# S1206-F-4.0A

**SART Nanjing Sart Tech** · Disposable Fuses · 1206

S1206-F-4.0A from SART Nanjing Sart Tech, in a 1206. 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 | First terminal of the non-polarized fast-acting fuse, rated 4.0 A and 32 V, with interrupting rating 35 A at 32 V DC and typical cold DCR of 15.5 mΩ. |
| 2 | 2 | passive | Second terminal of the non-polarized fast-acting fuse, rated 4.0 A and 32 V, with interrupting rating 35 A at 32 V DC and typical cold DCR of 15.5 mΩ. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SART Nanjing Sart Tech |
| Package | 1206 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `S1206-F-4.0A`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `s1206-f-4-0a-etched.step` / `s1206-f-4-0a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `s1206-f-4-0a.step` / `s1206-f-4-0a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SART Nanjing Sart Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918628201222144) (6 pp, sha256 `ab45185303fa6d6b`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/s1206-f-4-0a-datasheet.pdf)