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frm252wjr001tn

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FOJAN Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FRM252WJR001TN

FOJAN · Current Sense Resistors / Shunt Resistors · 2512

FRM252WJR001TN 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 alloy-resistor electrode (Sn/Ni/Cu plated terminal) of the 2512 chip, 6.4x3.2 mm body, rated 2 W at 70°C and 63 A rated current, with recommended pad a=4.0 mm, b=2.1 mm; the Kelvin voltage-sense point is on the underside of this terminal.
2 2 passive Second alloy-resistor electrode (Sn/Ni/Cu plated terminal) of the 2512 chip, non-polarized and interchangeable with the first, with 141 A max overload current and -55°C to 170°C operating range; the Kelvin voltage-sense point is on the underside of this terminal.

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 (part number code J = ±5%) -5 5 % 2
Resistance (nominal, marking R001 = 1 mΩ) R 1 mΩ 6
Resistance range (2512 standard) 1 680 mΩ 5
T.C.R. TCR -50 50 PPM/℃ 5
Power Rating 2 W at P70 5
Rated Current 63 A 5
Max overload Current 141 A 5
Operating Temperature -55 170 °C 5
ΔR High Temperature Exposure (Storage) ΔR -1 1 % T=170℃, 1000 hrs, measured 24 hrs after test 6
ΔR Low Temperature Exposure (Storage) ΔR -0.5 0.5 % T=-55ºC, 1000 hours, measured 24 hrs after test 6
ΔR Temperature Cycling ΔR -0.5 0.5 % 1000 cycles (-55℃ to 125℃), measured 24 hrs after test 6
ΔR Short time overload ΔR -0.5 0.5 % 5 X rated power for 5 s 6
ΔR Moisture Resistance ΔR -1 1 % 24 hours/cycle, 10 cycles, zero power 6
ΔR Biased Humidity ΔR -0.5 0.5 % 10% rated power at 85℃, RH 85%, 1000 hrs, measured 24 hrs after test 6
ΔR Load Life ΔR -1 1 % 1000 h at +70 °C, 1.5 h ON, 0.5 h OFF, measured 24 hrs after test 7
ΔR Resistance to Soldering Heat ΔR -0.5 0.5 % T=260±5℃ solder, 10±1 sec dwell 7
ΔR Mechanical Shock ΔR -0.5 0.5 % 100 g's, 6 ms half sine shock pulse 7
ΔR Resistance to Vibration ΔR -0.5 0.5 % 5 g's for 20 min, 12 cycles, 10-2000 Hz 7
ΔR Board Flex ΔR -0.5 0.5 % Min 2 mm deflection, 60 sec 7
ΔR Thermal Shock ΔR -1 1 % -55°C/+155°C, 1000 cycles 7
ΔR ESD Test ΔR -1 1 % Direct contact ±6kV; air discharge +12kV, +16kV, +25kV 7

CAD (KiCad official)

  • Symbol: FRM252WJR001TN
  • Footprint: Resistor_SMD:R_2512_6332Metric
  • 3D model: 2512 (KiCad packages3D, STEP)
  • 3D model files: frm252wjr001tn-etched.step / frm252wjr001tn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); frm252wjr001tn.step / frm252wjr001tn.glb are 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, 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