# LRAM25EFER010

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

LRAM25EFER010 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 | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## 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 | % | Part-number tolerance code F | 3 |
| Temperature coefficient of resistance (TCR) | TCR | -50 |  | 50 | ppm/°C | LRA*25**, 2 W, 2~10 mΩ range | 3 |
| Maximum rated power |  |  |  | 2 | W | LRA*25**, 2 W row; derate above 70 °C per power curve | 3 |
| Operating temperature range |  | -55 |  | 170 | °C | LRA*25**, 2 W row | 3 |
| Maximum rated current |  |  |  | 30.62 |  | LRA*25**, 2 W, 2~10 mΩ row; unit not printed | 3 |
| Maximum overload current |  |  |  | 70.71 |  | LRA*25**, 2 W, 2~10 mΩ row; unit not printed | 3 |
| Short time overload: resistance change | ΔR/R | -0.5 |  | 0.5 | % | 2512, 2 W, 5 × rated power for 5 s, then 24 h rest | 5 |
| Biased humidity: resistance change | ΔR/R | -0.5 |  | 0.5 | % | 85 °C/85 %RH, 10 % rated power, 1000 h | 5 |
| Temperature cycling: resistance change | ΔR/R | -0.5 |  | 0.5 | % | -55 °C to +150 °C, 1000 cycles, 15 min dwell | 5 |
| Low temperature exposure: resistance change | ΔR/R | -0.5 |  | 0.5 | % | -55 °C, 96 h | 5 |
| High temperature exposure: resistance change | ΔR/R | -1 |  | 1 | % | 170 °C, 1000 h | 5 |
| Load life: resistance change | ΔR/R | -1 |  | 1 | % | 70 °C, rated power, 90 min ON / 30 min OFF, 1000 h | 5 |
| Resistance to solder heat: resistance change | ΔR/R | -0.5 |  | 0.5 | % | 260 °C solder bath, 10 s | 5 |
| Terminal bending: resistance change | ΔR/R | -0.5 |  | 0.5 | % | 2 mm deflection, 2.5 kg, 60 s under load | 5 |
| Solderability: electrode area covered by new solder |  | 95 |  |  | % | 245 ±5 °C, 3 ±1 s, J-STD-002 | 5 |
| Nominal resistance | R |  | 10 |  | mΩ | Part number suffix R010; LRA*25**, 2 W | 2 |

## CAD (KiCad official)

- Symbol: `LRAM25EFER010`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `lram25efer010-etched.step` / `lram25efer010-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lram25efer010.step` / `lram25efer010.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/8608758386071003136) (6 pp, sha256 `13512fac2aa9df8a`, retrieved 2026-10-17, 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`, primary `two-terminal convention` (convention), consensus `off` (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/lram25efer010-datasheet.pdf)