# SMF43CA

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

SMF43CA from AnBon, 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 | A1 | passive | Bidirectional TVS terminal 1 (no polarity); the SMF43CA has no cathode band, 43 V reverse standoff, 47.8-52.8 V breakdown at 1.0 mA, 69.4 V max clamping at 2.9 A. |
| 2 | A2 | passive | Bidirectional TVS terminal 2 (no polarity); the SMF43CA conducts and clamps in either direction, 200 W peak pulse power (10x1000us). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SMF43CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `smf43ca-etched.step` / `smf43ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf43ca.step` / `smf43ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [AnBon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911500493144064) (4 pp, sha256 `446f2844d4bbca04`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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](docs/smf43ca-datasheet.pdf)