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FRM252WFR050TN

Public Made by Adom

by adom

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

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FRM252WFR050TN

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); frm252wfr050tn.step / frm252wfr050tn.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