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LR122WF160LT4E

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UNI ROYAL Uniroyal Elec 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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LR122WF160LT4E

UNI ROYAL Uniroyal Elec · Current Sense Resistors / Shunt Resistors · 2512

LR122WF160LT4E from UNI ROYAL Uniroyal Elec, 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 UNI ROYAL Uniroyal Elec
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 (7th code F = ±1%) -1 1 % Part number 7th code F = ±1% (section 2.3) 2
Temperature coefficient of resistance -50 50 ppm/°C t1 = +25°C or specified room temperature; t2 = test temperature 125°C 4
Rated power (2W series) P 2 W Continuous load at ambient 70°C; derate above 70°C per Figure 1 4
Short-time overload, ΔR ΔR -0.5 0.5 % LR12-2W: 5 times rated power for 5 seconds 4
Load life, ΔR ΔR -1 1 % 1000 h at rated or max working current (whichever less), duty 1.5 h ON / 0.5 h OFF, 70±2°C ambient 4
High temperature exposure, ΔR ΔR -1 1 % MIL-STD-202 108A: 155±2°C for 1000 h 4
Biased humidity, ΔR ΔR -0.5 0.5 % MIL-STD-202 Method 103: 1000 h at 85°C/85%RH, 10% of operating power; measured at 24±4 h after test 4
Rapid change of temperature, ΔR ΔR -0.5 0.5 % 30 min at -55°C and 30 min at 155°C; 100 cycles 4
Terminal bending, ΔR ΔR -0.5 0.5 % 2 mm, 10 s 4
Resistance to solder heat, ΔR ΔR -0.5 0.5 % Dip at 260±5°C, hold 10±1 s 4
Solderability, wetted coverage 95 % Solder temperature 245±3°C; dwell 2-3 s 4
Dielectric withstanding test, surge current limit 50 mA Applied 500 VAC for 1 minute; limit surge current 50 mA (max.) 4
Storage temperature (recommended warehouse) 15 35 °C Recommended storage in warehouse (storage, not operating) 6
Storage relative humidity (recommended warehouse) 25 75 %RH Recommended storage in warehouse (storage, not operating) 6
Allowed reflow soldering cycles 2 times Lead-free reflow profile (Sn96.5/Ag3/Cu0.5); N2 reflow recommended 5

CAD (KiCad official)

  • Symbol: LR122WF160LT4E
  • Footprint: Resistor_SMD:R_2512_6332Metric
  • 3D model: 2512 (KiCad packages3D, STEP)
  • 3D model files: lr122wf160lt4e-etched.step / lr122wf160lt4e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr122wf160lt4e.step / lr122wf160lt4e.glb are the bare package body.

Provenance

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

  • Datasheet: UNI ROYAL Uniroyal Elec datasheet (6 pp, sha256 697e24f2047069dc, retrieved 2026-10-17, tier: lcsc)
  • 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