component
SMF4L48CA
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), SOD-123FL. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSMF4L48CA
Littelfuse · ESD And Surge Protection (TVS/ESD) · SOD-123FL
SMF4L48CA 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 | A1 | passive | Bi-directional TVS terminal with no polarity (SMF4L48CA: VR 48 V, VBR 53.30-58.90 V at 1 mA, VC 77.4 V at Ipp 5.2 A); connects to the protected line or ground interchangeably with pin 2. |
| 2 | A2 | passive | Bi-directional TVS terminal with no polarity (SMF4L48CA: VR 48 V, VBR 53.30-58.90 V at 1 mA, VC 77.4 V at Ipp 5.2 A); connects to the protected line or ground interchangeably with pin 1. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SOD-123FL |
| Category | Circuit Protection |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
SMF4L48CA - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf4l48ca-etched.step/smf4l48ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf4l48ca.step/smf4l48ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
7971ab636790fc84, retrieved 2026-10-12, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).