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
FCSL64 2.0W
1m
2m
±5% ±150 0.036
±2% ±100
70°C
(10W: 100°C)
Max. temperature
for rated power
3m ~ 100m ±1%
10m ~ 50mΩ ±0.5% ±50
±50
-55°C ~ +155°C
Operating
temp. range
FCSL76 3.0W
FCSL90 4.0W
FCSL110 5.0W
1m
2m
±5% ±150 0.050
±2% ±100
±50
±5% ±150 0.071
±2% ±100
√(Rated power x Resistance
value) V
Rated voltage
3m ~ 100m ±1%
Rated current 10 msec ON,
60 sec OFF, 10 cycles* (see
table below)
±(1.0% +0.0005Ω)
In-rush current*
1m
2m
-55°C (30min.)/+155°C
(30min.), 100 cy.
-40℃ (30min), Room temp
(3min), +125℃ (30min),
Room temp (3min), 1000 cy.,
FCSL150 only
±(1.0% +0.0005Ω)
Rapid change of
3m ~ 100m ±1%
±50
temperature
1m
2m
±5% ±150 0.096
±2% ±100
±0.6%
3m ~ 100m ±1%
10m ~ 50mΩ ±0.5% ±50
±50
FCSL150 10.0W
1m
2m
±5% ±100 0.316
±2% ±100
245°C ±5°C for 3 ±0.5 sec.
Min. 90% cover-
age
Solderability
3m ~ 100m ±1% ±100
(>9m:±50)
70°C ±3°C, Rated voltage
1.5h ON, 0.5h OFF, 1000h
±(1.0% +0.0005Ω)
±(0.5% +0.0005Ω)
±(2.0% +0.0005Ω)
Endurance at
70°C
260°C ±5°C for 10 ±1 sec.
Resistance to
soldering heat
Recommended Reflow
Temperature Profile
60°C ±2°C, 90~95% RH,
Rated voltage 1.5h ON, 0.5h
OFF, 1000h
Moisture
resistance
Derating
For lead free soldering (Sn-Ag-Cu
solder)
100
80
60
40
20
0
(10W)
±(1.0%+0.0005Ω)
Terminal strength 10W: Bending width: 2mm
for 10s±1s, Glass epoxy sub-
strate 1.6mm thick
Preheating:ꢀ 130°ꢀ~ꢀ180°ꢀ 60sꢀ~ꢀ90s
Heating:ꢀ Overꢀ220°ꢀ 30sꢀ~ꢀ90s
Peak:ꢀ
240°ꢀ~ꢀ260°ꢀ Max.ꢀ10s
*In-rush Current
1mΩ~10mΩ
Rated In-rush Max.
Series Wattage Power Current Power Current
Max.ꢀnumberꢀofꢀreflow:ꢀ2
12mΩ~100mΩ
In-rush Max.
300
240 ~ 260℃ Max. 10s
Peak
-55
0
50 70 100
155
250
200
150
100
50
Ambient Temperature, °C
FCSL64
FCSL76
FCSL90
FCSL110 5W
FCSL150 10W
2W
3W
4W
225W
325W
440W
600W
700W
125A
150A
180A
240A
270A
150W
210W
300W
440W
470W
70A
80A
100A
120A
140A
In-rushꢀcurrentꢀ=ꢀ√(in-rush
power/resistance value), or
max. current, whichever is
smaller
Heating
Over 220℃
30s ~ 90s
Preheating
130 ~ 180℃
60 ~ 90 sec.
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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