USR4-4020 [TELEDYNE]
Highest Stability Nearly Temperature Independent; 稳定性最高温度几乎无关
| 型号： | USR4-4020 |
| 厂家： | 
TELEDYNE TECHNOLOGIES INCORPORATED |
| 描述： | Highest Stability Nearly Temperature Independent |
| 文件： | 总2页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
USR UNR 4-4020
• Highest Stability
• Nearly Temperature
Independent
• Minimum Tolerance
• Low Capacity and
Inductance
• Customized Resistor Values
SPECIFICATIONS
ELEKTRICAL
USR 4-4020
UNR 4-4020
note1)
Resistance Range
:
:
0R05 ... 500R
0R05 ... 500R
other resistance values upon request /
power rating depending on resistor value
2.5 W (70°C) without heatsink
Power Rating
30 W*
50 W*
* with heatsink
Thermal Resistance Rthj-c :
3.6 K/W
2.2 K/W
Tolerances
from 0R05
:
:
:
:
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%
from 10R
from 50R
Stability
:
0.01%
Temperature Coefficient :
max. ±5 ppm/K (-55...155)°C
typ. ±3 ppm/K (-55...125)°C
upon request ±1 ppm/K (0...60)°C
Voltage Proof
Max. Current
:
:
750 VDC
15 A
15 A
Thermal EMF
:
<1 µV/K
ENVIRONMENTAL
Operating Temperature Range
:
-55°C...155°C
MECHANICAL Resistor Material
Substrate
:
:
:
:
:
NiCr-Foil
Al2O3
Epoxy + Al-heatsink
Cu, tinned, 4-pin
1.0 Nm
AlN
Housing
Connector Material
Max. torque backplate
note1): Specially designed for applications with fast changing electrical load.
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
USR UNR 4-4020
TEMPERATURE COEFFICIENT
600
+5 ppm/K
400
-5 ppm/K
200
Nominal-Spread
+/-2,3 ppm/K
0
+2,2 ppm/K
-200
-1,8 ppm/K
Nominal-dR/R
-400
-600
Nominal-Spread
+/-2,3 ppm/K
100
0
25
50
75
125
-50
-25
Temperature (°C)
DERATING CURVE
120
100
80
60
40
20
0
25
50
85
100
115
130
145
155
Temperature of the backplate (°C)
DIMENSIONS
from R ≤ 0R1 leads with d=0.8mm
Dimensions in mm
HOW TO ORDER
USR 4-4020 0R3 D 0.25% TK3
UNR 4-4020 50R D 0.01% TK1
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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