component

SMF33A CM

Public Made by Adom

by adom

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

componentcircuit protectionsmf33a cmfactory-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 10d ago
viewers smf33a-cm: viewers · Ray 10d ago
package.json Publish 0.1.0 · Ray 10d ago
page.json Set visibility: public · Ray 10d ago
README.md Publish 0.1.0 · Ray 10d ago
smf33a-cm-etched.glb Publish 0.1.0 · Ray 10d ago
smf33a-cm-etched.step smf33a-cm: factory component page (tier=lcsc) · Ray 10d ago
smf33a-cm-hero.glb smf33a-cm: hero GLB from the etched model (keeps the MPN mark) · Ray 10d ago
smf33a-cm-hero.overlay.json Publish 0.1.0 · Ray 10d ago
smf33a-cm.glb Publish 0.1.0 · Ray 10d ago
smf33a-cm.kicad_mod Publish 0.1.0 · Ray 10d ago
smf33a-cm.kicad_sym Publish 0.1.0 · Ray 10d ago
smf33a-cm.lbr Publish 0.1.0 · Ray 10d ago
smf33a-cm.step Publish 0.1.0 · Ray 10d ago

SMF33A CM

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

SMF33A CM from JUXING, 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 Cathode passive Cathode of the unidirectional SMF33A TVS diode (marked CM), with 33 V working standoff voltage and 53.3 V maximum clamping voltage at 3.8 A.
2 Anode passive Anode of the unidirectional SMF33A TVS diode, which is normally connected to the ground or return side of the protected line.

Key specifications

Parameter Value
Manufacturer JUXING
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 36.7 40.6 V @ IT = 1 mA 2
Reverse leakage current IR 1 μA @ VRWM 2
Max clamp voltage VC 53.3 V @ IPP = 3.8 A 2
Peak pulse current IPP 3.8 A 10/1000 us waveform 2
Working peak reverse voltage VRWM 33 V 2
Test current IT 1 mA 2
Peak pulse power dissipation PPPM 200 W TA=25°C, 10/1000us (Note 1,2,5, Fig1) 1
Peak forward surge current IFSM 20 A 8.3ms single half sinewave (Note 3), UNI 1
Steady state power dissipation PM(AV) 1 W Note 4, TL=75°C 1
Operating junction and storage temperature range TJ,TSTG -55 150 °C 1
Typical thermal resistance RθJA 180 °C 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper 2. Mounted on 5mm copper pads to each terminal 1

CAD (KiCad official)

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

Provenance

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

  • Datasheet: JUXING datasheet (4 pp, sha256 3b5a2aa506e6a0b2, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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