# R12.000.25

**Reomax** · Disposable Fuses · 1206

R12.000.25 from Reomax, 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 tin-plated silver end terminal of the 1206 (3.20 x 1.60 mm) fast-acting fuse, interchangeable with the other terminal since the fuse is not polarized, on a 1.52 mm x 2.03 mm pad. |
| 2 | 2 | passive | The other tin-plated silver end terminal of the 1206 (3.20 x 1.60 mm) fast-acting fuse, interchangeable with the other terminal since the fuse is not polarized, on a 1.52 mm x 2.03 mm pad. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Opening time at 1000% of rated current |  | 0.2 |  | 20 | ms | 1000% of amp rating; 250mA~30A range | 1 |
| Opening time at 350% of rated current |  |  |  | 5 | s | 350% of amp rating; 6A~30A range | 1 |
| Opening time at 100% of rated current |  | 4 |  |  | hours | 100% of amp rating; no opening (minimum hold time) | 1 |
| Insulation resistance (after opening) |  | 10000 |  |  | ohm | After opening; printed as 'Greater than 10,000 ohms' | 2 |
| Operating temperature |  | -55 |  | 125 | °C | Consult temperature rerating curve chart | 2 |
| Solder pot temperature |  |  |  | 260 | °C | Hand-solder; solder dwell time 10 seconds max | 2 |
| Rated current |  |  | 25 |  | A | Part R12.000.25 rating as printed in part table | 1 |

## CAD (KiCad official)

- Symbol: `R12.000.25`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `r12-000-25-etched.step` / `r12-000-25-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `r12-000-25.step` / `r12-000-25.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Reomax datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603165929467625472) (4 pp, sha256 `3027701f432c044b`, retrieved 2026-10-19, 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/r12-000-25-datasheet.pdf)