uses DO-214AC (SMA) packaging. Both are surface-mount configurations with different physical dimensions. Confirm PCB layout compatibility before selecting either package variant.

Q: Are both parts RoHS compliant?

A: Yes, both SMA6F17A-M3/6B and SMAJ17A-TP are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings, meeting current environmental and manufacturing standards.

Q: What is the primary difference in electrical performance?

A: The primary differences are peak pulse current capacity and clamping voltage. SMA6F17A-M3/6B handles 111A peak pulse current with 31.4V maximum clamping voltage, while SMAJ17A-TP handles 14.5A with 27.6V maximum clamping voltage. Both maintain identical voltage regulation at the 17V reverse standoff level.

Q: Can I use SMA6F17A-M3/6B in place of SMAJ17A-TP?

A: Yes, SMA6F17A-M3/6B can substitute for SMAJ17A-TP in applications where higher current and power handling capability is acceptable or beneficial. Verify that PCB layout and thermal management accommodate the DO-221AC package dimensions.