component

SMF45A

Public Made by Adom

by adom

FOSAN 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.

componentcircuit protectionsmf45afactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 11d ago
viewers smf45a: symbol repaired (D_Zener, cathode pad 1) · Ray 1d ago
package.json Publish 0.1.0 · Ray 11d ago
page.json Set visibility: public · Ray 11d ago
README.md Publish 0.1.0 · Ray 11d ago
smf45a-etched.glb Publish 0.1.0 · Ray 11d ago
smf45a-etched.step smf45a: factory component page (tier=lcsc) · Ray 11d ago
smf45a-hero.glb smf45a: hero GLB from the etched model (keeps the MPN mark) · Ray 11d ago
smf45a-hero.overlay.json Publish 0.1.0 · Ray 11d ago
smf45a.glb Publish 0.1.0 · Ray 11d ago
smf45a.kicad_mod Publish 0.1.0 · Ray 11d ago
smf45a.kicad_sym smf45a: symbol repaired (D_Zener, cathode pad 1) · Ray 1d ago
smf45a.lbr smf45a: symbol repaired (D_Zener, cathode pad 1) · Ray 1d ago
smf45a.step Publish 0.1.0 · Ray 11d ago

SMF45A

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

SMF45A from FOSAN, 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 FOSAN
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 50 57.5 V IT = 1 mA 2
Clamping voltage VC 72.7 V at IPP = 2.75 A 2
Peak pulse current IPP 2.75 A 2
Reverse leakage current IR 1 µA at VRWM = 45 V 2
Reverse stand-off working voltage VRWM 45 V 2
Peak power dissipation PPK 200 W 1
Junction/storage temperature TJ,Tstg -55 150 ℃ 1
Thermal resistance junction-ambient RθJA 125 ℃/W junction-ambient 1

CAD (KiCad official)

  • Symbol: SMF45A
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123FL (KiCad packages3D, STEP)
  • 3D model files: smf45a-etched.step / smf45a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smf45a.step / smf45a.glb are the bare package body.

Provenance

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

  • Datasheet: FOSAN datasheet (4 pp, sha256 361a736b995ddeab, retrieved 2026-10-26, 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