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參數(shù)資料
| 型號： | USS4-T220 |
| 廠商： | Willow Technologies Limited |
| 英文描述： | Highest Stability Near Temperature Independent |
| 中文描述： | 最高溫度穩(wěn)定性近獨立 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 107K |
| 代理商： | USS4-T220 |
-600
-400
-200
0
+2,2 ppm/K
200
400
600
Temperature (°C)
d
+5 ppm/K
-5 ppm/K
-1,8 ppm/K
-50
-25
0
25
50
75
100
125
Nominal-dR/R
Nominal-Spread
+/-2,3 ppm/K
Nominal-Spread
+/-2,3 ppm/K
USR UNR 4-T220 4-T220B 4-T221
USS UNS 4-T220
Highest Stability
Near Temperature
Independent
Lowest Tolerances
Low Capacitance and
Inductance
High Power
Available also 2-pin version
SPECIFICATIONS
ELEKTRICAL
USR 4-T220
UNR 4-T220
note
1)
0R2...80R
Resistance range
:
0R2...80R
Nominal power
:
1.5 W (70°C) without heatsink
10 W*
* with heatsink
10.8 K/W
15 W*
Thermal Resistance Rthj-c:
Tolerances
6.8 K/W
:
:
:
:
:
from 0R5
from 10R
from 50R
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%
0.01%
max. ±5 ppm/K (-55...155)°C
typ. ±3 ppm/K (-55...125)°C
upon request ±1 ppm/K (0...60)°C
1 kVDC
< 1 μV/K
Stability
Temperature coefficient :
Voltage Proof
Thermal EMF
:
:
ENVIRONMENTAL
Operating Temperature Range
MECHANICAL
Resistor Material
Substrate
Housing
Connector Material
Max. torque backplate
note
1)
: Specially designed for applications with fast changing electrical load.
:
:
:
:
:
:
-55°C...155°C
NiCr-Foil
Al
O
Epoxy + heatsink Cu nickel plated
Cu, tinned, 4-pin
1.0 Nm
AlN
TEMPERATURE COEFFICIENT
Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK
Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail
sales@willow.co.uk
web
www.willow.co.uk
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