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LRAN12CFTR033

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NCT Current Sense Resistors/Shunt Resistors, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LRAN12CFTR033

NCT · Current Sense Resistors/Shunt Resistors · 1206

LRAN12CFTR033 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 One end electrode of the alloy current-sense resistor (1% F tolerance, 33 mΩ per the R033 code), rated 1 W for 1 mΩ to 39 mΩ parts, with resistance measured 4-wire on the back electrodes.
2 2 passive Opposite end electrode of the alloy current-sense resistor, non-polarized and interchangeable with the other terminal, with TCR ±50 ppm/°C and an operating range of -55 to +170 °C.

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
Tolerance (code F = ±1%) -1 1 % 3
Temperature coefficient of resistance (TCR) TCR -50 50 ppm/°C 1W family, 1mΩ~39mΩ range 4
Rated power 1 1 W Code C = 1W (1mΩ~39mΩ); derate above 70°C 4
Maximum rated current 31.62 A 1W row, family table value 4
Maximum overload current 70.71 A 1W row, family table value 4
Operating temperature range -55 170 °C 4
Short time overload, resistance change -0.5 0.5 % 5 s applied at X5 rated power, rest 24 h 8
Biased humidity, resistance change -0.5 0.5 % 85°C/85%RH, rated current 90 min ON / 30 min OFF, 1,000 h 8
Temperature cycling, resistance change -0.5 0.5 % -55°C to +125°C, 1000 cycles 8
Low temperature exposure (storage), resistance change -0.5 0.5 % -55±2°C, 1000 h 8
High temperature exposure (storage), resistance change -1 1 % 170°C, 1000 h 9
Load life, resistance change -1 1 % 70±2°C, rated current 90 min ON / 30 min OFF, 1,000 h 9
Resistance to solder heat, resistance change -0.5 0.5 % 260±5°C solder bath, 10±1 s 9
Resistance to solvent, resistance change -0.5 0.5 % Isopropyl alcohol 20~25°C, 60±5 s 9
Joint strength of solder, resistance change -0.5 0.5 % Bend test board, under load 9
Solderability, electrode solder coverage 95 % 245±5°C solder bath, 3±1 s 9
Insulation resistance 100 MΩ 100 VDC applied 1 min, electrode to protective layer and electrode to substrate 9
Storage temperature 5 35 °C Sealed storage, shelf life 2 years, away from corrosive gases and direct sunlight 11
Storage relative humidity 40 75 %RH Sealed storage, shelf life 2 years 11

CAD (KiCad official)

  • Symbol: LRAN12CFTR033
  • Footprint: Resistor_SMD:R_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: lran12cftr033-etched.step / lran12cftr033-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lran12cftr033.step / lran12cftr033.glb are the bare package body.

Provenance

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

  • Datasheet: NCT datasheet (12 pp, sha256 9468aafd42725899, retrieved 2026-11-02, 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