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FPR 2-T218
Precision Shunt Resistors
? 
? 
? 
? 
? 
? 
Resistances from 0.002Ohm to 50Ohms
Power Rating to 30Watt
Resistance Tolerances to ±0.25%
TCR to ±15ppm/°C
Load Stability to 0.1%
TO-218 (TO-247) Housing
SPECIFICATIONS
Type
Resistance Range
Power rating
free air 70°C
with heatsink
Thermal Resistance Rthj-c
Tolerances
from 0.002 Ohms
from 0.01 Ohms
from 0.02 Ohms
Stability
Temperature Coefficient
Voltage Proof
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
Housing
Connector Material
Terminals
Max. Torque
FPR 2-T218
0.002 to 50 Ohms
2W
30 W
2.5 °C/W
1% / 2% / 5%
0.5% / 1% / 2% / 5%
0.25% / 0.5% / 1% / 2% / 5%
0.1% / 0.2% / 0.5%
(depends on stress)
R > 0.2 Ohms ±15ppm/K (20 to 60°C)
R ≤ 0.2 Ohms TCR see table A next page
300 VDC
< 0.1μV/°C
-40 to 130°C
CuNiMn-Foil
anodized aluminium
PPS
Cu tinned
2
1 Nm
Derating
120
100
80
60
40
0.5%
0.2%
0.1%
Power Rating Notes -
The FPR Series Resistors must be attached to a suitable heat-
sink. The maximum internal resistor temperature is 130°C.
To specify an appropriate heatsink use the following formula :
R q H = T MAX - ( P x R q R ) - T A
P
20
0
25
50 85 100 115
Temperature of the backplate (°C)
130
Where:
R q H = Thermal Resistance of Heatsink ( K/W )
R q R = Thermal Resistance of Resistor ( K/W )
T MAX = Maximum Temperature of Resistor
T A = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
Ordering Information
Part Description: Part Type - Resistance - Tolerance
FPR 2-T218 0.068 Ohms 0.5%
Riedon Inc.
06/13
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
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