component

TPSMF4L28A

Public Made by Adom

by adom

Littelfuse ESD And Surge Protection (TVS/ESD), SOD-123FL. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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TPSMF4L28A

Littelfuse · ESD And Surge Protection (TVS/ESD) · SOD-123FL

TPSMF4L28A from Littelfuse, in a SOD-123FL. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package SOD-123FL
Category Circuit Protection
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Breakdown voltage VBR (min) VBR 31.1 V @ IT = 1 mA (VBR measured after IT applied for 300µs) 2
Breakdown voltage VBR (max) VBR 34.4 V @ IT = 1 mA (VBR measured after IT applied for 300µs) 2
Maximum reverse leakage current IR 1 µA @ VR = 28 V 2
Maximum peak pulse current Ipp 8.8 A Surge 10/1000µs exponential waveform, derated per Fig.3 2
Maximum clamping voltage VC 45.4 V @ Ipp = 8.8 A 2
VBR temperature coefficient αT 0.1 % VBR @TJ = VBR@25°C x (1+αT x (TJ-25)); typical value 1
Peak pulse power dissipation, 8/20µs PPPM 2000 W 8/20µs at TA=25°C (Note 1, Note 2) 1
Peak pulse power dissipation, 10/1000µs PPPM 400 W 10/1000µs at TA=25°C (Note 1, Note 3) 1
Power dissipation on infinite heat sink PD 1 W TL = 50°C 1
Thermal resistance junction to ambient RƟJA 220 °C/W 1
Thermal resistance junction to lead RƟJL 100 °C/W 1
Operating and storage temperature range TJ,TSTG -55 150 °C 1
Peak reflow temperature TP 260 °C Lead-free reflow; do not exceed 260°C 5

CAD (KiCad official)

  • Symbol: TPSMF4L28A
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123FL (KiCad packages3D, STEP)
  • 3D model files: tpsmf4l28a-etched.step / tpsmf4l28a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpsmf4l28a.step / tpsmf4l28a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Littelfuse datasheet (6 pp, sha256 0538aa3240013aeb, retrieved 2026-10-15, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF