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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 LRA12* 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 LRA12* 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 LRA12* 1 W, 2~100 mΩ; unit not printed in table 3
Maximum overload current 50 Row LRA12* 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 (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