component

LR123WF620MT4E

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.

componentresistorslr123wf620mt4efactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers lr123wf620mt4e: viewers · Ray
lr123wf620mt4e-etched.glb Publish 0.1.0 · Ray
lr123wf620mt4e-etched.step lr123wf620mt4e: factory component page (tier=lcsc) · Ray
lr123wf620mt4e-hero.glb lr123wf620mt4e: hero GLB from the etched model (keeps the MPN mark) · Ray
lr123wf620mt4e-hero.overlay.json Publish 0.1.0 · Ray
lr123wf620mt4e.glb Publish 0.1.0 · Ray
lr123wf620mt4e.kicad_mod Publish 0.1.0 · Ray
lr123wf620mt4e.kicad_sym lr123wf620mt4e: KiCad Device:R symbol instead of a box (two-terminal passive) · Ray
lr123wf620mt4e.lbr lr123wf620mt4e: KiCad Device:R symbol instead of a box (two-terminal passive) · Ray
lr123wf620mt4e.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray

LR123WF620MT4E

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

LR123WF620MT4E 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 -1 1 % Part-number tolerance code F = ±1% 2
Temperature coefficient -50 50 PPM/℃ t1 +25°C, t2 125°C 4
Short-time overload ΔR ΔR -0.5 0.5 % 4 times rated power for 5 seconds (LR12-3W) 4
Load life ΔR ΔR -1 1 % 1000 hours 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 % 155±2°C for 1000 H (MIL-STD-202 108A) 4
Biased humidity ΔR ΔR -0.5 0.5 % 85°C/85%RH, 1000 hours, 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 seconds 4
Storage temperature (recommended) 15 35 ℃ Recommended warehouse storage 6
Storage humidity (recommended) 25 75 %RH Recommended warehouse storage 6
Reflow peak temperature (Tp) Tp 260 ℃ Recommended Pb-free reflow profile (Sn96.5/Ag3/Cu0.5) 5
Allowed re-flow times 2 times Pb-free reflow profile 5
Rated power P 3 W LR12 3W, continuous load 2
Rated ambient temperature for full power 70 ℃ Continuous load; power derated above 70℃ per Figure 1 4

CAD (KiCad official)

  • Symbol: LR123WF620MT4E
  • Footprint: Resistor_SMD:R_2512_6332Metric
  • 3D model: 2512 (KiCad packages3D, STEP)
  • 3D model files: lr123wf620mt4e-etched.step / lr123wf620mt4e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr123wf620mt4e.step / lr123wf620mt4e.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