# R12.100.0.75

**Reomax** · Disposable Fuses · 1206

R12.100.0.75 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 | First end-cap terminal of the 1206 slow-blow fuse (silver over-plated with tin, 0.51±0.25 mm); the fuse is non-polarized and rated 750mA, 72Vdc/63Vdc/32Vdc/24Vdc series. |
| 2 | 2 | passive | Second end-cap terminal of the 1206 slow-blow fuse (silver over-plated with tin, 0.51±0.25 mm); interchangeable with the other terminal, on a 1.52 mm by 2.03 mm pad per the pad layout. |

## 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 |
|---|---|---|---|---|---|---|---|
| Operating temperature |  | -55 |  | 125 | °C | Product characteristics, operating temperature; consult temperature rerating curve | 2 |
| Insulation resistance (after opening) |  | 10000 |  |  | Ω | After opening, per MIL-STD-202G Method 210F Condition D | 2 |
| Opening time at 350% of amp rating (250mA~750mA) |  |  |  | 5 | s | 250mA~750mA rating, 350% of amp rating | 1 |
| Opening time at 1000% of amp rating (250mA~30A) |  | 0.2 |  | 20 | ms | 250mA~30A rating, 1000% of amp rating | 1 |
| Time at 100% of amp rating before opening |  | 4 |  |  | h | 100% of amp rating; no opening, 4 hours min | 1 |
| Solder dwell time (hand solder) |  |  |  | 10 | s | Solder pot dwell time, hand-solder parameters | 2 |
| Solder pot temperature (hand solder) |  |  |  | 260 | °C | Solder pot temperature, hand-solder parameters | 2 |
| Reflow peak temperature (Pb-free) | TP |  |  | 260 | °C | Pb-free reflow peak temperature, printed as 260+0/-5°C | 2 |
| Rated current |  |  | 750 |  | mA | R12.100.0.75 (0.75A) rated current | 1 |
| Typical cold resistance |  |  | 680 |  | mΩ | R12.100.0.75 row; column mapping inferred from garbled text | 1 |
| Typical pre-arcing I²t | I²t |  | 0.15 |  | A²s | R12.100.0.75 row; column mapping inferred from garbled text | 1 |
| Typical voltage drop |  |  | 775 |  | mV | R12.100.0.75 row; column mapping inferred from garbled text | 1 |

## CAD (KiCad official)

- Symbol: `R12.100.0.75`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `r12-100-0-75-etched.step` / `r12-100-0-75-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `r12-100-0-75.step` / `r12-100-0-75.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/8603165932412297216) (4 pp, sha256 `c1f560e2a821a924`, retrieved 2026-10-18, 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/r12-100-0-75-datasheet.pdf)