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LR123WF500MT4E
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UNI ROYAL Uniroyal Elec Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LR123WF500MT4E
UNI ROYAL Uniroyal Elec · Current Sense Resistors / Shunt Resistors · 2512
LR123WF500MT4E 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 | Terminal 1 | passive | First end termination of the 2512 chip resistor (Ni/Cr inner, Ni barrier, Sn outer), terminal length B 0.50±0.20 mm; the part is non-polarized, with 200V max working voltage and 500V max overload voltage. |
| 2 | Terminal 2 | passive | Second end termination of the 2512 chip resistor (Ni/Cr inner, Ni barrier, Sn outer), interchangeable with terminal 1, operating temperature -55~+155°C. |
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 | 50 | mΩ | nominal, catalog attribute (LCSC C2941094) | catalog | |||
| Tolerance | -1 | 1 | % | catalog attribute (LCSC C2941094) | catalog | ||
| Rated power | 3 | W | catalog attribute (LCSC C2941094) | catalog |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | pc | ML05, ML06 Embossed 塑胶带 5,000pc 8mm 10 | 69 | |
| contacts | Copper | Copper Plated Steel Lead Wire Type & Cutting Type 铜包钢导线型及半成品型 CP, CO, CMO, WMO, WWR 98 | 8 | |
| shell | tin | 陶瓷外壳及不同尺寸铁帽、镀锡铁帽等。 Anti-Sulfurized Thick Film Chip Resistors, NS | 6 |
CAD (KiCad official)
- Symbol:
LR123WF500MT4E - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
lr123wf500mt4e-etched.step/lr123wf500mt4e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lr123wf500mt4e.step/lr123wf500mt4e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI ROYAL Uniroyal Elec datasheet (200 pp, sha256
ef35c54db5ef3b90, retrieved 2026-10-22, 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).
# LR123WF500MT4E
**UNI ROYAL Uniroyal Elec** · Current Sense Resistors / Shunt Resistors · 2512
LR123WF500MT4E 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 | Terminal 1 | passive | First end termination of the 2512 chip resistor (Ni/Cr inner, Ni barrier, Sn outer), terminal length B 0.50±0.20 mm; the part is non-polarized, with 200V max working voltage and 500V max overload voltage. |
| 2 | Terminal 2 | passive | Second end termination of the 2512 chip resistor (Ni/Cr inner, Ni barrier, Sn outer), interchangeable with terminal 1, operating temperature -55~+155°C. |
## 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 | | | 50 | | mΩ | nominal, catalog attribute (LCSC C2941094) | catalog |
| Tolerance | | -1 | | 1 | % | catalog attribute (LCSC C2941094) | catalog |
| Rated power | | | | 3 | W | catalog attribute (LCSC C2941094) | catalog |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | pc | | ML05, ML06 Embossed 塑胶带 5,000pc 8mm 10 | 69 |
| contacts | Copper | | Copper Plated Steel Lead Wire Type & Cutting Type 铜包钢导线型及半成品型 CP, CO, CMO, WMO, WWR 98 | 8 |
| shell | | tin | 陶瓷外壳及不同尺寸铁帽、镀锡铁帽等。 Anti-Sulfurized Thick Film Chip Resistors, NS | 6 |
## CAD (KiCad official)
- Symbol: `LR123WF500MT4E`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `lr123wf500mt4e-etched.step` / `lr123wf500mt4e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lr123wf500mt4e.step` / `lr123wf500mt4e.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UNI ROYAL Uniroyal Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756846168641159168) (200 pp, sha256 `ef35c54db5ef3b90`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/lr123wf500mt4e-datasheet.pdf)