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

High Voltage
Thick film Resistors
HV Series
• ^{Resistance up to 250M}
• ^{Low temperature coefficient of resistance}
• ^{Working voltage up to 20kV}
• ^{Sets of resistors with matched characteristics}
Welwyn Components
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
Physical Data
watts
ohms
volts
ppm/°C
%
°C/watt
°C
HV31
HV32
HV33
HV34
HV35
Notes
0.5
0.75
1.0
1.25
1.5
1K to 50M 1K to 100M 1K to 150M 1K to 200M 1K to 250M
1K
2K
4K
7K
10K
In air
2K
4K
8K
14K
20K
In oil
50, 100
1, 2, 5
E24 preferred
Any value to
special order
75
70
60
65
60
-55 to 155
Dimensions (mm) & Weight (g)
Type
HV31
HV32
HV33
HV34
HV35
L max
10.0
19.0
15.5
38.0
50.8
D max
3.5
3.6
5.3
3.6
3.6
f min
30.0
30.0
30.0
30.0
30.0
d nom
0.6
0.6
0.8
0.6
0.6
PCB
mounting
centres
12.7
25.4
18.4
44.4
57.2
Min.
Bend
Radius
0.6
0.6
1.2
0.6
0.6
Wt. nom
0.5
0.6
1.2
1.1
1.25
d
D
L
f
Construction
A ruthenium oxide based resistive film is fired onto a high
quality ceramic former. Brass caps are force fitted to the
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.
Marking
Type reference, resistance value, tolerance and date code are
legend marked. The resistance values conform to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
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
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
195