component
FRM252WFR100TN
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
markdownFRM252WFR100TN
FOJAN · Current Sense Resistors / Shunt Resistors · 2512
FRM252WFR100TN 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 terminal of the 2512 (6.4 x 3.2 mm) alloy current-sense resistor; the part is non-polarized and the terminals are interchangeable, with recommended pad a=4.0±0.1 mm, b=2.1±0.1 mm for 1 mΩ ≤ R ≤ 680 mΩ. |
| 2 | 2 | passive | Second terminal of the 2512 alloy current-sense resistor; rated 2 W at 70 °C, 63 A rated current, resistance measured by Kelvin four-terminal sensing at the product bottom. |
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 | 1 | % | 2 | |||
| Temperature coefficient of resistance (2512 standard, 1-680 mΩ) | TCR | -50 | 50 | ppm/°C | Measuring points 25°C and +125°C, reference point +25°C | 5 | |
| Rated power (2512, 2W) | P70 | 2 | W | at P70 | 5 | ||
| Rated current (2512) | 63 | A | 5 | ||||
| Max overload current (2512) | 141 | A | 5 | ||||
| Operating temperature range | -55 | 170 | °C | 5 | |||
| Dielectric withstanding voltage | 500 | V DC | 2 | ||||
| Nominal resistance (code R100) | R | 100 | mΩ | 2 | |||
| High temperature exposure (storage) ΔR | ΔR | -1 | 1 | % | T=170℃, 1000 hrs, measurement at 24 hrs after test conclusion | 6 | |
| Low temperature exposure (storage) ΔR | ΔR | -0.5 | 0.5 | % | T=-55ºC, 1000 hours, measurement at 24 hrs after test conclusion | 6 | |
| Temperature cycling ΔR | ΔR | -0.5 | 0.5 | % | 1000 cycles (-55℃ to 125℃), measurement at 24 hrs after test conclusion | 6 | |
| Short time overload ΔR | ΔR | -0.5 | 0.5 | % | 5 X rated power for 5 s | 6 | |
| Moisture resistance ΔR | ΔR | -1 | 1 | % | T=24 hours / cycle, 10 cycles; steps 7a & 7b not required | 6 | |
| Biased humidity ΔR | ΔR | -0.5 | 0.5 | % | 10% rated power at 85℃, RH 85%, 1000 hrs, measurement at 24 hrs after test conclusion | 6 | |
| Load life ΔR | ΔR | -1 | 1 | % | 1000 h at +70 °C, 1.5 h ON, 0.5 h OFF, measurement at 24 hrs after test conclusion | 7 | |
| Resistance to soldering heat ΔR | ΔR | -0.5 | 0.5 | % | T=260±5℃ solder, 10±1 sec dwell | 7 | |
| Mechanical shock ΔR | ΔR | -0.5 | 0.5 | % | 100 g's, normal duration 6 ms, half sine shock pulse | 7 | |
| Vibration ΔR | ΔR | -0.5 | 0.5 | % | 5 g's for 20 min, 12 cycles, 10-2000 Hz | 7 | |
| Board flex ΔR | ΔR | -0.5 | 0.5 | % | Min 2 mm deflection, 60 s | 7 | |
| Thermal shock ΔR | ΔR | -1 | 1 | % | -55°C/+155°C, 1000 cycles, max transfer time 20 s, dwell 15 min | 7 | |
| ESD ΔR | ΔR | -1 | 1 | % | Direct contact (DC): ±6kV; air discharge (AD): +12kV, +16k, +25kV | 7 |
CAD (KiCad official)
- Symbol:
FRM252WFR100TN - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
frm252wfr100tn-etched.step/frm252wfr100tn-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);frm252wfr100tn.step/frm252wfr100tn.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).