# JER2512F3R004L

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

JER2512F3R004L from jieerrui, 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 | Large-electrode terminal (L suffix, E = 2.20±0.20 mm) of the 4 mΩ ±1% 3 W current-sense resistor, 2512 body 6.40×3.20 mm, operating range -55°C to +170°C. |
| 2 | 2 | passive | Second large-electrode terminal (E = 2.20±0.20 mm) of the 4 mΩ ±1% 3 W current-sense resistor, interchangeable with the other terminal; power derates above 70°C ambient. |

## Key specifications

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

## Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance |  |  | 4 |  | mΩ | nominal, catalog attribute (LCSC C46634459) | catalog |
| Tolerance |  | -1 |  | 1 | % | catalog attribute (LCSC C46634459) | catalog |
| Rated power |  |  |  | 3 | W | catalog attribute (LCSC C46634459) | catalog |

## CAD (KiCad official)

- Symbol: `JER2512F3R004L`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `jer2512f3r004l-etched.step` / `jer2512f3r004l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jer2512f3r004l.step` / `jer2512f3r004l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [jieerrui datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604449590574145536) (7 pp, sha256 `f0578e1f31540152`, 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/jer2512f3r004l-datasheet.pdf)