# CFS12V3T4R0

**TA I Tech** · Disposable Fuses · 1206

CFS12V3T4R0 from TA I 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 | One end termination (Cu/Ni/Sn plated) of the fuse element, 0.5±0.3 mm wide; part is rated 4.00A, DC 32V, 15.5 mΩ ±25%, breaking capacity 50A at DC32V. |
| 2 | 2 | passive | Other end termination (Cu/Ni/Sn plated) of the fuse element, interchangeable with the first as the fuse is non-polarized; opens within 5 s at 250% of rated current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TA I Tech |
| Package | 1206 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `CFS12V3T4R0`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `cfs12v3t4r0-etched.step` / `cfs12v3t4r0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cfs12v3t4r0.step` / `cfs12v3t4r0.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TA I Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588909280347373568) (20 pp, sha256 `4ee1eb649c7afc81`, 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/cfs12v3t4r0-datasheet.pdf)