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USR4-T220B0.324OHMSC1%3PPM [VISHAY]

Fixed Resistor, Metal Foil, 10W, 0.324ohm, 1% +/-Tol, -3,3ppm/Cel, 4016;
USR4-T220B0.324OHMSC1%3PPM
型号： USR4-T220B0.324OHMSC1%3PPM
厂家： VISHAY    VISHAY
描述：

Fixed Resistor, Metal Foil, 10W, 0.324ohm, 1% +/-Tol, -3,3ppm/Cel, 4016
文件： 总4页 (文件大小：912K)
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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
Legal Disclaimer Notice  
Vishay Precision Group  
Disclaimer  
ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.  
Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their  
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  
applications are based on Vishay Precision Group’s knowledge of typical requirements that are often placed on  
Vishay Precision Group products. It is the customer’s responsibility to validate that a particular product with the  
properties described in the product specification is suitable for use in a particular application.  
No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by  
any conduct of Vishay Precision Group.  
The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise  
expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated for use  
in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any  
damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group personnel  
to obtain written terms and conditions regarding products designed for such applications.  
Product names and markings noted herein may be trademarks of their respective owners.  
Document No.: 63999  
Revision: 27-Apr-11  
www.vishaypg.com  
1

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