FCSL Series
Metal Foil Current Sense
Ohmite continues to add to its complement
of Current Sense offerings with the FCSL
Series. FCSL incorporates proven metal foil
technology to produce the ultimate in a cur-
rent sense resistor. FCSL features the effec-
tive combination of very low and stable TCRs
(Temperature Coefficient of Resistance) avail-
able in a wide selection of very low ohmic
values. Power ratings up to 10 Watts makes
FCSL the ideal choice for your current sens-
ing applications.
F ꢀ at u ꢁ ꢀ S
•ꢀFoilꢀConstructionꢀensuresꢀaꢀveryꢀstableꢀTCRꢀ(Temperatureꢀ
Coefficient of Resistance)
•ꢀDesignedꢀforꢀautomaticꢀinsertion
•ꢀIndustryꢀstandardꢀsizes
•ꢀHighꢀheatꢀresistantꢀuse
•ꢀLowꢀheatꢀelectromotiveꢀuse
•ꢀColor:ꢀwhiteꢀ(top)ꢀandꢀgreenꢀ(bottom)
SꢀꢁꢂꢀS SpꢀCꢂFꢂCatꢂonS
ChaꢁaCtꢀꢁꢂStꢂCS
Power Resistance
Rating Range (mΩ) Tol. (ppm/°C) (g)
TCR Weight
Test Condition
(10W) Rated power x1.5, 5s
Maximum ∆R
Series
±(1.0%+0.0005Ω)
Overload
FCSL20 1.0W
2m
3m ~ 4m ±2% ±100
5m ~ 9m ±1% ±100
10m ~ 50mΩ ±1%
±5% ±100 0.025
70°C
(10W: 100°C)
Max. temperature
for rated power
-55°C ~ +155°C
Operating
temp. range
±50
FCSL32 1.5W 1m ~ 2m
±5% ±100 0.030
√(Rated power x Resistance
value) V
Rated voltage
3m ~ 4m ±2% ±100
5m ~ 9m
10m ~ 50mΩ ±1%
±1% ±100
Rated current 10 msec ON,
60 sec OFF, 10 cycles* (see
table below)
±(1.0% +0.0005Ω)
In-rush current*
±50
FCSL64 2.0W
FCSL76 3.0W
FCSL90 4.0W
FCSL110 5.0W
FCSL150 10.0W
1m
2m
±5% ±150 0.036
±2% ±100
-55°C (30min.)/+155°C
(30min.), 100 cy.
-55℃ (30min), Room temp
(3min), +155℃ (30min),
Room temp (3min), 100 cy.,
FCSL20 & 32 only
-40℃ (30min), Room temp
(3min), +125℃ (30min),
Room temp (3min), 1000 cy.,
FCSL150 only
±(1.0% +0.0005Ω)
±(1.0% +0.0005Ω)
Rapid change of
temperature
3m ~ 100m ±1%
5m ~ 50mΩ ±0.5% ±50
±50
1m
±5% ±150 0.050
±2% ±100
±50
5m ~ 50mΩ ±0.5% ±50
2m
±0.6%
3m ~ 100m ±1%
1m
±5% ±150 0.071
±2% ±100
±50
5m ~ 50mΩ ±0.5% ±50
2m
245°C ±5°C for 3 ±0.5 sec.
Min. 90% cover-
age (FCSL20-32:
95%)
Solderability
3m ~ 100m ±1%
1m
2m
±5% ±150 0.096
±2% ±100
±50
5 m ~ 50mΩ ±0.5% ±50
70°C ±3°C, Rated voltage
1.5h ON, 0.5h OFF, 1000h
±(1.0% +0.0005Ω)
(FCSL20-32:
±(2.0% +0.0005Ω))
Endurance at
70°C
3m ~ 100m ±1%
260°C ±5°C for 10 ±1 sec.
±(0.5% +0.0005Ω)
(FCSL20-32: No
evid. of mech.
damage)
Resistance to
soldering heat
1m
2m
±5% ±100 0.316
±2% ±100
3m ~ 100m ±1% ±100
(>9m:±50)
60°C ±2°C, 90~95% RH,
Rated voltage 1.5h ON, 0.5h
OFF, 1000h
±(2.0% +0.0005Ω)
Moisture
resistance
*In-rush Current
1mΩ~10mΩ
Rated In-rush Max.
Series Wattage Power Current Power Current
±(1.0%+0.0005Ω)
Terminal strength 10W: Bending width: 2mm
for 10s±1s, Glass epoxy sub-
strate 1.6mm thick
12mΩ~100mΩ
In-rush Max.
FCSL20
1W
20W
56W
225W
325W
440W
600W
700W
45A
64A
125A
150A
180A
240A
270A
14W
36W
150W
210W
300W
440W
470W
20A
35A
In-rushꢀcurrentꢀ=ꢀ
√(in-rush power/resis-
tance value), or max.
current, whichever is
smaller
FCSL32 1.5W
FCSL64
FCSL76
FCSL90
FCSL110 5W
FCSL150 10W
2W
3W
4W
70A
80A
100A
120A
140A
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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