# LR2512-22R005F4

**RALEC** · Current Sense Resistors/Shunt Resistors · 2512

LR2512-22R005F4 from RALEC, in a 2512. 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 | Resistor terminal 1 of the 2-terminal LR2512 metal alloy 5mΩ ±1% 2W current-sense resistor, non-polarized and interchangeable with terminal 2. |
| 2 | 2 | passive | Resistor terminal 2 of the 2-terminal LR2512 metal alloy 5mΩ ±1% 2W current-sense resistor, non-polarized and interchangeable with terminal 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RALEC |
| Package | 2512 |
| Category | Resistors |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `LR2512-22R005F4`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `lr2512-22r005f4-etched.step` / `lr2512-22r005f4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lr2512-22r005f4.step` / `lr2512-22r005f4.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RALEC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588898866486267904) (27 pp, sha256 `e3e016cf625843e0`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/lr2512-22r005f4-datasheet.pdf)