FC4L Series
FC4L Four Terminal Current Sense
Metal Foil Construction
FEATURES
• FoilConstructionensuresaverystableTCR
(Temperature Coefficient of Resistance)
• Designedforautomaticinsertion
• Industrystandardsizes
• Highheatresistantuse
• Lowheatelectromotiveuse
• Color:white(top)andgreen(bottom)
SERIES SPECIFICATIONS
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 management and 2 smaller electrodes for current measurement.
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% ±100 0.015
2mΩ ±2% ±100
3mΩ ±1% ±100
4mΩ ~ 500mΩ ±1% ±50
FC4L64 2W 1mΩ ±5% ±100 0.038
2mΩ ±2% ±100
3mΩ ±1% ±100
4m ~ 100mΩ ±1% ±50
10m ~ 50mΩ ±0.5% ±50
Power Resistance TCR Weight
Series Rating Range Tol. (ppm/°C) (g)
FC4L76 3W 1m-4mΩ ±1% ±100 0.062
5m-25mΩ ±0.5%, 1% ±50
FC4L90 4W 1m-4mΩ ±1% ±100 0.082
5m-25mΩ ±0.5%, 1% ±50
FC4L110 5W 1mΩ ±5% ±100 0.110
2mΩ ±2% ±50
3mΩ ~ 100mΩ ±1% ±50
10m ~ 50mΩ ±0.5% ±50
Test Condition Maximum ∆R
Max. temperature for rated power
Operating temperature range
Rated voltage
Overload (FC4L16 only)
In-rush current
Rapid change of temperature
Solderability
Endurance
Resistance to soldering heat
Moisture resistance
CHARACTERISTICS
70°C
-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)
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)
245°C ±5°C for 3 ±0.5 sec. Min. 90% coverage
70°C ±3°C, Rated voltage 1.5h ON, 0.5h OFF, 1000h
(FC4L76 & 90: 100°C)
260°C ±5°C for 10 ±1 sec.
(FC4L76 & 90: 20 ±1)
60°C ±2°C, 90~95% RH, Rated voltage 1.5h ON, 0.5h OFF, 1,000h
(76 & 90: 85 ±2°C, 85±5%RH, 10% Rated power, 1,000h)
±(1.0% +0.0005Ω)
±(1.0% +0.0005Ω)
(FC4L16: ±(2.0%+0.0005Ω))
(FC4L76 & 90: 95%)
±(1.0% +0.0005Ω)
(FC4L76 & 90: ±(3.0%+0.5mΩ))
±(1.0% +0.0005Ω)
(FC4L16: ±0.5%)
(FC4L76 & 90: No evidence of
mechanical damage)
±(2.0% +0.0005Ω)
(FC4L16: ±1.0%)
(FC4L76 & 90: ±(3% +0.0005Ω))
8
100
Percent Rated Power
Ambient
FC4L16
Others
Temperature, ° C
60
20
0
80
40
05 0 100 125 155 70 -55
R010
3
4
1
W
L
a
2
5
1. Alumina substrate
2. Resistive element
(Ni-Cu-Mn alloy)*
3. Electrode (Ni, Sn)*
4. Protective coating
(Epoxy resin)
5. Marking (Epoxy
resin): wider mark
indicates “V” term.
*Dependent on size and value
t
d
c
b
“V” term. “I” term.
FC4L Series
Temperature °C
Time (sec.)
Preheating
130 ~ 180℃
60 ~ 90 sec.
Heating
Peak
200
50
300
250
100
150
Over 220℃
30s ~ 90s
240 ~ 260℃ Max. 10s
FC4L Four Terminal Current Sense
Metal Foil Construction
CHARACTERISTICS
Series Rating Range Power Current
FC4L16 0.25 watt 5m, 10mΩ 2.5W 5A
FC4L32 1 watt 1mΩ ~9mΩ 25W 45A
FC4L64 2 watt 1mΩ ~9mΩ 100W 85A
FC4L76 3 watt 1mΩ ~9mΩ 110W 90A
FC4L90 4 watt 1mΩ ~9mΩ 120W 95A
FC4L110 5 watt 1mΩ ~50mΩ 100W 100A
In-rush current = √ (in-rush power/resistance
value), or max. current, whichever is smaller
Power Resistance In-rush Max.
10mΩ ~500mΩ 12.5W 24A
10mΩ ~100mΩ 50W 35A
10mΩ ~***mΩ 55W 40A
10mΩ ~***mΩ 60W 45A
Derating In-rush current
DIMENSIONS
Recommended Reflow
Temperature Profile
For lead free soldering (Sn-Ag-Cu
solder)
Preheating: 130°~180° 60s~90s
Heating: Over220° 30s~90s
Peak: 240°~260° Max.10s
Max.numberofreflow:2
Land Pattern
Rating (in.±.008/mm ±0.20) (in./mm) mm ±0.15 mm ±0.1 mm ±0.15 mm
FC4L16 0.25 watt 0.063 / 1.60 0.031 / 0.8 0.010 / 0.26 0.30 ±.2 0.3 ±.2 1.0 ±.2 0.5 +.2/-.05
FC4L32 1 watt 0.126 / 3.20 0.063 / 1.6 0.014 / 0.35 0.35 0.2 2.6 0.5 +.2/-.05
FC4L64 2 watt 0.251 / 6.40 0.126 / 3.2 0.020 / 0.5 0.7 0.5 5.2 0.5 +.2/-.05
FC4L76 3 watt 0.30 / 7.60 0.15 / 3.8 0.02 / 0.55 0.75 0.60 6.15 0.60 ±.20
FC4L90 4 watt 0.35 / 9.00 0.18 / 4.5 0.03 / 0.65 0.90 0.75 7.25 0.60 ±.20
FC4L110 5 watt 0.433 / 11.0 0.197 / 5.0 0.028 / 0.7 1.4 1.1 8.5 0.5 +.2/-.05
L W a b c d t
±0.3mm ±0.3mm ±0.2mm ±0.2mm ±0.2mm ±0.3mm
±0.3mm ±0.3mm ±0.2mm ±0.2mm ±0.2mm ±0.3mm
PACKAGING SPECIFICATIONS
Reel
FC4L16 FC4L32 & 64 FC4L76 & 90 FC4L110
A 7.087 (180 +0/-3) 7.087 (180 +0/-3) 7.087 (180 +1.0/-3.0) 7.087 (180 ±2.0)
H 0.512 (13 ±0.2) 0.512 (13 ±0.2) 0.512 (13 ±0.2) 0.512 (13 ±0.2)
E 0.079 (2.0 ±0.5) 0.079 (2.0 ±0.5) 0.079 (2.0 ±0.5) 0.079 (2.0 ±0.5)
N 2.362 (60 +1/-0) 2.362 (60 +1/-0) 2.362 (60 +1/-0) 0.827 (21 ±0.8)
W1 0.354 (9.0 ±0.3) 0.512 (13.0 ±0.3) 0.827 (21 ±0.8) 1.000 (25.4 ±1.0)
W2 0.512 (13.0 ±0.3) 0.669 (17.0 ±1.4) 0.669 (17.0 ±.3) 1.157 (29.4 ±1.0)
(mm) a b c d e
FC4L16 0.25 1.2 0.40 0.30 1.2
FC4L32 0.4 2.7 0.35 0.3 2.7
FC4L64 2.0 4.4 0.7 0.5 5.4
FC4L76 2.4 4.80 0.95 0.45 6.60
FC4L90 2.8 5.60 1.10 0.55 7.80
FC4L110 3.2 5.6 1.6 1.1 8.7
(continued)
9
FC4L Series
FC4L110R005FE R
Series
To lerance
J= 5%
G= 2%
F= 1%
D = 0.5%
Ohms
R005=0.005 Ω
R050=0.050 Ω
Taping Code
1,000 pc/reel
FC4L16: 5,000 pc/reel
RoHS Complian t
Package Size
110=11050=5W
64=6432=2W
32=3216=1W
16=1608=0.25W
TCR* (ppm)
W = 25
V = 50
L = per chart
above
*FC4L32 and FC4L64 values over 0.100Ω only
A
B
P
0
P
2
D
0
E
F
W
D
1
P
1
T
T
2
Direction
of feed
A
B
P
0
P
2
D
0
E
F
W
D
1
P
1
T
T
2
Direction
of feed
FC4L Four Terminal Current Sense
Metal Foil Construction
PACKAGING SPECIFICATIONS
(continued)
Tape
inches (mm)
FC4L16 FC4L32 FC4L64 FC4L76 FC4L90 FC4L110
A 0.037 (0.95±0.05) 0.075 (1.90 ±0.1) 0.135 (3.43 ±0.2) 0.163 (4.15 ±0.20) 0.191 (4.85 ±0.20) 0.213 (5.40 ±0.10)
B 0.073 (1.85±0.05) 0.138 (3.50 ±0.1) 0.261 (6.63 ±0.2) 0.313 (7.95 ±0.20) 0.368 (9.35 ±0.20) 0.453 (11.50 ±0.10)
W 0.315 (8.00±0.10) 0.315 (8.00 ±0.2) 0.472 (12.0 ±0.3) 0.630 (16.00 ±0.30) 0.630 (16.00 ±0.30) 0.945 (24.00 ±0.30)
F 0.138 (3.50±0.05) 0.138 (3.50 ±0.05) 0.069 (1.75 ±0.1) 0.295 (7.50 ±0.10) 0.295 (7.50 ±0.10) 0.069 (1.75 ±0.10)
E 0.069 (1.75±0.10) 0.069 (1.75 ±0.1) 0.217 (5.5 ±0.05) 0.069 (1.75 ±0.10) 0.069 (1.75 ±0.10) 0.453 (11.50 ±0.10)
P0 0.157 (4.00±0.10) 0.157 (4.0 ±0.1) 0.157 (4.0 ±0.1) 0.157 (4.00 ±0.10) 0.157 (4.00 ±0.10) 0.157 (4.00 ±0.10)
P1 0.157 (4.00±0.10) 0.157 (4.0 ±0.1) 0.157 (4.0 ±0.1) 0.315 (8.00 ±0.10) 0.315 (8.00 ±0.10) 0.315 (8.00 ±0.10)
P2 0.079 (2.00±0.05) 0.079 (2.0 ±0.05) 0.079 (2.0 ±0.05) 0.079 (2.00 ±0.10) 0.079 (2.00 ±0.10) 0.079 (2.00 ±0.10)
D0 0.059 (1.50+0.10/-0) 0.059 (1.50 +0.1/-0) 0.059 (1.5 +0.1/-0) 0.059 (1.50 ±0.10) 0.059 (1.50 ±0.10) 0.059 (1.50 ±0.10)
D1 0.024 (0.60±0.05) 0.039 (1.00 +0.2/-0) 0.059 (1.5 +0.2/-0) 0.059 (1.50 ±0.10)
T 0.008 (0.20±0.05) 0.008 (0.20 ±0.05) 0.008 (0.20 ±0.05) 0.012 (0.30 ±0.10) 0.012 (0.30 ±0.10) 0.012 (0.30 ±0.05)
T2 0.022 (0.55±0.05) 0.039 (1.00 ±0.2) 0.059 (1.5) max. 0.063 (1.60) max. 0.063 (1.60) max. 0.047 (1.2 ±0.15)
Standard Part Numbers for FC4L series
0.25 watt 1 watt 2 watt 3 watt 4 watt 5 watt
FC4L16R005FER FC4L32R005FER FC4L64R005FER FC4L76R005FER FC4L90R005FER FC4L110R005FER
FC4L16R010FER FC4L32R010FER FC4L64R010FER FC4L76R010FER FC4L90R010FER FC4L110R010FER
FC4L16R015FER FC4L32R015FER FC4L64R015FER FC4L76R015FER FC4L90R015FER FC4L110R015FER
FC4L16R020FER FC4L32R020FER FC4L64R020FER FC4L76R020FER FC4L90R020FER FC4L110R020FER
FC4L16R025FER FC4L32R025FER FC4L64R025FER FC4L76R025FER FC4L90R025FER FC4L110R025FER
FC4L16R030FER FC4L32R030FER FC4L64R030FER FC4L110R030FER
FC4L16R050FER FC4L32R050FER FC4L64R050FER FC4L110R050FER
FC4L16R100FER FC4L32R100FER FC4L64R100FER FC4L110R100FER
rev 8/19-1
10
ORDERING INFORMATION
FC4L32R001JER FC4L64R001JER FC4L110R001JER
FC4L32R002GER FC4L64R002GER FC4L110R002GER
FC4L32R003FER FC4L64R003FER FC4L76R003FER FC4L90R003FER FC4L110R003FER
FC4L64R010DER FC4L110R010DER
FC4L64R015DER FC4L110R015DER
FC4L64R020DER FC4L110R020DER
FC4L64R025DER FC4L110R025DER
FC4L64R030DER FC4L110R030DER
FC4L64R050DER FC4L110R050DER
FC4L76R001GER FC4L90R001GER
FC4L76R002FER FC4L90R002FER