UPW15 [TE]
Ultra Precision Wire-Wound Resistors; 超精密线绕电阻器
| 型号： | UPW15 |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Ultra Precision Wire-Wound Resistors |
| 文件： | 总2页 (文件大小：371K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ultra Precision Wire-Wound Resistors
Type UPW Series
Characteristics -
Electrical
Type UPW Series
UPW15
UPW25
UPW30
UPW50
Rated Power @ 125°C (W)
Derate to zero at 145°C
0.125
0.25
0.3
0.5
Resistance Range (Ohms) Min
Max
R10
300K
R10
1M0
R10
1M0
R10
2M0
Tolerance (%)
0.005 0.01 0.02 0.05 0.1 0.2 0.5 1
Code Letter
E
L
P
W
B
A
D
F
Limiting Element Voltage (V)
Temperature Coefficient (ppm/°C) Typ.
Max.
Operating Temperature Range (°C)
Long Term Stability (Load)
150
300
150
400
3 (0°C to +85°C)
The resistive element is wire wound
5 (-55°C to +125°C) 1 available on request
-55 to +145
onto
a
moulded high temperature
plastic bobbin with a central former.
The direction of winding is reversed
part way through the winding, giving
very low values of inductance.
< 50 ppm @ 10,000 hrs
< 100ppm @ 26,000 hrs
< 0.2 µ V /°C
Thermal EMF
These Neohm resistors use bobbin
assemblies with flattened lead ends,
providing high resistance to pull,
vibration and torsional forces during
handling, assembly and life.
Dimensions
Style A
Style B
Key Features
ꢀ
Custom weld tabs and copper
weld leads ensure a good
mechanical and electrical
connection between the
element and the lead wires.
Protection is given to the
windings by means of a layer
of silicone RTV rubber. This
allows movement of the
windings during temperature
cycling due to loads and
to varying ambient
Type
Style
L
0.4
6.35
D
0.4
3.18
W
0.5
s
0.2
d nom
0.64
0.64
0.64
0.81
UPW15
UPW25
UPW30
UPW50
A
A
B
A
-
-
-
9.53
7.62
12.7
4.75
7.62
6.35
-
3.81
-
3.18
-
Derating Curve
temperatures. Outer protec-
tion is given by means of a
hot transfer moulded epoxy
compound which ensures an
airtight coating with no
trapped air.
100
80
1%, 0.5%, 0.2%, 0.1%
0.05%
60
40
20
0
0.02%
0.01%
ꢀ
Superior quality wire-wound
resistors with very low
selection tolerances and
temperature coefficients
down to 1 ppm. 3 case sizes
are available. T/C, ratio and
pair matching is available
and customer specifications
are welcome. These compo-
nents exhibit high stability
under load and severe
0.005%
40
60
80
100
120
140
160
Ambient Temperature (°C)
UPW Series resistors must be derated for tolerances below 0.1%. Use the graph to select tolerance versus operating
temperature to determine the percentage rated power for operation.
No derating is required for operation below 20 °C.
environmental conditions.
Mounting
The resistors are suitable for processing on automatic insertion equipment and cutting and bending machines.
Literature No. 1773299
Issued: 04-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres Specifications subject to
unless otherwise specified.
www.tycoelectronics.com
passives.tycoelectronics.com
change.
Ultra Precision Wire-Wound Resistors
Type UPW Series
Marking
The resistors are marked with the following information:- Manufacturer's name, type number, value and tolerance,
four figure date code.
Packaging
UPW Series resistors are packed loose in boxes.
Performance Characteristics
The evaluation of the performance characteristics is carried out with reference to
IEC specifications QC 400 000 and QC 400 100.
TEST REF
4.23
Long Term Tests (0.25% ꢀ 0.05 ohm)
Climatic sequence
4.24
Damp heat, steady state
Endurance at 70 °C
4.25.1
4.25.3
TEST REF
4.13
Endurance at 145 °C
Short Term Tests (0.1% ꢀ 0.01 ohm)
Overload
4.16
Robustness of terminations
Resistance to soldering heat
Rapid change of temperature
Vibration
4.18
4.19
4.22
All resistance values are measured at a distance of 9.53mm (0.375 inch) from
the end cap.
How to Order
Orders for these components should include the following information:-
Type, tolerance code letter and value e.g. UPW30 L 1K15
Literature No. 1773299
Issued: 04-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres Specifications subject to
unless otherwise specified.
www.tycoelectronics.com
passives.tycoelectronics.com
change.
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