component
FRM252WFR050TN
Public Made by Adomby adom
FOJAN 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
markdownFRM252WFR050TN
FOJAN · Current Sense Resistors / Shunt Resistors · 2512
FRM252WFR050TN from FOJAN, 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 | First end terminal (tin-plated electrode) of the 50 mΩ 2512 alloy resistor, rated 2 W at 70 °C and 63 A rated current; pad per datasheet is a=4.0±0.1, b=2.1±0.1, L=4.1±0.1 mm. |
| 2 | 2 | passive | Second end terminal (tin-plated electrode) of the resistor, interchangeable with the other terminal; the resistance is measured Kelvin four-terminal at the product bottom (A=5.6±0.25 mm, B=2.0±0.25 mm) and max overload current is 141 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FOJAN |
| 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 (code F) | -1 | 1 | % | Tolerance code F = ±1% | 2 | ||
| Temperature coefficient of resistance | TCR | -50 | 50 | ppm/°C | 5 | ||
| Resistance range (standard 2512 row) | R | 1 | 680 | mΩ | Standard 2512 row, not 2512-L | 5 | |
| Power rating | P | 2 | W | Power rating at P70 | 5 | ||
| Rated current | 63 | A | Single printed value in 2512 row; no test condition printed | 5 | |||
| Max overload current | 141 | A | Single printed value in 2512 row; no test condition printed | 5 | |||
| Operating temperature range | -55 | 170 | °C | 2512 row | 5 | ||
| Resistance change after high temperature exposure (storage) | ΔR | -1 | 1 | % | 170 °C, 1000 h; measured 24 h after test | 6 | |
| Resistance change after low temperature exposure (storage) | ΔR | -0.5 | 0.5 | % | -55 °C, 1000 h; measured 24 h after test | 6 | |
| Resistance change after temperature cycling | ΔR | -0.5 | 0.5 | % | 1000 cycles, -55 °C to 125 °C; measured 24 h after test | 6 | |
| Resistance change after short time overload | ΔR | -0.5 | 0.5 | % | 5 × rated power for 5 s | 6 | |
| Resistance change after moisture resistance | ΔR | -1 | 1 | % | 24 h per cycle, 10 cycles, no power | 6 | |
| Resistance change after biased humidity | ΔR | -0.5 | 0.5 | % | 10% rated power, 85 °C, RH 85%, 1000 h; measured 24 h after test | 6 | |
| Resistance change after load life | ΔR | -1 | 1 | % | 1000 h at +70 °C, 1.5 h ON / 0.5 h OFF; measured 24 h after test | 7 | |
| Resistance change after resistance to soldering heat | ΔR | -0.5 | 0.5 | % | 260±5 °C solder, 10±1 s dwell | 7 | |
| Resistance change after mechanical shock | ΔR | -0.5 | 0.5 | % | 100 g, 6 ms half sine | 7 | |
| Resistance change after vibration | ΔR | -0.5 | 0.5 | % | 5 g, 10-2000 Hz, 20 min per cycle, 12 cycles per axis | 7 | |
| Resistance change after board flex | ΔR | -0.5 | 0.5 | % | Min 2 mm deflection, 60 s | 7 | |
| Resistance change after thermal shock | ΔR | -1 | 1 | % | -55 °C/+155 °C, 1000 cycles | 7 | |
| Resistance change after ESD test | ΔR | -1 | 1 | % | Direct contact ±6 kV; air discharge up to +25 kV | 7 |
CAD (KiCad official)
- Symbol:
FRM252WFR050TN - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
frm252wfr050tn-etched.step/frm252wfr050tn-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);frm252wfr050tn.step/frm252wfr050tn.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).