FPR2-T218 Datasheet, PDF (1/2 Pages) Willow Technologies Ltd – High Stability Extremly Low-Ohm

FPR 2-T218
Precision Shunt Resistors
• Resistances from 0.002Ohm to 50Ohms
• Power Rating to 30Watt
• Resistance Tolerances to ±0.25%
• TCR to ±15ppm/K
• Load Stability to 0.1%
• TO-218 (TO-247) Housing
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
SPECIFICATIONS
FPR 2-T218
0.002 to 50 Ohms
2W
30 W
2.5 K/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/K
-40 to 130°C
CuNiMn-Foil
anodized aluminium
PPS
Cu tinned
2
1 Nm
120
100
0.5%
80
0.2%
60
0.1%
40
20
0
25
50
85
100
115
Temperature of the backplate (°C)
Derating
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_qH = T_MAX - ( P x R_qR ) - T_A
P
Where: R_qH = Thermal Resistance of Heatsink ( K/W )
R_qR = Thermal Resistance of Resistor ( K/W )
130
T_MAX = Maximum Temperature of Resistor
T_A = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
Ordering Information
Part Number - Resistance - Contact - Tolerance
FPR 2-T218 0.068 Ohms A 0.5%
Powertron GmbH Potsdamer Strasse 18a D-14513 Teltow [phone]
A Riedon Company
www.powertron.de
[phone]
Page 41
rev. 03/2006A