FC4L Series
FC4L Four Terminal Current Sense
Metal Foil Construction
F ꢀ at u ꢁ ꢀ S
•ꢀFoilꢀConstructionꢀensuresꢀaꢀveryꢀstableꢀTCRꢀ
(TemperatureꢀCoefficientꢀofꢀResistance)
•ꢀDesignedꢀforꢀautomaticꢀinsertion
•ꢀIndustryꢀstandardꢀsizes
•ꢀHighꢀheatꢀresistantꢀuse
•ꢀLowꢀheatꢀelectromotiveꢀuse
•ꢀColor:ꢀwhiteꢀ(top)ꢀandꢀgreenꢀ(bottom)
Ohmite extends its FC4L 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.
SꢀꢁIꢀS SPꢀCIFICatIONS
Power
Rating
Resistance
Range
TCR Weight
Tol. (ppm/°C) (g)
Power Resistance
TCR Weight
(ppm/°C) (g)
±100 0.038
±100
±100
±50
Series
Series
Rating
FC4L64 2W
Range
1mΩ
2mΩ
3mΩ
Tol.
±5%
±2%
±1%
FC4L16 0.25W 5m, 10m, 20m, ±1%
±50 0.004
50mΩ ~ 100mΩ
FC4L32 1W
1mΩ
2mΩ
3mΩ
±5% ±100 0.015
±2% ±100
±1% ±100
4m ~ 100mΩ ±1%
10m ~ 50mΩ ±0.5%
±50
4mΩ ~ 500mΩ ±1%
±50
FC4L110 5W
1mΩ
2mΩ
±5%
±2%
±100 0.110
±50
3mΩ ~ 100mΩ ±1%
10m ~ 50mΩ ±0.5%
±50
±50
ChaꢁaCtꢀꢁIStICS
Maximum ∆R
Test Condition
Derating
100
70°C
Max. temperature for rated power
Operating temperature range
Rated voltage
80
60
40
20
-55°C ~ +155°C (FC4L16: -40°C ~ +125°C)
√(Rated power x Resistance value) V
Rated power x 1.5 for 5s
Others
±(0.5%+0.0005Ω)
±(1.0% +0.0005Ω)
Overload (FC4L16 only)
In-rush current
Rated current 10 msec ON, 60 sec OFF, 10
cycles.
FC4L16
0
-55
Power
Rating
Resistance
Range
In-rush Max.
Power Current
0
50 70 100 125 155
Series
Ambient Temperature, °C
FC4L16 0.25 watt 5m, 10mΩ
2.5W
5A
FC4L32 1 watt
1mΩ~9mΩ
25W
45A
Recommended Reflow
Temperature Profile
For lead free soldering (Sn-Ag-Cu
solder)
Preheating:ꢀ 130°ꢀ~ꢀ180°ꢀ 60sꢀ~ꢀ90s
Heating:ꢀ Overꢀ220°ꢀ 30sꢀ~ꢀ90s
10mΩ~500mΩ 12.5W 24A
FC4L64 2 watt
1mΩ~9mΩ
10mΩ~100mΩ 50W
100W 85A
35A
FC4L110 5 watt 1mΩ~50mΩ 100W 100A
In-rush current = √(in-rush power/resistance
value), or max. current, whichever is smaller
-55°C (30min.)/+155°C (30min.), 100 cycles
1000 cycles, FC4L16 only
±(1.0% +0.0005Ω)
±(2.0%+0.0005Ω)
Rapid change of temperature
Peak:ꢀ
240°ꢀ~ꢀ260°ꢀ Max.ꢀ10s
Max.ꢀnumberꢀofꢀreflow:ꢀ2
245°C ±5°C for 3 ±0.5 sec.
Min. 90% coverage
±(1.0% +0.0005Ω)
Solderability
300
240 ~ 260℃ Max. 10s
Peak
70°C ±3°C, Rated voltage 1.5h ON, 0.5h
OFF, 1000h
Endurance at 70°C
250
200
150
100
50
260°C ±5°C for 10 ±1 sec.
±(1.0% +0.0005Ω)
(±0.5% FC4L16)
Resistance to soldering heat
Heating
Over 220℃
30s ~ 90s
Preheating
130 ~ 180℃
60°C ±2°C, 90~95% RH, Rated voltage 1.5h ±(2.0% +0.0005Ω)
ON, 0.5h OFF, 1000h
Moisture resistance
60 ~ 90 sec.
(±1.0% FC4L16)
Time (sec.)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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