component

SMF33CA

Public Made by Adom

by adom

hongjiacheng Electrostatic 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.

componenttvs-fuse-board level protectionsmf33cafactory-2.0.0extractor-text
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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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docs Publish 0.1.0 · Ray 12d ago
viewers smf33ca: viewers · Ray 12d ago
package.json Publish 0.1.0 · Ray 12d ago
page.json Set visibility: public · Ray 12d ago
README.md Publish 0.1.0 · Ray 12d ago
smf33ca-etched.glb Publish 0.1.0 · Ray 12d ago
smf33ca-etched.step smf33ca: factory component page (tier=lcsc) · Ray 12d ago
smf33ca-hero.glb smf33ca: hero GLB from the etched model (keeps the MPN mark) · Ray 12d ago
smf33ca-hero.overlay.json Publish 0.1.0 · Ray 12d ago
smf33ca.glb Publish 0.1.0 · Ray 12d ago
smf33ca.kicad_mod Publish 0.1.0 · Ray 12d ago
smf33ca.kicad_sym smf33ca: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 12d ago
smf33ca.lbr smf33ca: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 12d ago
smf33ca.step Publish 0.1.0 · Ray 12d ago

SMF33CA

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

SMF33CA from hongjiacheng, 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 1 passive Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

Key specifications

Parameter Value
Manufacturer hongjiacheng
Package SOD-123FL
Category TVS/Fuse/Board Level 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
Maximum clamping voltage VC 53.3 V @IPP = 3.8 A 2
Reverse leakage current IR 1 µA @VRWM 2
Peak pulse power dissipation PPPM 200 W 10/1000µs waveform (Fig.1)(Note 1), (Note 2) 1
Power dissipation on infinite heat sink PM(AV) 0.4 W at TL=75°C 1
Peak forward surge current IFSM 30 A 8.3ms single half sine wave (Note 3) 1
Operating junction and storage temperature range TJ, TSTG -55 150 ℃ 1
Breakdown voltage tolerance -5 5 % Suffix 'A' denotes 5% tolerance device (Note 1) 3
Typical maximum temperature coefficient of breakdown voltage ΔVBR 0.1 % of VBR@25℃ per ℃ ΔVBR = 0.1% ×VBR@25℃ ×ΔT 1
Typical thermal resistance junction to lead RθJ-L 100 ℃/W 1
Typical thermal resistance junction to ambient RθJ-A 220 ℃/W 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 tin •Matte tin lead-free Plated •Halogen free and RoHS compliant 1

CAD (KiCad official)

  • Symbol: SMF33CA
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123FL (KiCad packages3D, STEP)
  • 3D model files: smf33ca-etched.step / smf33ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smf33ca.step / smf33ca.glb are the bare package body.

Provenance

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

  • Datasheet: hongjiacheng datasheet (5 pp, sha256 c8f137df222c1c36, retrieved 2026-10-28, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal 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