FPR 2-T218
Precision Shunt Resistors
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Resistances from 0.002 Ohm to 20 Ohms
Power Rating to 30Watt
Resistance Tolerances to ±0.25%
TCR to ±30 ppm/°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
Tolerances
from 0.002 Ohms
from 0.01 Ohms
from 0.02 Ohms
Stability (1000h)
Temperature Coefficient
R ≤ 0.01 Ohm
±300
Voltage Proof
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
Housing
Connector Material
Terminals
Max. Torque
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 ≤ 0.05 Ohm
±100
300 VDC
< 0.1µV/°C
-40°C to 130°C
CuNiMn-Foil
anodized aluminium
PPS
Cu / Tinned
2
1 Nm
R ≤ 0.5 Ohm
±50
R ˃ 0.5 Ohm
±30
FPR 2-T218
0.002 to 20 Ohms
2W
30 W
2.5 °C/W
Derating
120
Power ( % from
nominal power)
Power Rating Notes -
0.5%
0.2%
0.1%
The FPR Series Resistors must be attached to a suitable heatsink.
The maximum internal resistor temperature is 130°C.
To specify an appropriate heatsink use the following formula :
100
80
60
40
20
0
25
R
H
H
=
Where:
T
MAX
- (
P
*
R
H
R
) -
T
A
P
50
85
100
115
130
Temperature of the backplate (°C)
R
θH
= Thermal Resistance of Heatsink ( K/W )
R
θR
= 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 - Contact - Tolerance
FPR 2-T218 0.068 Ohms C 0.5%
Riedon Inc.
06/15
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
DIY/Open Source Hardware
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