# 04661.25NRHF

**Littelfuse** · Disposable Fuses · 1206

04661.25NRHF from Littelfuse, 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 of two interchangeable tin-plated fuse terminations; for the 1.25 A rating the datasheet gives 63 V max, 50 A interrupting rating at 63 V AC/DC, and about 0.057 ohm nominal cold resistance. |
| 2 | 2 | passive | Second of two interchangeable tin-plated fuse terminations, connected through the fuse element to the other terminal (1.25 A, 63 V max, 50 A interrupting rating at 63 V AC/DC). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | 1206 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `04661.25NRHF`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `04661-25nrhf-etched.step` / `04661-25nrhf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `04661-25nrhf.step` / `04661-25nrhf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588903719714480129) (3 pp, sha256 `59e7ee52ef17c1fe`, 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/04661-25nrhf-datasheet.pdf)