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)
www.powertron.de
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For technical questions,
contact
powertron@vpgsensors.com
Document No.: 64246
Revision: 04-10-2018
Legal Disclaimer Notice
Vishay Precision Group, Inc.
Disclaimer
ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.
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any other disclosure relating to any product.
The product specifications do not expand or otherwise modify VPG’s terms and conditions of purchase, including but
not limited to, the warranty expressed therein.
VPG makes no warranty, representation or guarantee other than as set forth in the terms and conditions of purchase.
To the maximum extent permitted by applicable law, VPG disclaims (i) any and all liability arising out of the
application or use of any product, (ii) any and all liability, including without limitation special, consequential or
incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose,
non-infringement and merchantability.
Information provided in datasheets and/or specifications may vary from actual results in different applications and
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Copyright Vishay Precision Group, Inc., 2014. All rights reserved.
Document No.: 63999
Revision: 15-Jul-2014
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