# YLRY12-3-70F

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

YLRY12-3-70F 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 | Resistor terminal 1 (non-polarized, interchangeable with terminal 2) of the 70 mΩ ±1% 3 W YLRY12 current-sense element, rated -55℃ to 170℃, with a recommended pad of L 4.1 mm, a 2.1 mm and c 4 mm. |
| 2 | 2 | passive | Resistor terminal 2 (non-polarized, interchangeable with terminal 1) of the 70 mΩ ±1% 3 W YLRY12 current-sense element, rated -55℃ to 170℃, with a recommended pad of L 4.1 mm, a 2.1 mm and c 4 mm. |

## 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 tolerance (code F, ±1%) |  | -1 |  | 1 | % | Tolerance code F (±1%) per part-numbering table | 1 |
| Temperature coefficient (TCR) |  | -50 |  | 50 | ppm/℃ | Resistance 2~500 mΩ range (70 mΩ falls here); ±350 ppm/℃ applies only to 0.5~1.5 mΩ | 3 |
| Insulation resistance |  | 100 |  |  | MΩ |  | 1 |
| Operating temperature range |  | -55 |  | 170 | ℃ |  | 3 |
| Temperature cycling resistance change | ΔR | -0.5 |  | 0.5 | % | 1000 cycles (-55℃ to +150℃), JESD22 Method JA-104; endurance reference limit | 3 |
| ESD resistance change | ΔR | -1 |  | 1 | % | AEC-Q200 REV D; DC ±6kV, AD ±12/16/25kV; endurance reference limit | 3 |
| High temperature exposure resistance change | ΔR | -1 |  | 1 | % | 1000 hrs @ T=170℃, unpowered, MIL-STD-202 Method 108; endurance reference limit | 3 |
| Moisture resistance resistance change | ΔR | -1 |  | 1 | % | t=24 hrs/cycle, unpowered, MIL-STD-202 Method 106; endurance reference limit | 3 |
| Biased humidity resistance change | ΔR | -1 |  | 1 | % | 1000 hrs 85℃/85%RH, 10% of operating power, MIL-STD-202 Method 103; endurance reference limit | 3 |
| Operational life resistance change | ΔR | -1 |  | 1 | % | Condition D steady state TA=70℃ at rated power, MIL-STD-202 Method 108; endurance reference limit | 3 |
| Resistance to soldering heat resistance change | ΔR | -0.5 |  | 0.5 | % | 260℃±5℃, 10s±1s, MIL-STD-202 Method 210; endurance reference limit | 3 |
| Short time overload resistance change | ΔR | -1 |  | 1 | % | 5×Rated power for 5 s, MIL-STD-202 Method 201; endurance reference limit | 3 |
| Shock resistance change | ΔR | -1 |  | 1 | % | 100g, 6ms, MIL-STD-202 Method 213; endurance reference limit | 3 |
| Vibration resistance change | ΔR | -1 |  | 1 | % | 5 g's for 20 min, 10-2000 Hz, MIL-STD-202 Method 204; endurance reference limit | 3 |
| Rated power |  |  | 3 |  | W | Rated power at P70℃; power code 3 = 3W | 1 |
| Resistance range (YLRY12, ±50 ppm/℃ band) |  | 2 |  | 500 | mΩ | Spec table range for ±50 ppm/℃ TCR; dimension table prints 0.5~500 for YLRY12 | 3 |

## CAD (KiCad official)

- Symbol: `YLRY12-3-70F`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `ylry12-3-70f-etched.step` / `ylry12-3-70f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ylry12-3-70f.step` / `ylry12-3-70f.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/8603386689524019200) (7 pp, sha256 `25c896c0861e1c44`, retrieved 2026-11-07, 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/ylry12-3-70f-datasheet.pdf)