RES-FC4L Datasheet, PDF (1/2 Pages) Ohmite Mfg. Co. – Industry standard sizes

FC4L Series
FC4L Four Terminal Current Sense
Metal Foil Construction
F e at u r e s
• Foil Construction ensures a very stable TCR
(Temperature Coefficient of Resistance)
• Designed for automatic insertion
• Industry standard sizes
• High heat resistant use
• Low heat electromotive use
• Color: white (top) and green (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.
S ER I E S S P E C I F I C AT I O N S
Power Resistance TCR Weight
Series Rating
Range
Tol. (ppm/°C) (g)
FC4L16 0.25W 5m, 10m, 20m, ±1% ±50 0.004
50mΩ ~ 100mΩ
FC4L32 1W



1mΩ
±5%
2mΩ
±2%
3mΩ
±1%
4mΩ ~ 500mΩ ±1%
±100
±100
±100
±50
0.015
Power Resistance
Series Rating Range
Tol.
FC4L64 2W
1mΩ
±5%

2mΩ
±2%

3mΩ
±1%
4m ~ 100mΩ ±1%
10m ~ 50mΩ ±0.5%
FC4L110 5W
1mΩ
±5%

2mΩ
±2%
3mΩ ~ 100mΩ ±1%
10m ~ 50mΩ ±0.5%
TCR Weight
(ppm/°C) (g)
±100
±100
±100
±50
±50
0.038
±100
±50
±50
±50
0.110
c h a r a c t e r is t ics
Test Condition
Maximum ∆R
Max. temperature for rated power 70°C
Operating temperature range -55°C ~ +155°C (FC4L16: -40°C ~ +125°C)
Rated voltage √(Rated power x Resistance value) V
Overload (FC4L16 only) Rated power x 1.5 for 5s
±(0.5%+0.0005Ω)
In-rush current
Rated current 10 msec ON, 60 sec OFF, 10
cycles.
Series
Power Resistance In-rush Max.
Rating
Range
Power Current
±(1.0% +0.0005Ω)
FC4L16 0.25 watt 5m, 10mΩ 2.5W 5A
FC4L32 1 watt 1mΩ~9mΩ 25W 45A
10mΩ~500mΩ 12.5W 24A
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
Rapid change of temperature -55°C (30min.)/+155°C (30min.), 100 cycles ±(1.0% +0.0005Ω)
1000 cycles, FC4L16 only
±(2.0%+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)
(±0.5% FC4L16)
Moisture resistance 60°C ±2°C, 90~95% RH, Rated voltage 1.5h ±(2.0% +0.0005Ω)
ON, 0.5h OFF, 1000h
(±1.0% FC4L16)
Derating
100
80
60
Others
40
20
0
-55
FC4L16
0
50 70 100 125 155
Ambient Temperature, °C
Recommended Reflow
Temperature Profile
For lead free soldering (Sn-Ag-Cu
solder)
Preheating: 130° ~ 180° 60s ~ 90s
Heating: Over 220° 30s ~ 90s
Peak:
240° ~ 260° Max. 10s
Max. number of reflow: 2
300
250
Peak 240 ~ 260℃ Max. 10s
200
150
100
50
Preheating
130 ~ 180℃
60 ~ 90 sec.
Heating
Over 220℃
30s ~ 90s
Time (sec.)
8
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