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LR123WF390MT4E

Public Made by Adom

by adom

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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LR123WF390MT4E

UNI-ROYAL(Uniroyal Elec) · Current Sense Resistors / Shunt Resistors · 2512

LR123WF390MT4E 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 from the LCSC catalog entry for this part (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Resistance 39 mΩ nominal, catalog attribute (LCSC C5775685) catalog
Tolerance -1 1 % catalog attribute (LCSC C5775685) catalog
Rated power 3 W catalog attribute (LCSC C5775685) catalog

CAD (KiCad official)

  • Symbol: LR123WF390MT4E
  • Footprint: Resistor_SMD:R_2512_6332Metric
  • 3D model: 2512 (KiCad packages3D, STEP)
  • 3D model files: lr123wf390mt4e-etched.step / lr123wf390mt4e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr123wf390mt4e.step / lr123wf390mt4e.glb are the bare package body.

Provenance

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

  • Datasheet: UNI-ROYAL(Uniroyal Elec) datasheet (7 pp, sha256 e01cdf7929676065, 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