component
FRM121WFR020TM
Public Made by Adomby adom
FOJAN Current Sense Resistors / Shunt Resistors, 1206. 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
markdownFRM121WFR020TM
FOJAN · Current Sense Resistors / Shunt Resistors · 1206
FRM121WFR020TM from FOJAN, in a 1206. 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 | First terminal of the 1206 alloy current-sense resistor (20 mΩ per the part number), rated 1 W at 70°C with 31 A rated current and 70 A max overload for 1-100 mΩ values. |
| 2 | 2 | passive | Second terminal of the 1206 alloy current-sense resistor, interchangeable with the other terminal; the recommended pad is a=1.8 mm, b=1.7 mm, L=1.6 mm, with Kelvin four-terminal sensing taken from the PCB sensing traces. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FOJAN |
| Package | 1206 |
| 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 | 20 | mΩ | nominal, catalog attribute (LCSC C7420010) | catalog | |||
| Tolerance | -1 | 1 | % | catalog attribute (LCSC C7420010) | catalog | ||
| Rated power | 1 | W | catalog attribute (LCSC C7420010) | catalog | |||
| Temperature coefficient | TCR | -50 | 50 | ppm/°C | catalog description (LCSC C7420010) | catalog |
CAD (KiCad official)
- Symbol:
FRM121WFR020TM - Footprint:
Resistor_SMD:R_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
frm121wfr020tm-etched.step/frm121wfr020tm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);frm121wfr020tm.step/frm121wfr020tm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOJAN datasheet (12 pp, sha256
13a1c74e6b23cc10, retrieved 2026-10-19, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).