# LRAM12CFTR020

**NCT** · Current Sense Resistors/Shunt Resistors · 1206

LRAM12CFTR020 from NCT, in a 1206. 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 | First terminal of the 20 mΩ (R020) 1206 alloy current-sense resistor, rated 1 W with ±50 ppm/°C TCR over -55 to +170 °C; the part is non-polarized and the sense point is the 4-wire measurement on the back electrode. |
| 2 | 2 | passive | Second terminal of the 20 mΩ (R020) 1206 alloy current-sense resistor, rated 1 W with maximum rated current 22.36 A and maximum overload current 50.00 A for the 2~100 mΩ range. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NCT |
| Package | 1206 |
| 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 | % | Tolerance letter F = ±1% | 2 |
| Temperature coefficient of resistance (TCR) | TCR | -50 |  | 50 | ppm/°C | Row LRA*12** 1 W, 2~100 mΩ; R1 at room temp, R2 at 125 °C | 3 |
| Operating temperature range |  | -55 |  | 170 | °C | 使用温度范围 as printed for LRA*12** | 3 |
| Rated power | P |  |  | 1 | W | 1 W (code C); must be derated above 70 °C per printed derating curve | 3 |
| Maximum rated current |  |  |  | 22.36 |  | Row LRA*12** 1 W, 2~100 mΩ; unit not printed in table | 3 |
| Maximum overload current |  |  |  | 50 |  | Row LRA*12** 1 W, 2~100 mΩ; unit not printed in table | 3 |
| Short time overload resistance change | ΔR/R | -0.5 |  | 0.5 | % | 1206 1 W: 5 times rated power for 5 s, 24 h rest | 5 |
| Biased humidity resistance change | ΔR/R | -0.5 |  | 0.5 | % | 85 °C/85%RH, 10% rated power, 1000 h, 24±4 h rest | 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±2 °C, 96 h | 5 |
| High temperature exposure resistance change | ΔR/R | -1 |  | 1 | % | 170 °C, 1000 h, 24±4 h rest | 5 |
| Load life resistance change | ΔR/R | -1 |  | 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 |  | 0.5 | % | 260±5 °C solder bath, 10±1 s, 1 h rest | 5 |
| Solderability (electrode coverage with new solder) |  | 95 |  |  | % | 245±5 °C, 3±1 s; coverage must be greater than 95% | 5 |
| Terminal bending resistance change | ΔR/R | -0.5 |  | 0.5 | % | 2.5 kg load, 2 mm deflection, 60 s | 5 |

## CAD (KiCad official)

- Symbol: `LRAM12CFTR020`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `lram12cftr020-etched.step` / `lram12cftr020-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lram12cftr020.step` / `lram12cftr020.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/8608758259436171264) (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/lram12cftr020-datasheet.pdf)