component
SMF4L12CA
Public Made by Adomby adom
Littelfuse TVS, 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.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 7d ago |
| viewers | 7d ago |
| package.json | 7d ago |
| page.json | 7d ago |
| README.md | 7d ago |
| smf4l12ca-etched.glb | 7d ago |
| smf4l12ca-etched.step | 7d ago |
| smf4l12ca-hero.glb | 7d ago |
| smf4l12ca-hero.overlay.json | 7d ago |
| smf4l12ca.glb | 7d ago |
| smf4l12ca.kicad_mod | 7d ago |
| smf4l12ca.kicad_sym | 7d ago |
| smf4l12ca.lbr | 7d ago |
| smf4l12ca.step | 7d ago |
SMF4L12CA
Littelfuse · TVS · SOD-123FL
SMF4L12CA from Littelfuse, 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 | Littelfuse |
| 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 (bi-directional, SMF4L12CA) | VBR | 13.3 | 14.7 | V | @ IT = 1 mA; VBR measured after IT applied for 300µs | 2 | |
| Maximum Reverse Leakage | IR | 1 | µA | @ VR = 12 V | 2 | ||
| Maximum Peak Pulse Current | Ipp | 20.1 | A | 10/1000µs surge waveform (Note 2) | 2 | ||
| Maximum Clamping Voltage | VC | 19.9 | V | @ Ipp = 20.1 A, 10/1000µs surge waveform (Note 2) | 2 | ||
| Peak Pulse Power Dissipation (8/20µs) | PPPM | 2000 | W | 8/20µs (Note 2) | 1 | ||
| Peak Pulse Power Dissipation (10/1000µs) | PPPM | 400 | W | 10/1000µs (Note 3) | 1 | ||
| Operating and Storage Temperature Range | TJ,TSTG | -55 | 150 | °C | 1 | ||
| VBR Voltage Tolerance (suffix A) | VBR | -5 | 5 | % | Decoded from part-numbering table: 5% VBR voltage tolerance (suffix A) | 6 | |
| Power Dissipation on Infinite Heat Sink | PD | 1 | W | at TL = 50ºC | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 220 | °C/W | Junction to ambient | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 100 | °C/W | Junction to lead | 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 | 1 |
CAD (KiCad official)
- Symbol:
SMF4L12CA - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf4l12ca-etched.step/smf4l12ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf4l12ca.step/smf4l12ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
7971ab636790fc84, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).