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UNS4-T220 参数 Datasheet PDF下载

UNS4-T220图片预览
型号: UNS4-T220
PDF下载: 下载PDF文件 查看货源
内容描述: 稳定性最高温度接近独立 [Highest Stability Near Temperature Independent]
分类和应用:
文件页数/大小: 2 页 / 103 K
品牌: WILLOW [ WILLOW TECHNOLOGIES LTD ]
 浏览型号UNS4-T220的Datasheet PDF文件第2页  
USR UNR 4-T220 4-T220B 4-T221
USS UNS 4-T220
Near Temperature
Independent
Lowest Tolerances
Low Capacitance and
Inductance
High Power
Available also 2-pin version
SPECIFICATIONS
ELEKTRICAL
Resistance range
Nominal power
:
:
Highest Stability
USR 4-T220
0R2...80R
UNR 4-T220
note
1)
0R2...80R
Thermal Resistance Rthj-c :
Tolerances
:
from 0R5
:
from 10R
:
from 50R
:
Stability
:
Temperature coefficient :
1.5 W (70°C) without heatsink
10 W*
15 W*
* with heatsink
10.8 K/W
6.8 K/W
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
Voltage Proof
Thermal EMF
:
:
ENVIRONMENTAL
Operating Temperature Range :
-55°C...155°C
MECHANICAL
Resistor Material
:
NiCr-Foil
AlN
Substrate
:
Al
2
O
3
Housing
:
Epoxy + heatsink Cu nickel plated
Connector Material
:
Cu, tinned, 4-pin
Max. torque backplate
:
1.0 Nm
1)
note : Specially designed for applications with fast changing electrical load.
TEMPERATURE COEFFICIENT
600
dR/R (ppm )
400
-5 ppm/K
200
0
+2,2 ppm/K
-200
-400
-600
-50
-25
0
25
50
Tem perature (°C)
75
100
125
+5 ppm/K
-1,8
No minal-Spread
ppm/K
+/-2,3 ppm/K
No minal-dR/R
No minal-Spread
+/-2,3 ppm/K
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