High Voltage
Thick Film Resistors
F Series
Welwyn Components
•
•
•
•
•
Working voltage up to 28kV
Resistance up to 150G
Termination variants
Sets supplied with matched characteristics
Good ratio matching over wide voltage range
Electrical Data
F43
Power rating
Resistance range
Limiting element voltage
TCR 20° - 70°C
Resistance tolerance
Standard values
Thermal impedance
Ambient temperature range
°C/watt
°C
44
-55 to 100
watts
ohms
volts
volts
ppm/°C
%
0.7
2M to 100G
4K
8K
-2000
2, 5, 10
E24 preferred
33
Measured at 100 volts dc
Any value to special order
F44
1.3
2M to 150G
14K
28K
In air
In oil
Notes
Physical Data
Dimensions (mm) & Weight (g)
PCB
mounting
Type
F43D
F44D
F43KU
F44KU
F43TU
F44TU
L max
25.4
50.8
30.2
53.2
32.6
55.6
D max
8.4
8.4
8.5
8.5
8.5
8.5
f min
32.0
32.0
32.0
32.0
d nom
0.8
0.8
0.8
0.8
centres
31.8
57.2
Min.
Bend
Radius Wt. nom
1.2
1.2
3.1
5.6
3.9
7.4
5.8
8.2
L
L
F44TU
F44KU
d
D
F44D
L
f
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
Issue B · 03.02
© 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
201
WELWYN [ WELWYN COMPONENTS LIMITED ]
