SMF17A-M3-08 Equivalent & Substitute Parts

Part Overview

The SMF17A-M3-08 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage suppression applications, featuring a 17V reverse standoff voltage and 27.6V maximum clamping voltage. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts may be required due to inventory constraints, package availability, or specific application requirements while maintaining equivalent electrical performance within defined parameters.

Substiute Parts

SMF17A-M3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1097SMF17A-M3-08 Datasheet

Current PartRFQ

PTVS64VS1UTR,115

Nexperia USA Inc.In Stock: 12649PTVS64VS1UTR,115 Datasheet

MFR RecommendedRFQ

SMF17A-TP

Micro Commercial CoIn Stock: 5759SMF17A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF17A-M3-08 are evaluated based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 7.2A
• Power - Peak Pulse: 200W
• Unidirectional channel configuration
• Surface mount mounting type
• RoHS3 compliance

Substitute Parts Identified:

1. SMF17A-TP (Micro Commercial Co) — Identical electrical specifications with alternative package format (SOD-123FL vs. DO-219AB)
2. PTVS64VS1UTR,115 (Nexperia USA Inc.) — Different voltage class; not electrically equivalent for direct substitution

Parameter Comparison

Engineering Selection Recommendations

SMF17A-TP (Recommended Substitute): The SMF17A-TP is electrically equivalent to the SMF17A-M3-08, matching all critical voltage and current specifications. Both parts maintain identical reverse standoff voltage (17V), clamping voltage (27.6V), and peak pulse current (7.2A). The primary difference is the package format: SMF17A-TP uses SOD-123FL while the main part uses DO-219AB (SMF). Both are surface-mount packages with RoHS3 compliance and active production status. Selection between these two depends on PCB layout compatibility and package footprint requirements.

PTVS64VS1UTR,115 (Not Recommended for Direct Substitution): The PTVS64VS1UTR,115 operates at a significantly higher voltage class (64V reverse standoff, 103V clamping) and lower peak pulse current (3.9A). This part is not electrically equivalent and is unsuitable for applications designed for the 17V/27.6V specification of the SMF17A-M3-08. The PTVS64VS1UTR,115 includes automotive qualification (AEC-Q101) and extended temperature range (-55 to 185°C), which may be beneficial for specific applications but does not address the voltage mismatch.

Frequently Asked Questions (FAQ)

Q: Can SMF17A-TP be used as a direct replacement for SMF17A-M3-08? A: Yes. Both parts have identical electrical specifications: 17V reverse standoff voltage, 27.6V clamping voltage, and 7.2A peak pulse current. The difference is package format (SOD-123FL vs. DO-219AB). Verify PCB footprint compatibility before substitution.

Q: Why is PTVS64VS1UTR,115 listed as a substitute if it has different voltage ratings? A: PTVS64VS1UTR,115 is not a functional substitute for the SMF17A-M3-08. The voltage specifications differ significantly (64V vs. 17V standoff). This part is included for reference only and should not be used in applications requiring 17V protection.

Q: What are the package differences between SMF17A-M3-08 and SMF17A-TP? A: SMF17A-M3-08 uses DO-219AB (SMF) package, while SMF17A-TP uses SOD-123FL package. Both are surface-mount configurations. Confirm PCB layout and reflow profile compatibility with your manufacturing process.

Q: Are both substitute options RoHS3 compliant? A: Yes. SMF17A-TP and PTVS64VS1UTR,115 are both ROHS3 compliant, matching the compliance status of the main part SMF17A-M3-08.

Q: What is the operating temperature difference between these parts? A: SMF17A-M3-08 and SMF17A-TP both operate from -65 to 175°C. PTVS64VS1UTR,115 has an extended range of -55 to 185°C, but this does not compensate for its incompatible voltage specifications.