FC4T Series
Metal Foil Low Value Chip
The FC4T chip features four terminals, also known
as a “Kelvin” configuration. This configuration
enables current to be applied through two opposite
terminals and a sensing voltage to be measured
across the other two terminals, eliminating the resistance and temperature coefficient of the terminals
for a more accurate current measurement. Ohmite’s
proprietary Metal Foil technology offers an excellent
Temperature Coefficient of Resistance (TCR) even
for very low resistance values ( down to 50ppm).
S e r i e s S p e c i f i c at i o n s
Pkg.
Series
Size
FC4T
1206
Power
Resistance
Rating
Range
TCR
(W @70°C)
(Ω)
(ppm/°C)
0.5W
0.005-0.100
50ppm
Tolerance
0.5%, 1%
c h a r a ct e r i st i cs
Resistance Tolerance 0.5% and 1% standard
Temperature Coefficient within ±50ppm, ±100ppm for 5mΩ
Coating Material Epoxy resin
Terminals Cu/Ni/Sn
Max. Current √(Max. power÷ Resistance value)
Res. of Electrodes 95%
Resistance to Solder Heat ±(1.0%+0.5mΩ)
Mechanical Shock ±(1.0%+0.5mΩ)
Vtest=Vmax; T=60 ±2ºC; RH=95%; t= 90min ON, 30min OFF, 1000h; IEC60115-1 4.25
(60℃, 95%RH)
-55ºC 30min. / R.T. 3min. / +150ºC 30min. / R.T. 3min ], 100cycles; IEC60115-1 4.19
Vtest=Vmax; T=70 ±2ºC; t=90min ON; IEC60115-1 4.25
Dip into solder at T=245 ±5ºC, t=3 ±0.5sec.; IEC60115-1 4.17
Through Reflow T=275 ±5ºC, t=20 ±1sec.; IEC60115-1 4.18
a=100G, t=11ms, 5 times shock; IEC60115-1 4.21
Substrate Bending ±(1.0%+0.5mΩ)
Span between fulcrums 90mm; bend width 2mm; test board glass-epoxy;
Thickness=1.6mm; IEC60115-1 4.33
dimensions
(mm ±0.2)
L
b
c
d
e
W
V
a
Part
FC4T
Schematic
f
t
V
Layout for
illustration only,
part can be
rotated 180°
without effect to
the circuit.
I
I
V = sensing terminal
(voltage)
I = current terminal
g
L
W
a
b
c
t
d
e
f
g
3.2
1.6
0.6
0.55
0.3
0.6
1.10
0.30
1.2
1.8
Tape and Reel
T
K
P
D0
Direction
of feed
P2
E
F
D1
T1
Part
FC4T
W
P
8.00 ±0.30 4.00 ±0.10
B
N
178 ±5
60 ±2
W1 9 ±1
A
P
A
N A
W
W1
P2
A
B
D0
F
E
T
T1
K
2.00 ±0.10
2.05 ±0.20
3.65 ±0.20
1.50 ±0.10
3.50 ±0.10
1.75 ±0.10
0.20 ±0.10
Max. 0.1
0.85 ±0.20
ORDERIN G IN F ORMA T ION
RoHS Compliant
FC4TR010DER
Series
Ohms
Tolerance Tape & Reel
F= 1%
5000/reel
D = 0.5%
Standard Part Numbers
1%
FC4TR005FER
FC4TR010FER
FC4TR015FER
FC4TR050FER
FC4TR100FER
0.5%
FC4TR010DER
FC4TR015DER
FC4TR050DER
FC4TR100DER
rev 1/18-3
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
13
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