component

SMF120A

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.

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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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smf120a-etched.step smf120a: factory component page (tier=lcsc) · Ray 10d ago
smf120a-hero.glb smf120a: hero GLB from the etched model (keeps the MPN mark) · Ray 10d ago
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SMF120A

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

SMF120A 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 133 153 V @IT = 1 mA, TA=25℃ 2
Clamping Voltage VC 193 V @IPP = 1.04 A, TA=25℃ 2
Reverse Leakage Current IR 1 µA @VRWM = 120 V, TA=25℃ 2
Peak Power Dissipation PPK 200 W 1
Peak Pulse Current IPP 1.04 A SMF120A row of table 2
Thermal Resistance Junction-Ambient RθJA 125 ℃/W 1
Junction/Storage Temperature TJ,Tstg -55 150 ℃ 1
Reverse Stand-off Work Voltage VRWM 120 V SMF120A 2

CAD (KiCad official)

  • Symbol: SMF120A
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123FL (KiCad packages3D, STEP)
  • 3D model files: smf120a-etched.step / smf120a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smf120a.step / smf120a.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 2026-10-22, 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