component
LR122WF220LT4E
Public Made by Adomby adom
UNI ROYAL Uniroyal Elec Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLR122WF220LT4E
UNI ROYAL Uniroyal Elec · Current Sense Resistors / Shunt Resistors · 2512
LR122WF220LT4E 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 | One of the two end terminals of the LR12 2W metal strip chip resistor (6.35±0.254 x 3.18±0.254 mm body); the part is non-polarized and rated 2W at 70°C. |
| 2 | 2 | passive | The other end terminal of the LR12 2W metal strip chip resistor; the part is non-polarized and either terminal may be connected to either side of the circuit. |
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 | 220 | mΩ | nominal, catalog attribute (LCSC C2941078) | catalog | |||
| Tolerance | -1 | 1 | % | catalog attribute (LCSC C2941078) | catalog | ||
| Rated power | 2 | W | catalog attribute (LCSC C2941078) | catalog | |||
| Temperature coefficient | TCR | -50 | 50 | ppm/°C | catalog description (LCSC C2941078) | catalog |
CAD (KiCad official)
- Symbol:
LR122WF220LT4E - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
lr122wf220lt4e-etched.step/lr122wf220lt4e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lr122wf220lt4e.step/lr122wf220lt4e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI ROYAL Uniroyal Elec datasheet (8 pp, sha256
9cafe18fe2eb29b6, retrieved 2026-10-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).