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 e r I e S S P e C I F I C at I O N S
Power
Resistance
Series
Rating
Range
FC4L16 0.25W 5m, 10m, 20m,
50mΩ ~ 100mΩ
FC4L32 1W
1mΩ
2mΩ
3mΩ
4mΩ ~ 500mΩ
TCR Weight
Tol. (ppm/°C) (g)
±1%
±50 0.004
±5%
±2%
±1%
±1%
±100
±100
±100
±50
0.015
Power Resistance
Series
Rating
Range
FC4L64 2W
1mΩ
2mΩ
3mΩ
4m ~ 100mΩ
10m ~ 50mΩ
FC4L110 5W
1mΩ
2mΩ
3mΩ ~ 100mΩ
10m ~ 50mΩ
Maximum ∆R
TCR Weight
Tol.
(ppm/°C) (g)
±5%
±100 0.038
±2%
±100
±1%
±100
±1%
±50
±0.5%
±50
±5%
±100 0.110
±2%
±50
±1%
±50
±0.5%
±50
CharaCterIStICS
Test Condition
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
In-rush current
Rated current 10 msec ON, 60 sec OFF, 10
cycles.
Series
FC4L32
FC4L64
Power
Rating
1 watt
Resistance
Range
In-rush Max.
Power Current
2.5W
45A
24A
5A
FC4L16 0.25 watt 5m, 10mΩ
Derating
100
Percent Rated Power
80
60
40
20
0
-55
FC4L16
0
50 70 100 125 155
Ambient Temperature,
°C
Others
±(0.5%+0.0005Ω)
±(1.0% +0.0005Ω)
2 watt
FC4L110 5 watt
1mΩ~9mΩ
100W
10mΩ~100mΩ 50W
1mΩ~50mΩ
100W
1mΩ~9mΩ
25W
10mΩ~500mΩ 12.5W
In-rush current =
√(in-rush
power/resistance
value), or max. current, whichever is smaller
100A
85A
35A
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
Rapid change of temperature
-55°C (30min.)/+155°C (30min.), 100 cycles
1000 cycles, FC4L16 only
Solderability
245°C ±5°C for 3 ±0.5 sec.
Endurance at 70°C
70°C ±3°C, Rated voltage 1.5h ON, 0.5h
OFF, 1000h
Resistance to soldering heat
260°C ±5°C for 10 ±1 sec.
±(1.0% +0.0005Ω)
±(2.0%+0.0005Ω)
Min. 90% coverage
±(1.0% +0.0005Ω)
±(1.0% +0.0005Ω)
(±0.5% FC4L16)
Temperature °C
250
200
150
100
50
Peak
240 ~ 260℃ Max. 10s
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)
Preheating
130 ~ 180℃
60 ~ 90 sec.
Over 220℃
30s ~ 90s
Heating
Time (sec.)
8
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
FC4L Series
FC4L Four Terminal Current Sense
Metal Foil Construction
W
2
t
1.
Alumina substrate
2.
Resistive element
(Ni-Cu-Mn alloy)
3.
Electrode (Ni, Sn)
d
4.
Protective coating
(Epoxy resin)
5.
Marking (Epoxy
c
resin):
wider mark
b
indicates “V” term.
Direction
P
2
t
of feed
b
(in./mm)
mm ±0.15
0.30 ±.2
c
mm ±0.1
0.3 ±.2
0.5
1.1
0.2
d
mm ±0.15
1.0 ±.2
5.2
8.5
2.6
DIMeNSIONS
“I” term.
Land Pattern
c
d
e
a
b
(mm)
FC4L16
FC4L32
a
0.25
0.4
2.0
b
1.2
2.7
c
0.40
0.7
0.35
1.6
d
0.30
0.3
0.5
e
1.2
2.7
1
L
R010
3
“V” term.
4
5
T
Rating
FC4L32
FC4L16
0.25 watt
2 watt
1 watt
FC4L110
FC4L64
5 watt
T
2
0.251 / 6.40
L
D
0
W
(in.±.008/mm ±0.20)
E
0.063 / 1.60
0.031 / 0.8
F
/ 3.20
0.126
0.063 / 1.6
0.126 / 3.2
P
0
0.5mm +0.2/-0.05
0.433 / 11.0
0.197 / 5.0
D
1
P
1
0.014 / 0.35
W
0.35
B
0.020 / 0.5
0.7
0.028 / 0.7
A
1.4
0.010 / 0.26
FC4L64
FC4L110
3.2
4.4
5.6
1.1
5.4
8.7
Pa C k a g I N g S P e C I F I C at I O N S
Tape
inches (mm)
Reel
T
E
F
D
0
P
0
P
2
Direction
of feed
H N A
B
D
1
FC4L32
0.075 (1.90 ±0.1)
0.138 (3.50 ±0.1)
0.315 (8.00 ±0.2)
0.069 (1.75 ±0.1)
0.157 (4.0 ±0.1)
0.157 (4.0 ±0.1)
0.138 (3.50 ±0.05)
W
E
FC4L110
0.213 (5.40 ±0.10)
0.453 (11.50 ±0.10)
0.069 (1.75 ±0.10)
A
H
E
N
FC4L16
7.087 (180 +0/-3)
0.512 (13 ±0.2)
0.079 (2.0 ±0.5)
0.354 (9.0 ±0.3)
2.362 (60 +1/-0)
FC4L32 & 64
7.087 (180 +0/-3)
0.512 (13 ±0.2)
0.079 (2.0 ±0.5)
0.512 (13.0 ±0.3)
0.669 (17.0 ±1.4)
2.362 (60 +1/-0)
T
2
FC4L16
B
F
A
0.073 (1.85±0.05)
0.315 (8.00±0.10)
0.138 (3.50±0.05)
0.069 (1.75±0.10)
0.157 (4.00±0.10)
0.157 (4.00±0.10)
0.079 (2.00±0.05)
0.037 (0.95±0.05)
P
1
A
FC4L64
0.135 (3.43 ±0.2)
0.261 (6.63 ±0.2)
0.472 (12.0 ±0.3)
0.069 (1.75 ±0.1)
0.217 (5.5 ±0.05)
0.157 (4.0 ±0.1)
0.157 (4.0 ±0.1)
W
2
W
1
FC4L110
7.087
(180
±2.0)
0.512 (13 ±0.2)
0.079 (2.0 ±0.5)
1.000 (25.4 ±1.0)
1.157 (29.4 ±1.0)
0.827
(21 ±0.8)
W
E
0.945 (24.00 ±0.30)
0.453 (11.50 ±0.10)
0.157 (4.00 ±0.10)
0.315 (8.00 ±0.10)
0.079 (2.00 ±0.10)
0.059 (1.50 ±0.10)
0.059 (1.50 ±0.10)
P
0
P
1
P
2
D
0
D
1
T
W
2
W
1
0.512 (13.0 ±0.3)
0.059 (1.50+0.10/-0) 0.059 (1.50 +0.1/-0) 0.059 (1.5 +0.1/-0)
0.024 (0.60±0.05)
0.008 (0.20 ±0.05)
0.039 (1.00 ±0.2)
0.039 (1.00 +0.2/-0) 0.059 (1.5 +0.2/-0)
0.008 (0.20 ±0.05)
0.059 (1.5) max.
0.079 (2.0 ±0.05)
0.079 (2.0 ±0.05)
T
2
0.008 (0.20±0.05)
0.022 (0.55±0.05)
0.012 (0.30 ±0.05)
0.047 (1.2 ±0.15)
O r D e r I N g I N F O r M at I O N
Ohms
R005=0.005
R050=0.050
Standard Part Numbers for FC4L series
RoHS Compliant
0.25 watt
1 watt
FC4L32R001JER
FC4L32R002GER
FC4L32R003FER
FC4L32R005FER
FC4L32R010FER
FC4L32R015FER
FC4L32R020FER
FC4L32R025FER
FC4L32R030FER
FC4L32R050FER
FC4L32R100FER
9
2 watt
FC4L64R001JER
FC4L64R002GER
FC4L64R003FER
FC4L64R005FER
FC4L64R010DER
FC4L64R010FER
FC4L64R015DER
FC4L64R015FER
FC4L64R020DER
FC4L64R020FER
FC4L64R025DER
FC4L64R025FER
FC4L64R030DER
FC4L64R030FER
FC4L64R050DER
FC4L64R050FER
FC4L64R100FER
5 watt
FC4L110R001JER
FC4L110R002GER
FC4L110R003FER
FC4L110R005FER
FC4L110R010DER
FC4L110R010FER
FC4L110R015DER
FC4L110R015FER
FC4L110R020DER
FC4L110R020FER
FC4L110R025DER
FC4L110R025FER
FC4L110R030DER
FC4L110R030FER
FC4L110R050DER
FC4L110R050FER
FC4L110R100FER
FC4L110R005FER
Series
TCR*
(ppm)
W = 25
V = 50
L =
per chart
above
Package Size
110=11050=5W
64=6432=2W
32=3216=1W
16=1608=0.25W
Tolerance Taping Code
1,000 pc/reel
J = 5%
FC4L16: 5,000 pc/reel
G = 2%
F = 1%
D = 0.5%
FC4L16R005FER
FC4L16R010FER
FC4L16R015FER
FC4L16R020FER
FC4L16R025FER
FC4L16R030FER
FC4L16R050FER
FC4L16R100FER
*FC4L32 and FC4L64 values over 0.100Ω only
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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