# FMF25JPJR004-LH

**PSA Prosperity Dielectrics** · Current Sense Resistors / Shunt Resistors · 2512

FMF25JPJR004-LH from PSA Prosperity Dielectrics, 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 | One metal-strip termination of the 2512 (FMF25) current sense resistor, 4 mΩ ±5%, 2 W at 70 °C, with a stated maximum working voltage of 447 mV and maximum overload voltage of 1000 mV. |
| 2 | 2 | passive | Other metal-strip termination of the 2512 (FMF25) current sense resistor; the part is non-polarized, so the two terminals are interchangeable, and the datasheet gives termination width a = 0.80±0.20 mm. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PSA Prosperity Dielectrics |
| 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 C1021511) | catalog |
| Tolerance |  | -5 |  | 5 | % | catalog attribute (LCSC C1021511) | catalog |
| Rated power |  |  |  | 2 | W | catalog attribute (LCSC C1021511) | catalog |
| Temperature coefficient | TCR | -100 |  | 100 | ppm/°C | catalog description (LCSC C1021511) | catalog |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper |  | Item Protective Molding Resistive Element Internal Terminal External Terminal Material Resin Alloy Metal Copper Solder | 3 |

## CAD (KiCad official)

- Symbol: `FMF25JPJR004-LH`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `fmf25jpjr004-lh-etched.step` / `fmf25jpjr004-lh-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fmf25jpjr004-lh.step` / `fmf25jpjr004-lh.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PSA Prosperity Dielectrics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588958701239062528) (10 pp, sha256 `1d15e82c90ee2489`, retrieved 2026-11-07, tier: lcsc)
- **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/fmf25jpjr004-lh-datasheet.pdf)