component

LRBK25EFER180

Public Made by Adom

by adom

NCT Current Sense Resistors/Shunt Resistors, 2512. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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LRBK25EFER180

NCT · Current Sense Resistors/Shunt Resistors · 2512

LRBK25EFER180 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
Temperature coefficient of resistance (TCR), R≥101mΩ TCR -100 100 ppm/°C LRBK25, R≥101mΩ; printed as ±100 6
Resistance range R 101 500 mΩ LRBK25, printed as 101mΩ~500mΩ 6
Rated power P 2 W LRBK25 2W; derate above 70°C per curve 6
Rated current I 4.45 A LRBK25 row, at R=101mΩ; I=SQRT(P/R) 6
Maximum overload current 3.16 A LRBK25 row as printed in the 最高过负荷电流 column 6
Operating temperature range -55 170 °C 使用温度范围 as printed 6
Insulation resistance 100 MΩ 100 VDC applied for 1 minute, electrode to protective coat and electrode to substrate 12
Solder electrode new tin area 95 % Solderability: dipped at 245±5°C for 3±1 s; new solder coverage must exceed 11
Resistance change, short time overload ΔR/R -0.5 0.5 % 5 s at X5 rated power (2W), 24 h rest; printed ≦±0.5% 10
Resistance change, temperature cycling ΔR/R -0.5 0.5 % -55°C to +125°C, 1000 cycles; printed ≦±0.5% 11
Resistance change, biased humidity ΔR/R -0.5 0.5 % 85°C, 85%RH, rated current 90 min ON/30 min OFF, 1000 h; printed ≦±0.5% 11
Resistance change, low temperature exposure ΔR/R -0.5 0.5 % -55±2°C, 1000 h; printed ≦±0.5% 11
Resistance change, high temperature exposure ΔR/R -1 1 % 170°C, 1000 h; printed ≦±1.0% 11
Resistance change, load life ΔR/R -1 1 % 70±2°C, rated current 90 min ON/30 min OFF, 1000 h; printed ≦±1.0% 11
Resistance change, resistance to solder heat ΔR/R -0.5 0.5 % 260±5°C solder bath, 10±1 s; printed ≦±0.5% 11
Resistance change, resistance to solvent ΔR/R -0.5 0.5 % Isopropyl alcohol 20-25°C, 60±5 s, 24 h rest; printed ≦±0.5% 12
Resistance change, joint strength of solder ΔR/R -0.5 0.5 % Bend test under load; printed ≦±0.5% 12
Storage temperature 5 35 °C Storage in sealed condition, relative humidity 40-75; shelf life 2 years 14

CAD (KiCad official)

  • Symbol: LRBK25EFER180
  • Footprint: Resistor_SMD:R_2512_6332Metric
  • 3D model: 2512 (KiCad packages3D, STEP)
  • 3D model files: lrbk25efer180-etched.step / lrbk25efer180-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lrbk25efer180.step / lrbk25efer180.glb are the bare package body.

Provenance

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

  • Datasheet: NCT datasheet (15 pp, sha256 1c7bbc6a4c0f07fe, retrieved 2026-10-18, 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