USR2-T22112.6OHMS0.25%3PPM [VISHAY]
Fixed Resistor, Metal Foil, 15W, 12.6ohm, 1000V, 0.25% +/-Tol, -3,3ppm/Cel, 4016;型号: | USR2-T22112.6OHMS0.25%3PPM |
厂家: | VISHAY |
描述: | Fixed Resistor, Metal Foil, 15W, 12.6ohm, 1000V, 0.25% +/-Tol, -3,3ppm/Cel, 4016 电阻器 |
文件: | 总4页 (文件大小:887K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
USR UNR USS UNS T220 T221
Powertron
•ꢀ Resistances from 0.5Ohm to 150kOhms
•ꢀ Power Rating to 10Watt
•ꢀ Resistance Tolerances to ±0.01%
•ꢀ TCR to ±3ppm/K
•ꢀ Load Stability to 0.01%
•ꢀ TO-220 Housing
•ꢀ Convenient SMD D2Pak Available
SPECIFICATIONS
Type
USR / USS
UNR /UNS
Resistance Range
0.5 Ohms to 150 kOhms
0.5 Ohms to 5 kOhms
Power rating
free air 70°C (R<50R0)
1.5W
1.0W
10W
6W
1.5W
1.0W
15W
10W
free air 70°C (R>50R0)
with heatsink (R<50R0)
with heatsink (R>50R0)
Thermal Resistance Rthj-c
R<50R0
10.8 K/W
18.8 K/W
6.8 K/W
10.8 K/W
R>50R0
Tolerances
from 0.5 Ohms
from 10.0 Ohms
from 25.0 Ohms
from 50.0 Ohms
0.1% / 0.25% / 0.5% / 1%
0.05% / 0.1% / 0.25% / 0.5% / 1%
0.02% / 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)
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
2
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: 64222
Revision: 20-09-10
For technical questions, contact: powertron@vishaypg.com
www.powertron.de
1
USR UNR USS UNS T220 T221
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 heat-
sink. 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 2-T220 / UNS 2-T220
tol.
tol.
Dimension
mm
12.70
10.16
0.76
(±mm)
0.2
0.2
0.1
0.1
0.1
0.1
0.2
0.2
0.2
0.1
0.1
inches
0.50
0.40
0.03
0.20
0.16
0.05
0.57
0.59
0.68
0.02
0.07
(±inches)
Dimension
mm
12.10
11.16
18.33
5.08
inches
0.476
0.439
0.722
0.200
0.069
0.126
A
B
C
D
E
F
G
H
I
0.008
0.008
0.004
0.004
0.004
0.004
0.008
0.008
0.008
0.004
0.004
A
B
C
D
E
F
5.08
4.00
1.76
1.20
3.20
14.60
15.00
17.33
0.40
J
K
1.85
www.powertron.de
2
For technical questions, contact: powertron@vishaypg.com
Document Number: 64222
Revision: 20-09-10
USR UNR USS UNS T220 T221
Powertron
SPECIFICATIONS (continued)
Dimensions
tol.
tol.
Dimension
mm
17.30
10.16
6.00
Ø3.7
16.40
5.08
0.76
1.30
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
0.20
0.03
0.05
0.39
0.54
0.08
0.05
0.16
0.11
(±inches)
A
0.2
0.2
0.1
0.1
0.2
0.1
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
0.004
0.004
0.004
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.004
USR 2-T220B / UNR 2-T220B
B
C
D
E
F
G
H
I
I (C-Contact)
J
K
L
M
N
O
0.02
0.07
tol.
(±mm)
tol.
(±inches)
USR 2-T221 / UNR 2-T221
Dimension
mm
18.30
10.16
3.70
Ø3.2
16.40
5.08
0.76
1.30
10.00
13.80
2.00
1.20
4.00
3.90
0.40
1.85
inches
0.72
0.40
0.15
Ø0.126
0.65
0.20
0.03
0.05
0.39
0.54
0.08
0.05
0.16
0.15
0.02
0.07
A
0.2
0.2
0.1
0.1
0.2
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
0.004
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
I (C-Contact)
J
K
L
M
N
O
USR 2-T220 / UNR 2-T220
tol.
(±mm)
tol.
(±inches)
Dimension
mm
15.30
10.00
2.80
Ø3.7
2.00
5.08
1.27
4.60
6.00
35.30
Ø0.6
2.41
inches
0.60
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
0.08
0.20
0.05
0.18
0.24
J
1.39
K
L
Ø0.02
0.09
Document Number: 64222
Revision: 20-09-10
For technical questions, contact: powertron@vishaypg.com
www.powertron.de
3
Legal Disclaimer Notice
Vishay Precision Group
Disclaimer
ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.
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behalf (collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or
incompleteness contained herein or in any other disclosure relating to any product.
The product specifications do not expand or otherwise modify Vishay Precision Group’s terms and conditions of
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
and performance may vary over time. Statements regarding the suitability of products for certain types of
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Document No.: 63999
Revision: 27-Apr-11
www.vishaypg.com
1
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