# HoYLR2512-2W-27mR-1%

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

HoYLR2512-2W-27mR-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 | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## 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 (suffix -1%) |  | -1 |  | 1 | % |  | 3 |
| Temperature coefficient of resistance (TCR) | TCR | -50 |  | 50 | ppm/℃ |  | 3 |
| Rated power |  |  |  | 2 | W |  | 3 |
| Maximum rated current |  |  |  | 8.6 | A |  | 3 |
| Operating temperature range |  | -55 |  | 170 | ℃ |  | 3 |
| Insulation resistance |  | 100 |  |  | MΩ | 100V±15V DC applied between electrode and substrate, held 60 s | 5 |
| Solderability: solder coverage of electrode |  | 95 |  |  | % | 245℃±5℃ solder bath, 2 s±0.5 s | 5 |
| Pre-heat zone temperature |  | 150 |  | 180 | ℃ | 90±30 s | 4 |
| Soldering zone temperature |  | 230 |  |  | ℃ | 30±10 s | 4 |
| Storage environment temperature |  | 5 |  | 35 | ℃ | Storage | 7 |
| Storage environment humidity |  |  |  | 65 | %RH | Storage, keep as low as possible | 7 |
| ΔR after temperature coefficient test (percent part) | ΔR | -1 |  | 1 | % | +25℃~+125℃ | 5 |
| ΔR after temperature coefficient test (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | +25℃~+125℃ | 5 |
| ΔR after heat resistance test (percent part) | ΔR | -0.5 |  | 0.5 | % | 270℃±5℃ solder bath, 10 s±1 | 5 |
| ΔR after heat resistance test (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | 270℃±5℃ solder bath, 10 s±1 | 5 |
| ΔR after bending test (percent part) | ΔR | -0.5 |  | 0.5 | % | Bending distance 2 mm, held 60 s±5 s | 5 |
| ΔR after bending test (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | Bending distance 2 mm, held 60 s±5 s | 5 |
| ΔR after long-term high temperature (percent part) | ΔR | -1 |  | 1 | % | 170℃, 1000 h | 5 |
| ΔR after long-term high temperature (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | 170℃, 1000 h | 5 |
| ΔR after long-term low temperature (percent part) | ΔR | -0.5 |  | 0.5 | % | -55℃, 1000 h | 5 |
| ΔR after long-term low temperature (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | -55℃, 1000 h | 5 |
| ΔR after temperature cycling (percent part) | ΔR | -0.5 |  | 0.5 | % | -55℃ 30 min to room temp 5 min to 155℃ 30 min, 1000 cycles | 5 |
| ΔR after temperature cycling (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | -55℃ 30 min to room temp 5 min to 155℃ 30 min, 1000 cycles | 5 |
| ΔR after long-term endurance (percent part) | ΔR | -1 |  | 1 | % | 70℃±2℃, 1000 h, rated power, 1.5 h on / 0.5 h off | 5 |
| ΔR after long-term endurance (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | 70℃±2℃, 1000 h, rated power, 1.5 h on / 0.5 h off | 5 |
| ΔR after long-term humidity (percent part) | ΔR | -1 |  | 1 | % | 85℃±2℃, 85%±3%RH, 1000 h, rated power, 1.5 h on / 0.5 h off | 5 |
| ΔR after long-term humidity (absolute part) | ΔR | -0.05 |  | 0.05 | mΩ | 85℃±2℃, 85%±3%RH, 1000 h, rated power, 1.5 h on / 0.5 h off | 5 |

## CAD (KiCad official)

- Symbol: `HoYLR2512-2W-27mR-1%`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `hoylr2512-2w-27mr-1-etched.step` / `hoylr2512-2w-27mr-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hoylr2512-2w-27mr-1.step` / `hoylr2512-2w-27mr-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/8773985954636292096) (7 pp, sha256 `a04ca76b5cd4396f`, retrieved 2026-10-17, 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`, primary `two-terminal convention` (convention), consensus `off` (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-27mr-1-datasheet.pdf)