USR4-T2200.542OHMS0.1%1PPM [VISHAY]
Fixed Resistor, Metal Foil, 10W, 0.542ohm, 0.1% +/-Tol, -1,1ppm/Cel, 3918;型号: | USR4-T2200.542OHMS0.1%1PPM |
厂家: | VISHAY |
描述: | Fixed Resistor, Metal Foil, 10W, 0.542ohm, 0.1% +/-Tol, -1,1ppm/Cel, 3918 电阻器 |
文件: | 总4页 (文件大小:912K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
USR UNR USS UNS 4-T220
Powertron
•ꢀ Resistances from 0.2Ohm to 80Ohms
•ꢀ Power Rating to 15Watt
•ꢀ Resistance Tolerances to ±0.01%
•ꢀ TCR to ±1ppm/K
•ꢀ Load Stability to 0.01%
SPECIFICATIONS
Type
USR / USS
UNR /UNS
Resistance Range
0.2 to 80 Ohms
Power rating
free air 70°C
with heatsink
1.5W
10W
1.5W
15W
Thermal Resistance Rthj-c
10.8 K/W
6.8 K/W
Tolerances
from 0.5 Ohms
from 10.0 Ohms
from 50.0 Ohms
0.1% / 0.25% / 0.5% / 1%
0.05% / 0.1% / 0.25% / 0.5% / 1%
0.01% / 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1%
Stability
0.01%
Shelf Life Stability
25ppm / ∆R after 1 year
50ppm / ∆R after 3 year
Temperature Coefficient
max. ±5ppm/K (-55 to 155°C)
typ. ±3ppm/K (-55 to 125°C)
upon request ±1ppm/K (0 to 60°C)
Voltage Proof
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
1 kVDC
< 0.1µV/K
-55 to 155°C
NiCr-Foil
Al2O3
AlN
Housing
Epoxy + Cu heatsink nickel plated
Connector Material
Terminals
Cu tinned
4
Max. Torque
1.0 Nm
Notes
Specially designed for applications with fast
changing electrical load
Ordering Information
Part Number - Resistance - Contact - Tolerance - TCR
UNR 2-T220B 5.7kOhms C 0.5% 3ppm
Document Number: 64225
Revision: 20-09-10
For technical questions, contact: powertron@vishaypg.com
www.powertron.de
1
USR UNR USS UNS 4-T220
Powertron
SPECIFICATIONS (continued)
Temperature Coefficient
1500
1000
500
+5ppm/K
-5ppm/K
0
Nominal Spread
±2.3ppm/K
-500
-1000
-1500
Nominal DR/R
Nominal Spread
±2.3ppm/K
100
0
50
75
125
-50
-25
25
Temperature (°C)
Derating
Power Rating Notes -
The U-Series Resistors must be attached to a suitable heatsink.
The maximum internal resistor temperature is 155°C.
To specify an appropriate heatsink use the following formula :
120
100
80
60
40
20
0
RqH = TMAX - ( P x RqR ) - TA
P
Where: RqH = Thermal Resistance of Heatsink ( K/W )
RqR = Thermal Resistance of Resistor ( K/W )
TMAX = Maximum Temperature of Resistor
TA = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
25
50
85 100 115 130 145 155
Temperature of the backplate(°C)
Dimensions
USS 4-T220 / UNS 4-T220
tol.
tol.
Dimension
mm
12.70
10.16
0.76
(±mm)
inches
0.50
0.40
0.03
0.10
0.30
0.16
0.05
0.57
0.59
0.68
0.02
0.07
(±inches)
A
B
C
D
E
F
G
H
I
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.2
0.1
0.1
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.008
0.008
0.008
0.004
0.004
2.54
7.62
4.00
1.20
14.60
15.00
17.33
0.40
J
K
L
1.85
Dimension
mm
inches
A
B
C
D
E
F
12.10
11.16
18.33
7.62
0.476
0.439
0.722
0.300
0.100
0.069
0.126
2.54
1.76
G
3.20
www.powertron.de
2
For technical questions, contact: powertron@vishaypg.com
Document Number: 64225
Revision: 20-09-10
USR UNR USS UNS 4-T220
Powertron
SPECIFICATIONS (continued)
Dimensions
USR 4-T220B / UNR 4-T220B
tol.
tol.
Dimension
mm
17.30
10.16
6.00
Ø3.7
16.40
7.62
2.54
1.30
0.76
1.03
10.00
13.80
2.00
1.20
4.00
2.90
0.40
1.85
(±mm)
inches
0.68
0.40
0.24
Ø0.146
0.65
0.30
0.10
0.05
0.03
0.04
0.39
0.54
0.08
0.05
0.16
0.11
(±inches)
A
0.2
0.2
0.1
0.1
0.2
0.2
0.1
0.1
0.1
0.1
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.008
0.008
0.004
0.004
0.008
0.008
0.004
0.004
0.004
0.004
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.004
B
C
D
E
F
G
H
I
J
K
K (C-Contact)
L
M
N
O
P
0.02
0.07
Q
USR 4-T220 / UNR 4-T220
tol.
tol.
Dimension
mm
15.30
10.00
2.80
Ø3.7
2.54
7.62
1.27
4.60
6.00
35.30
Ø0.6
2.41
(±mm)
inches
0.60
(±inches)
A
B
C
D
E
F
G
H
I
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.2
2.0
0.1
0.1
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.004
0.008
0.079
0.004
0.004
0.39
0.11
Ø0.146
0.10
0.30
0.05
0.18
0.24
J
1.39
K
L
Ø0.02
0.09
Document Number: 64225
Revision: 20-09-10
For technical questions, contact: powertron@vishaypg.com
www.powertron.de
3
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Vishay Precision Group
Disclaimer
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incompleteness contained herein or in any other disclosure relating to any product.
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purchase, including but not limited to, the warranty expressed therein.
Vishay Precision Group 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, Vishay Precision Group
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
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Document No.: 63999
Revision: 27-Apr-11
www.vishaypg.com
1
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