# HoSRX1206-2W-1mR-1%

**Milliohm** · Current Sense Resistors / Shunt Resistors · 1206

HoSRX1206-2W-1mR-1% from Milliohm, 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 1 mΩ ±1% Manganin bare alloy resistor, rated 2 W and 44.72 A, with the 3.2 mm body length (W) running between the two terminals. |
| 2 | 2 | passive | Second terminal of the 1 mΩ ±1% Manganin bare alloy resistor, rated 2 W and 44.72 A, interchangeable with the other terminal, with a recommended 1206 solder pad of L 4 mm, A 2.1 mm, B 1.2 mm. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Milliohm |
| Package | 1206 |
| Category | Resistors |
| Pins | 2 |

## Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance |  |  | 1 |  | mΩ | nominal, catalog attribute (LCSC C18724163) | catalog |
| Tolerance |  | -1 |  | 1 | % | catalog attribute (LCSC C18724163) | catalog |
| Rated power |  |  |  | 2 | W | catalog attribute (LCSC C18724163) | catalog |

## CAD (KiCad official)

- Symbol: `HoSRX1206-2W-1mR-1%`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `hosrx1206-2w-1mr-1-etched.step` / `hosrx1206-2w-1mr-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hosrx1206-2w-1mr-1.step` / `hosrx1206-2w-1mr-1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Milliohm datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758016791207383040) (7 pp, sha256 `10773f70500171de`, retrieved 2026-10-22, 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/hosrx1206-2w-1mr-1-datasheet.pdf)