HVL Datasheet, PDF (1/2 Pages) Welwyn Components Limited – High Voltage Low Inductance Thick film Resistors

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
Power rating at 70°C
Resistance range
Limiting element voltage
TCR (20°C to 70°C)
Resistance tolerance
Values
Thermal impedance
Ambient temperature range
watts
ohms
volts
ppm/°C
%
°C/watt
HVL 43
HVL 44
HVL 45
1.5
3.5
5.0
1K to 1G
1K to 2G
1K to 4G
4K
14K
24K
8K
28K
48K
25, 50, 100
1, 2, 5
E24 preferred values
31
27
20
-55 to 155
Notes
In air
In oil
Values >1G: TCR is 250ppm/°C
Closer tolerances over restricted range
Any value to special order
Physical Data
Dimensions (mm) and Weight (g)
Type
HVL 43
HVL 44
HVL 45
L max.
25.4
50.8
84.2
D max.
8.0
8.0
8.0
f min.
30
30
30
d nom.
PCB
mounting
centres
0.8
31.8
0.8
57.2
0.8
87.2
Min.
bend
radius
1.2
1.2
1.2
Wt.
nom.
3.1
5.6
5.6
d
D
L
f
Construction
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.
Terminations
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.
Marking
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
industrial cleaning solvents suitable for printed circuits.
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.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
A subsidiary of
TT electronics plc
Issue B · 03.02
197