SMF17A-T13 Equivalent & Substitute Parts

Part Overview

The SMF17A-T13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This surface-mount component operates with a 17V reverse standoff voltage and provides 200W peak pulse power dissipation in a compact SOD-123F package. The part is currently active in production and RoHS3 compliant. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining equivalent electrical and mechanical performance.

Substiute Parts

SMF17A-T13

Littelfuse Inc.In Stock: 737SMF17A-T13 Datasheet

Current PartRFQ

SMF17A

Diotec SemiconductorIn Stock: 2034SMF17A Datasheet

DirectRFQ

SMF17A-TP

Micro Commercial CoIn Stock: 5759SMF17A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF17A-T13 are qualified based on strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Package / Case: SOD-123F
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional
• RoHS3 Compliance

The identified substitutes maintain these core electrical and mechanical specifications. Variations in peak pulse current (7.2A to 7.25A) and operating temperature ranges fall within acceptable tolerances for general-purpose TVS applications and do not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SMF17A-T13, SMF17A, and SMF17A-TP—are active production components with RoHS3 compliance and equivalent electrical specifications. Selection among these substitutes may be based on:

• Inventory availability and lead time requirements
• Manufacturer preference or qualification requirements
• Operating temperature range requirements (SMF17A-TP supports -65°C to 175°C; SMF17A-T13 supports -55°C to 150°C; SMF17A supports -50°C to 150°C)
• Moisture sensitivity level (MSL) specifications where applicable
• REACH compliance documentation availability

All parts are suitable for general-purpose transient voltage suppression applications with identical voltage clamping and power dissipation characteristics.

Frequently Asked Questions (FAQ)

Q: Can SMF17A (Diotec) be used as a direct replacement for SMF17A-T13 (Littelfuse)?

A: Yes. Both parts share identical reverse standoff voltage (17V), clamping voltage (27.6V), power rating (200W), and SOD-123F package specifications. The peak pulse current difference (7.25A vs 7.2A) is negligible for general-purpose applications.

Q: What is the difference between SMF17A-TP and SMF17A-T13?

A: Both parts have identical electrical specifications. SMF17A-TP supports a wider operating temperature range (-65°C to 175°C vs -55°C to 150°C) and has unlimited moisture sensitivity level (MSL 1). Selection depends on application temperature requirements and environmental conditions.

Q: Are all substitute parts in the same package?

A: Yes. All three parts use the SOD-123F surface-mount package, ensuring mechanical and thermal compatibility on PCBs designed for the SMF17A-T13.

Q: Do all parts meet RoHS3 compliance?

A: Yes. SMF17A-T13, SMF17A, and SMF17A-TP are all RoHS3 compliant.

Q: What determines whether a part can substitute for SMF17A-T13?

A: Substitution is determined by matching reverse standoff voltage (17V), clamping voltage (27.6V), power rating (200W), package type (SOD-123F), and unidirectional zener configuration. All identified substitutes meet these criteria.