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
FPR 2-T218
Resistance Range
0.002 to 50 Ohms
Power rating
free air 70°C
with heatsink
2 W
30 W
Thermal Resistance Rthj-c
2.5 °C/W
Tolerances
from 0.002 Ohms
from 0.01 Ohms
from 0.02 Ohms
1% / 2% / 5%
0.5% / 1% / 2% / 5%
0.25% / 0.5% / 1% / 2% / 5%
Stability
0.1% / 0.2% / 0.5%
(depends on stress)
Temperature Coefficient
R > 0.2 Ohms ±15ppm/K (20 to 60°C)
R ≤ 0.2 Ohms TCR see table A next page
Voltage Proof
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
300 VDC
< 0.1µV/°C
-40 to 130°C
CuNiMn-Foil
anodized aluminium
PPS
Housing
Connector Material
Terminals
Cu tinned
2
Max. Torque
1 Nm
Derating
Power Rating Notes -
120
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 :
0.5%
100
0.2%
80
0.1%
60
RqH = TMAX - ( P x RqR ) - TA
40
20
0
P
Where: RqH = Thermal Resistance of Heatsink ( K/W )
RqR = Thermal Resistance of Resistor ( K/W )
TMAX = Maximum Temperature of Resistor
TA = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
25
50
85
100
115
130
Temperature of the backplate (°C)
Ordering Information
Part Description: Part Type - Resistance - Tolerance
FPR 2-T218 0.068 Ohms 0.5%
Riedon Inc.
300 Cypress Avenue
Alhambra CA 91801
(626) 284-9901
(626) 284-1704
www.riedon.com
06/13
RIEDON [ RIEDON POWERTRON ]
