T48D WELWYN [Welwyn Components Limited], T48D Datasheet
T48D
Manufacturer Part Number
T48D
Description
High Voltage Precision Thick Film Resistors
Manufacturer
WELWYN [Welwyn Components Limited]
Datasheet
1.T48D.pdf
(2 pages)
High Voltage Precision
Thick Film Resistors
T Series
•
•
•
•
•
Electrical Data
Physical Data
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
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Power rating at 20°C
Resistance range
Limiting element voltage
TCR
Resistance tolerance
Values
Thermal impedance
Ambient temperature range
Dimensions (mm) & Weight (g)
Type
T43D
T44D
T48D
T43KU
T44KU
T48KU
T43TU
T44TU
T48TU
Working voltage up to 100kV
Resistances up to 50G
TCR down to 25ppm
Termination variants
Sets of resistors with matched characteristics
L max
150.0
152.2
154.8
25.4
50.8
30.2
53.2
32.6
55.6
D max
8.4
8.4
8.4
8.5
8.5
8.5
8.5
8.5
8.5
f min
32.0
32.0
32.0
32.0
32.0
32.0
· Bedlington, Northumberland NE22 7AA, UK
d nom
0.8
0.8
0.8
0.8
0.8
0.8
ppm/°C
°C/watt
watts
ohms
volts
mounting
centres
°C
%
156.4
31.8
57.2
PCB
1K to 10G
Radius
T43
1.5
Bend
4K
8K
31
Min
1.2
1.2
1.2
E24 preferred values
Wt. nom
18.5
19.3
20.2
3.1
5.6
3.9
7.4
5.8
8.2
25, 50, 100
-55 to 150
1K to 50G
1, 2, 5
T44
14K
28K
3.5
27
1K to 50G
100K
d
50K
T48
10
13
T44TU
L
D
Welwyn Components
Closer tolerances over restricted range
Values > 1G: TCR is 250ppm/°C
T44D
Any value to special order
L
T44KU
L
Notes
In air
In oil
f
TT electronics plc
A subsidiary of
Issue B · 03.02
193
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T48D Summary of contents
Page 1
... Electrical Data Power rating at 20°C Resistance range Limiting element voltage TCR Resistance tolerance Values Thermal impedance Ambient temperature range Physical Data Dimensions (mm) & Weight (g) Type L max D max f min d nom T43D 25.4 8.4 32.0 0.8 T44D 50.8 8.4 32.0 0.8 T48D 150.0 8.4 32.0 0.8 T43KU 30.2 8.5 32.0 0.8 T44KU 53.2 8.5 32.0 0.8 T48KU 152.2 8.5 32.0 0.8 T43TU 32.6 8.5 T44TU 55.6 8.5 T48TU 154 ...
Page 2
High Voltage Precision Thick Film Resistors T Series Construction A ruthenium oxide based resistive film is fired onto the surface of a high quality former. Turned brass end caps are fitted. A Helical cut is made into the film to ...