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FRM121WFR005TM

Public Made by Adom

by adom

FOJAN Current Sense Resistors / Shunt Resistors, 1206. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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FRM121WFR005TM

FOJAN · Current Sense Resistors / Shunt Resistors · 1206

FRM121WFR005TM 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 Terminal 1 of an unpolarised resistor; either orientation.
2 2 passive Terminal 2 of an unpolarised resistor; either orientation.

Key specifications

Parameter Value
Manufacturer FOJAN
Package 1206
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 range (1206, 1 W variant) R 1 100 mΩ 1206 1W row; 0.5W row (101~200 mΩ) is a sibling and skipped 5
Tolerance (part-number code F) -1 1 % 2
Temperature coefficient of resistance TCR -50 50 PPM/℃ Measured 25℃ and +125℃, reference +25℃ 5
Power rating P70 1 W at P70 5
Rated current 31 A 1206 1W row 5
Max overload current 70 A 1206 1W row 5
Operating temperature range -55 170 ℃ 5
Dielectric withstanding voltage 500 V DC Printed in features list 2
High temperature exposure ΔR ΔR -1 1 % T=170℃, 1000 h, measured 24 h after test 6
Low temperature exposure ΔR ΔR -0.5 0.5 % T=-55℃, 1000 h, measured 24 h after test 6
Temperature cycling ΔR ΔR -0.5 0.5 % 1000 cycles, -55℃ to 125℃ 6
Short time overload ΔR ΔR -0.5 0.5 % 5 x rated power for 5 s 6
Moisture resistance ΔR ΔR -1 1 % 24 h per cycle, 10 cycles, no power 6
Biased humidity ΔR ΔR -0.5 0.5 % 10% rated power, 85℃, RH 85%, 1000 h 6
Load life ΔR ΔR -1 1 % 1000 h at +70℃, 1.5 h ON / 0.5 h OFF 7
Resistance to soldering heat ΔR ΔR -0.5 0.5 % 260±5℃ solder, 10±1 s 7
Mechanical shock ΔR ΔR -0.5 0.5 % 100 g, 6 ms half sine 7
Vibration ΔR ΔR -0.5 0.5 % 5 g, 10-2000 Hz, 20 min, 12 cycles per axis 7
Board flex ΔR ΔR -0.5 0.5 % Min 2 mm deflection, 60 s 7
Thermal shock ΔR ΔR -1 1 % -55℃/+155℃, 1000 cycles 7
ESD ΔR ΔR -1 1 % Direct contact ±6 kV; air discharge up to 25 kV 7

CAD (KiCad official)

  • Symbol: FRM121WFR005TM
  • Footprint: Resistor_SMD:R_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: frm121wfr005tm-etched.step / frm121wfr005tm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); frm121wfr005tm.step / frm121wfr005tm.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 2026-10-16, 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, primary two-terminal convention (convention), consensus off (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