# YLRY12-2-300F

**Shenzhen Yezhan Elec** · Current Sense Resistors / Shunt Resistors · 2512

YLRY12-2-300F from Shenzhen Yezhan Elec, 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 | Shenzhen Yezhan Elec |
| 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 value range (YLRY12, 2512) | R | 0.5 |  | 500 | mΩ | YLRY12 resistance range | 3 |
| Resistance tolerance (code F) |  | -1 |  | 1 | % | Tolerance F: ±1% | 3 |
| Temperature coefficient (TCR) |  | -50 |  | 50 | ppm/℃ | Resistance 2~500 mΩ, ±50 ppm/℃ | 3 |
| Rated power | P |  |  | 2 | W | P70℃ (rated power at 70℃ for 2W order code) | 3 |
| Operating temperature range |  | -55 |  | 170 | ℃ | Operating temperature; power rated at P70℃ | 3 |
| Insulation resistance |  | 100 |  |  | MΩ |  | 1 |
| Solderability (coverage) |  | 95 |  |  | % | 245℃±5℃, 2s±0.5s, J-STD-202; 95% coverage minimum | 3 |
| Temperature cycling resistance change |  | -0.5 |  | 0.5 | % | 1000 cycles (-55℃ to +150℃), JESD22 Method JA-104 | 3 |
| ESD resistance change |  | -1 |  | 1 | % | Direct contact ±6kV; air discharge ±12kV, ±16kV, ±25kV; AEC-Q200 REV D | 3 |
| High temperature exposure resistance change |  | -1 |  | 1 | % | 1000 hrs @ T=170℃, unpowered, MIL-STD-202 Method 108 | 3 |
| Moisture resistance resistance change |  | -1 |  | 1 | % | t=24 hrs/cycle, unpowered, MIL-STD-202 Method 106 | 3 |
| Biased humidity resistance change |  | -1 |  | 1 | % | 1000 hrs 85℃/85%RH, 10% of operating power, MIL-STD-202 Method 103 | 3 |
| Operational life resistance change |  | -1 |  | 1 | % | Steady state TA=70℃ at rated power, MIL-STD-202 Method 108 | 3 |
| Resistance to soldering heat resistance change |  | -0.5 |  | 0.5 | % | 260℃±5℃, 10s±1s, MIL-STD-202 Method 210 | 3 |
| Short time overload resistance change |  | -1 |  | 1 | % | 5× rated power for 5 s, MIL-STD-202 Method 201 | 3 |
| Shock resistance change |  | -1 |  | 1 | % | 100 g, 6 ms, 3 times each orientation (18 total), MIL-STD-202 Method 213 | 3 |
| Vibration resistance change |  | -1 |  | 1 | % | 5 g's for 20 min, 12 cycles each of 3 orientations, 10-2000 Hz, MIL-STD-202 Method 204 | 3 |

## CAD (KiCad official)

- Symbol: `YLRY12-2-300F`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `ylry12-2-300f-etched.step` / `ylry12-2-300f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ylry12-2-300f.step` / `ylry12-2-300f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen Yezhan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603386671400296448) (7 pp, sha256 `25c896c0861e1c44`, 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/ylry12-2-300f-datasheet.pdf)