# HoYLR2512-2W-25mR-1%

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

HoYLR2512-2W-25mR-1% from Milliohm, 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 | First end terminal of the 25 mΩ ±1% 2 W alloy current-sense resistor (terminal width C 0.9±0.2 mm, recommended pad 4.0±0.1 × 2.1±0.1 mm). |
| 2 | 2 | passive | Second end terminal of the 25 mΩ ±1% 2 W alloy current-sense resistor, interchangeable with the first (max rated current 8.94 A, operating -55 to +170 °C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Milliohm |
| Package | 2512 |
| Category | Resistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance |  | -1 |  | 1 | % | Part number tolerance code 1% (±1%) | 3 |
| Temperature coefficient (TCR) |  | -50 |  | 50 | ppm/℃ |  | 3 |
| Resistance change, temperature coefficient test | ΔR |  |  | 1 | % | +25℃~+125℃; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, resistance-to-soldering heat | ΔR |  |  | 0.5 | % | 270℃±5℃ solder bath, 10s±1s; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, bending test | ΔR |  |  | 0.5 | % | Bending distance 2mm, hold 60s±5s; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, long-term high temperature | ΔR |  |  | 1 | % | 170℃ storage, 1000h; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, long-term low temperature | ΔR |  |  | 0.5 | % | -55℃ storage, 1000h; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, temperature cycling | ΔR |  |  | 0.5 | % | -55℃ 30min to room temp 5min to 155℃ 30min, 1000 cycles; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, long-term endurance | ΔR |  |  | 1 | % | 70℃±2℃, 1000h, rated power, 1.5h on / 0.5h off; plus ±0.05mΩ absolute term as printed | 5 |
| Resistance change, long-term damp heat | ΔR |  |  | 1 | % | 85℃±2℃, 85%±3%RH, 1000h, rated power, 1.5h on / 0.5h off; plus ±0.05mΩ absolute term as printed | 5 |
| Insulation resistance |  | 100 |  |  | MΩ | 100V±15V DC applied between electrode and substrate, held 60s | 5 |
| Solder coverage (solderability) |  | 95 |  |  | % | 245℃±5℃ tin bath, 2s±0.5s; electrode tin coverage area | 5 |
| Operating temperature range |  | -55 |  | 170 | ℃ |  | 3 |
| Maximum rated current |  |  |  | 8.94 | A |  | 3 |
| Rated power |  |  | 2 |  | W | Rated at 70℃ resistor temperature; derate above 70℃ per power curve | 4 |
| Nominal resistance | R |  | 25 |  | mΩ |  | 3 |

## CAD (KiCad official)

- Symbol: `HoYLR2512-2W-25mR-1%`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `hoylr2512-2w-25mr-1-etched.step` / `hoylr2512-2w-25mr-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hoylr2512-2w-25mr-1.step` / `hoylr2512-2w-25mr-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/8773984746529398784) (7 pp, sha256 `1ff714f102f61e8b`, 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` (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/hoylr2512-2w-25mr-1-datasheet.pdf)