FHR 4-2321
FEATURES
•
•
•
•
•
•
Resistances from 0.001Ohm to 50Ohms
Power Rating to 40Watt
Resistance Tolerances to ±0.1%
TCR to ±15ppm/K
Very Low Inductance
Load Stability to 0.1%
TABLE 1—SPECIFICATIONS
TYPE
Resistance Range
Power Rating
Tolerances
from 0R001
from 0R005
from 0R01
Thermal Resistance
Stability (1000h)
Temperature Coefficient
0.001 to 100 Ohms (Q)
Option 1 (P) upon request for selected values
Voltage Proof
< 0R005
≥ 0R005
Maximum Current
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
Housing
Connector Material
Terminals
Max. Torque
Free air 70°C
With heatsink
3W
40W
1% / 2% / 5%
0.5% / 1% / 2% / 5%
0.1% / 0.25% / 0.5% / 1% / 2% / 5%
2.0 K/W
0.1% / 0.2% / 0.5%
(depends on stress)
±25ppm/K (20 to 60°C)
±15ppm/K (20 to 60°C)
other specifications upon request
300 VDC
500 VAC
150 A
< 1µV/K
-40 to 130 °C
CuNiMn-Foil
Anodized aluminium
Epoxy or PPS
Cu / tinned
4 (standard contact S)
0.8 Nm
FHR 4-2321
0.001 to 50 Ohms
ORDERING INFORMATION
Part Number - Resistance - Contact - Tolerance - TCR
FHR 4-2321 0R002 S 1% Q
Document No.: 64246
Revision: 04-10-2018
For technical questions,
contact
powertron@vpgsensors.com
www.powertron.de
1
FHR 4-2321
FIGURE 1—TEMPERATURE COEFFICIENT
2000
0
Limit 2
-2000
∆R/R
(ppm)
-4000
Nominal
∆R/R
-6000
-8000
Limit 1
-10000
-40
-20
0
20
40
60
80
100
120
140
Temperature (°C)
FIGURE 2—DERATING
Power Rating Notes -
120
Power ( % from
nominal power)
100
80
60
40
20
0
25
0.5%
0.2%
0.1%
The FHR 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
50
85
100
115
130
Where:
Temperature of the backplate (°C)
R
qH
= Thermal Resistance of Heatsink ( K/W )
R
qR
= Thermal Resistance of Resistor ( K/W )
T
MAX
= Maximum Temperature of Resistor
T
A
= Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
FIGURE 3—DIMENSIONS
in mm (inches)
Dimension
A
±0.2 (±0.008)
B
±0.2 (±0.008)
C
±0.1 (±0.004)
D
±0.1 (±0.004)
E
±0.2 (±0.008)
F
±0.2 (±0.008)
G
±0.2 (±0.008)
H
±0.2 (±0.008)
I
±0.2 (±0.008)
J
±0.1 (±0.004)
K
±0.1 (±0.004)
L
±0.2 (±0.008)
M
±0.2 (±0.008)
N
±0.1 (±0.004)
O
±0.1 (±0.004)
P
±0.2 (±0.008)
Q
±0.1 (±0.004)
R
±0.2 (±0.008)
17.25 (0.68)
22.30 (0.88)
3.20 (0.13)
Ø
3.20 (
Ø
0.13)
16.75 (0.66)
7.62 (0.30)
17.78 (0.70)
1.50 (0.06)
1.10 (0.04)
2.00 (0.08)
3.00 (0.12)
8.00 (0.31)
3.00 (0.12)
1.50 (0.06)
4.50 (0.18)
3.75 (0.15)
0.80 (0.03)
2.10 (0.08)
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For technical questions,
contact
powertron@vpgsensors.com
Document No.: 64246
Revision: 04-10-2018
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Document No.: 63999
Revision: 15-Jul-2014
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