component

SMF33A

Public Made by Adom

by adom

DOWO ESD And Surge Protection (TVS/ESD), SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcircuit protectionsmf33afactory-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 20d ago
viewers smf33a: viewers · Ray 20d ago
package.json Publish 0.1.0 · Ray 20d ago
page.json Set visibility: public · Ray 20d ago
README.md Publish 0.1.0 · Ray 20d ago
smf33a-etched.glb smf33a: factory component page (tier=lcsc) · Ray 20d ago
smf33a-etched.step smf33a: factory component page (tier=lcsc) · Ray 20d ago
smf33a-hero.glb smf33a: hero GLB from the etched model (keeps the MPN mark) · Ray 20d ago
smf33a-hero.overlay.json Publish 0.1.0 · Ray 20d ago
smf33a.glb Publish 0.1.0 · Ray 20d ago
smf33a.kicad_mod Publish 0.1.0 · Ray 20d ago
smf33a.kicad_sym Publish 0.1.0 · Ray 20d ago
smf33a.lbr Publish 0.1.0 · Ray 20d ago
smf33a.step Publish 0.1.0 · Ray 20d ago

SMF33A

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

SMF33A from DOWO, 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 terminal marked by the color band on the SMF33A unidirectional TVS (VRWM 33.0 V, VBR 36.70-40.60 V at 1 mA, max clamping 53.3 V at IPP 3.75 A).
2 A passive Anode terminal at the end opposite the color band of the SMF33A unidirectional TVS (200 W peak pulse power, 10/1000 µs).

Key specifications

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

CAD (KiCad official)

  • Symbol: SMF33A
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: smf33a-etched.step / smf33a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smf33a.step / smf33a.glb are the bare package body.

Provenance

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

  • Datasheet: DOWO datasheet (3 pp, sha256 54716207bd6ae9d1, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (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