FC4L Series
FC4L Four Terminal Current Sense
Metal Foil Construction
F ꢀ at u ꢁ ꢀ S
•ꢀFoilꢀConstructionꢀensuresꢀaꢀveryꢀstableꢀTCRꢀ
(Temperature Coefficient of Resistance)
•ꢀDesignedꢀforꢀautomaticꢀinsertion
•ꢀIndustryꢀstandardꢀsizes
•ꢀHighꢀheatꢀresistantꢀuse
•ꢀLowꢀheatꢀelectromotiveꢀuse
•ꢀColor:ꢀwhiteꢀ(top)ꢀandꢀgreenꢀ(bottom)
Ohmite offers the low TCR FC4L series in 0.25 watts up to
5 watts and values down to 1 milli-ohm. Great stability is
achieved by employing a Ni-Cu-Mn resistive element. The
FC4L series affords the user an added advantage of a built in
4-terminal design with 2 larger electrodes for current man-
agement 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 0.062
Series
Series
Rating
Range
Tol.
±1%
FC4L16 0.25W 5m, 10m, 20m, ±1%
±50 0.004
FC4L76 3W
FC4L90 4W
FC4L110 5W
1m-4mΩ
50mΩ ~ 100mΩ
5m-25mΩ ±0.5%, 1% ±50
1m-4mΩ ±1% ±100 0.082
5m-25mΩ ±0.5%, 1% ±50
FC4L32 1W
FC4L64 2W
1mΩ
2mΩ
3mΩ
±5% ±100 0.015
±2% ±100
±1% ±100
1mΩ
2mΩ
±5%
±2%
±100 0.110
4mΩ ~ 500mΩ ±1%
±50
±100 0.038
±100
±50
±50
±50
1mΩ
2mΩ
3mΩ
±5%
±2%
±1%
3mΩ ~ 100mΩ ±1%
10m ~ 50mΩ ±0.5%
±100
4m ~ 100mΩ ±1%
10m ~ 50mΩ ±0.5%
±50
±50
ChaꢁaCtꢀꢁIStICS
Test Condition
Maximum ∆R
70°C
Max. temperature for rated power
Operating temperature range
Rated voltage
-55°C ~ +155°C (FC4L16: -40°C ~ +125°C)
√(Rated power x Resistance value) V
Rated power x 1.5 for 5s
±(0.5%+0.0005Ω)
±(1.0% +0.0005Ω)
Overload (FC4L16 only)
In-rush current
Rated current 10 msec ON, 60 sec OFF, 10 cycles.
(see table next page)
-55°C (30min.)/+155°C (30min.), 100 cycles
(FC4L16: 1000 cycles)
±(1.0% +0.0005Ω)
(FC4L16: ±(2.0%+0.0005Ω))
Rapid change of temperature
Solderability
245°C ±5°C for 3 ±0.5 sec.
Min. 90% coverage
(FC4L76 & 90: 95%)
70°C ±3°C, Rated voltage 1.5h ON, 0.5h OFF, 1000h
(FC4L76 & 90: 100°C)
±(1.0% +0.0005Ω)
(FC4L76 & 90: ±(3.0%+0.5mΩ))
Endurance
260°C ±5°C for 10 ±1 sec.
(FC4L76 & 90: 20 ±1)
±(1.0% +0.0005Ω)
(FC4L16: ±0.5%)
(FC4L76 & 90: No evidence of
mechanical damage)
Resistance to soldering heat
60°C ±2°C, 90~95% RH, Rated voltage 1.5h ON, 0.5h OFF, 1,000h ±(2.0% +0.0005Ω)
Moisture resistance
(76 & 90: 85 ±2°C, 85±5%RH, 10% Rated power, 1,000h)
(FC4L16: ±1.0%)
(FC4L76 & 90: ±(3% +0.0005Ω))
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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