# LRBM25GFER060

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

LRBM25GFER060 from NCT, 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 end electrode of the 2512 (6.4x3.2 mm) LRB*25** current-sense resistor; non-polarized, 3W rated at 70°C with derating above, 4-wire measurement on the back electrodes. |
| 2 | 2 | passive | Other end electrode of the 2512 LRB*25** current-sense resistor; non-polarized and interchangeable with the first terminal, with the 4-wire measurement points 5.60 mm apart. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NCT |
| 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 | % |  | 2 |
| Temperature coefficient of resistance (3 W, 2~100 mΩ range) | TCR | -50 |  | 50 | ppm/°C | LRB*25** 3 W variant; measured R1 at room temp to R2 at 125 °C (JIS C 5201 4.8) | 3 |
| Rated power |  |  |  | 3 | W | LRB*25** 3 W variant; derate above 70 °C | 3 |
| Resistance range | R | 2 |  | 100 | mΩ | LRB*25** 3 W variant | 3 |
| Maximum rated current |  |  |  | 38.73 | A | LRB*25** 3 W variant, 2~100 mΩ range | 3 |
| Maximum overload current |  |  |  | 86.6 | A | LRB*25** 3 W variant, 2~100 mΩ range | 3 |
| Operating temperature range |  | -55 |  | 170 | °C | LRB*25** 3 W variant | 3 |
| Storage temperature (sealed packaging, 2-year shelf life) |  | 5 |  | 35 | °C | Sealed packaging; storage away from corrosive gases and direct sunlight | 6 |
| Short time overload resistance change | ΔR/R |  |  | 0.5 | % | 5 s overload at 5 times rated power (2512, 3 W); rest 24 h | 5 |
| Biased humidity resistance change | ΔR/R |  |  | 0.5 | % | 85 °C / 85 %RH, 10% of rated power, 1000 h | 5 |
| Temperature cycling resistance change | ΔR/R |  |  | 0.5 | % | -55 °C to +150 °C, 1000 cycles, 15 min dwell | 5 |
| Low temperature exposure resistance change | ΔR/R |  |  | 0.5 | % | -55 ±2 °C, 96 h | 5 |
| High temperature exposure resistance change | ΔR/R |  |  | 1 | % | 170 °C, 1000 h | 5 |
| Load life resistance change | ΔR/R |  |  | 1 | % | 70 ±2 °C, rated power 90 min ON / 30 min OFF, 1000 h | 5 |
| Resistance to solder heat resistance change | ΔR/R |  |  | 0.5 | % | 260 ±5 °C solder bath, 10 ±1 s | 5 |
| Solderability (electrode area covered with new solder) |  | 95 |  |  | % | 245 ±5 °C, 3 ±1 s | 5 |
| Terminal bending resistance change | ΔR/R |  |  | 0.5 | % | 2.5 kg load, 2 mm deflection, 60 s | 5 |

## CAD (KiCad official)

- Symbol: `LRBM25GFER060`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `lrbm25gfer060-etched.step` / `lrbm25gfer060-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lrbm25gfer060.step` / `lrbm25gfer060.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [NCT datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8608758425895919616) (6 pp, sha256 `13512fac2aa9df8a`, 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/lrbm25gfer060-datasheet.pdf)