HV35 [TTELEC]
High Voltage Thick film Resistors; 高压厚膜电阻
| 型号： | HV35 |
| 厂家： | 
TT Electronics |
| 描述： | High Voltage Thick film Resistors |
| 文件： | 总2页 (文件大小：114K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Voltage
Thick film Resistors
Welwyn Components
HV Series
Resistance up to 250M
•
Low temperature coefficient of resistance
•
Working voltage up to 20kV
•
Sets of resistors with matched characteristics
•
Electrical Data
HV31
HV32
HV33
HV34
HV35
Notes
Power rating at 70°C
Resistance range
watts
0.5
0.75
1.0
1.25
1.5
ohms 1K to 50M 1K to 100M 1K to 150M 1K to 200M 1K to 250M
Limiting element voltage
volts
1K
2K
2K
4K
4K
8K
7K
10K
20K
In air
In oil
14K
TCR (20°C to 70°C)
Resistance tolerance
Values
ppm/°C
%
50, 100
1, 2, 5
E24 preferred
Any value to
special order
Thermal impedance
°C/watt
°C
75
70
60
65
60
Ambient temperature range
-55 to 155
Physical Data
Dimensions (mm) & Weight (g)
PCB
Min.
mounting
centres
Bend
Type
L max
10.0
19.0
15.5
38.0
50.8
D max
3.5
f min
30.0
30.0
30.0
30.0
30.0
d nom
0.6
Radius Wt. nom
HV31
HV32
HV33
HV34
HV35
12.7
25.4
18.4
44.4
57.2
0.6
0.6
1.2
0.6
0.6
0.5
0.6
d
D
3.6
0.6
L
f
5.3
0.8
1.2
3.6
0.6
1.1
3.6
0.6
1.25
Construction
A ruthenium oxide based resistive film is fired onto a high
Solvent Resistance
The body protection and marking are resistant to all normal
quality ceramic former. Brass caps are force fitted to the
industrial cleaning solvents suitable for printed circuits.
HV32, 34 and 35 rods and plated steel caps to the 31 and 33
sizes. The resistor is adjusted to value by a helical cut in the
film, and the body is protected with a silicone coating.
Terminations
Material
Solder coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21.
Marking
Type reference, resistance value, tolerance and date code are
Solderability The terminations meet the requirements of
legend marked. The resistance values conform to IEC 62.
IEC 115.1, Clause 4.17.3.2
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
195
High Voltage
Thick film Resistors
HV Series
Welwyn Components
Performance Data
Maximum
Typical
0.3
Load at rated power: 1000 hours at 70°C
Shelf life: 12 months at room temperature
Derating from rated power at 70°C
Noise (in a decade of frequency)
∆R%
∆R%
1
0.3
0.1
Zero at 155°C
µV/V
5
5
<2.5
<2
Voltage coefficient of resistance
ppm/volt
Matched Sets
Resistors in a set can be supplied for use as precision voltage
dividers matched for tolerance and TCR down to 0.5% and
10ppm/°C.
ENQUIRIES ARE WELCOMED FOR SPECIAL RESISTORS AND
SETS
Application Notes
Mounting
Packaging
Due to the high voltage which can appear between the end
cap and any adjacent metal part, resistors should be mounted
at an adequate distance from other conductors.
Resistors are supplied packed in boxes.
Standard Quantities Per Box
All Types
10 or 20 per box
For some high voltage applications it is required to immerse
the components in oil or gas to reduce the effects of corona
and surface tracking. The protective coating is suitable for
these applications.
The axial termination should not be bent closer than twice
the diameter of the terminal wire from the body of the
resistor.
When the resistors are required to be potted, the preferred
encapsulant is a silicone compound.
For voltage dividers with a low resistance section below the
minimum available value of 1k ohms, it is normal practice to
use a Welwyn resistor, RC Series, obtainable down to 1ohm.
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
196
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