component

SMF18CA

Public Made by Adom

by adom

PTTC Polytronics Tech ESD And Surge Protection (TVS/ESD), SOD-123. 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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SMF18CA

PTTC Polytronics Tech · ESD And Surge Protection (TVS/ESD) · SOD-123

SMF18CA from PTTC Polytronics Tech, in a SOD-123. 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 PTTC Polytronics Tech
Package SOD-123
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 (min) at IT VBR 20 V @ IT = 1 mA (test current, mA) 2
Breakdown voltage (max) at IT VBR 22.1 V @ IT = 1 mA (test current, mA) 2
VBR voltage tolerance (blank suffix = 10%) VBR -10 10 % Suffix blank = 10%; 'A' suffix = 5% (not this MPN) 1
Maximum clamping voltage VC 29.2 V @ IPP = 6.85 A 2
Maximum peak pulse current IPP 6.85 A Paired with VC = 29.2 V in the same row 2
Maximum reverse leakage current IR 1 A @ VR = 18 V; unit as printed 2
Peak pulse power dissipation PPPM 200 W 10/1000s waveform (Note 1, Fig.1); printed as 'Min 200' 1
Peak forward surge current IFSM 20 A 8.3 ms single half sine wave, Note 2, Fig.6 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1
Reverse stand-off voltage VR 18 V Printed as the stand-off voltage for SMF18CA (no min or max label) 2

CAD (KiCad official)

  • Symbol: SMF18CA
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: smf18ca-etched.step / smf18ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smf18ca.step / smf18ca.glb are the bare package body.

Provenance

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

  • Datasheet: PTTC Polytronics Tech datasheet (6 pp, sha256 1e7494c48de9670b, retrieved 2026-10-18, 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