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Current
SenSe
Metal Foil/
Kelvin
FC4L Series
FC4L Four Terminal Current Sense
Metal Foil Construction
Ohmite extends its FCSL Series with this 4-terminal Kelvin
type FC4L derivative in 2 watt and 5 watt package sizes.
Employing the same Ni-Cu-Mn resistive element this prod-
uct affords the user an added advantage of a built in 4-ter-
minal design with 2 larger electrodes for current manage-
ment and 2 smaller electrodes for current measurement.
Power Resistance TCR Weight
Series Rating Range Tol. (ppm/°C) (g)
FC4L64 2W 1mΩ ±5% ±100 0.0378
2mΩ ±2% ±100
3mΩ ±1% ±100
4mΩ ~ 100mΩ ±1% ±50
FC4L110 5W 1mΩ ±5% ±100 0.1096
2mΩ ±2% ±50
3mΩ ~ 50mΩ ±1% ±50
FEATURES
•FoilConstructionensuresaverystableTCR
(TemperatureCoefficientofResistance)
•Designedforautomaticinsertion
•Industrystandardsizes
•Highheatresistantuse
•Lowheatelectromotiveuse
•Color:white(top)andgreen(bottom)
100
Percent Rated Power
Ambient Temperature, °C
60
20
0
80
40
050 100 15570-55
SERIES SPECIFICATIONS
CHARACTERISTICS
Test Condition Maximum ∆R
Max. temperature for rated power
70°C
Operating temperature range
-55°C ~ +155°C
Rated voltage
√(Rated power x Resistance value) V
In-rush current
Rated current 10 msec ON, 60 sec OFF, 10
cycles.
Power Resistance In-rush Max.
Series Rating Range Power Current
FC4L64 2 watt 1mΩ~9mΩ 100W 85A
10mΩ~100mΩ 50W 35A
FC4L110 5 watt 1mΩ~50mΩ 100W 100A
In-rush current = √(in-rush power/resistance
value), or max. current, whichever is smaller
±(1.0% +0.0005Ω)
Rapid change of temperature
-55°C (30min.)/+155°C (30min.), 100 cycles ±(1.0% +0.0005Ω)
Solderability
245°C ±5°C for 3 ±0.5 sec. Min. 90% coverage
Endurance at 70°C
70°C ±3°C, Rated voltage 1.5h ON, 0.5h
OFF, 1000h
±(1.0% +0.0005Ω)
Resistance to soldering heat
260°C ±5°C for 10 ±1 sec. ±(1.0% +0.0005Ω)
Moisture resistance
60°C ±2°C, 90~95% RH, Rated voltage 1.5h
ON, 0.5h OFF, 1000h
±(2.0% +0.0005Ω)
Derating
