HVL44 [TTELEC]
High Voltage Low Inductance Thick film Resistors; 高电压低电感厚膜电阻
| 型号： | HVL44 |
| 厂家： | 
TT Electronics |
| 描述： | High Voltage Low Inductance Thick film Resistors |
| 文件： | 总2页 (文件大小：107K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Voltage Low Inductance
Thick film Resistors
Welwyn Components
HVL Series
Working voltage up to 48kV
•
Low inductance
•
Resistance up to 4G
•
Low temperature coefficient of resistance
•
Low voltage coefficient
•
Sets of resistors with matched characteristics
•
Electrical Data
HVL 43
1.5
HVL 44
3.5
HVL 45
5.0
Notes
Power rating at 70°C
Resistance range
watts
ohms
volts
1K to 1G
4K
1K to 2G
14K
1K to 4G
24K
Limiting element voltage
In air
8K
28K
48K
In oil
TCR (20°C to 70°C)
Resistance tolerance
Values
ppm/°C
%
25, 50, 100
1, 2, 5
Values >1G: TCR is 250ppm/°C
Closer tolerances over restricted range
Any value to special order
E24 preferred values
27
Thermal impedance
Ambient temperature range
°C/watt
31
20
-55 to 155
Physical Data
Dimensions (mm) and Weight (g)
PCB
Min.
bend
radius
mounting
Wt.
Type
L max.
25.4
D max.
8.0
f min.
30
d nom. centres
nom.
d
D
HVL 43
HVL 44
HVL 45
0.8
0.8
0.8
31.8
57.2
87.2
1.2
1.2
1.2
3.1
5.6
5.6
L
f
50.8
8.0
30
84.2
8.0
30
Construction
Marking
A ruthenium oxide based resistive film is fired onto a high
quality ceramic former. Cap and lead assemblies are force
fitted to the former. The resistor is adjusted to value and the
body is protected with a silicone coating.
Type reference, resistance value, tolerance and date code are
legend marked. The resistance value conforms to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
Terminations
industrial cleaning solvents suitable for printed circuits.
Material
Solder coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21.
Solderability The terminations meet the requirements of
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
197
High Voltage Low Inductance
Thick film Resistors
HVL 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
<1
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 plotted, 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
198
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