# RLM25JECR025

**TA I Tech** · Current Sense Resistors / Shunt Resistors · 2512

RLM25JECR025 from TA I Tech, 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 terminal of the 25 mΩ (R025) metal-alloy current-sense element, Ni/Sn plated, 1W rated (C) at 70°C ambient, derated to 0 at 170°C. |
| 2 | 2 | passive | Other terminal of the 25 mΩ (R025) metal-alloy current-sense element, Ni/Sn plated; rated current is I=√(P÷R) and the recommended pad layout for 4-50 mΩ is a=4.0, b=2.1, L=4.1 mm with sensing traces taken from the pads. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TA I Tech |
| 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 |  |  | 25 |  | mΩ | nominal, catalog attribute (LCSC C2930479) | catalog |
| Tolerance |  | -5 |  | 5 | % | catalog attribute (LCSC C2930479) | catalog |
| Rated power |  |  |  | 1 | W | catalog attribute (LCSC C2930479) | catalog |
| Temperature coefficient | TCR | -50 |  | 50 | ppm/°C | catalog description (LCSC C2930479) | catalog |

## CAD (KiCad official)

- Symbol: `RLM25JECR025`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `rlm25jecr025-etched.step` / `rlm25jecr025-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rlm25jecr025.step` / `rlm25jecr025.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TA I Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590215050918604800) (6 pp, sha256 `989c7e3a3ab7849d`, 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/rlm25jecr025-datasheet.pdf)