SHR 4-2321
FIGURE 1—TEMPERATURE COEFFICIENT
2000
+10 ppm/K
1000
+5 ppm/K
∆R/R
(ppm)
0
Nominal
∆R/R
-5 ppm/K
-1000
-10 ppm/K
-2000
-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 SHR 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)
www.powertron.de
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For technical questions,
contact
powertron@vpgsensors.com
Document No.: 64249
Revision: 31-01-2015
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Vishay Precision Group, Inc.
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Copyright Vishay Precision Group, Inc., 2014. All rights reserved.
Document No.: 63999
Revision: 15-Jul-2014
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