High Voltage Low Inductance

Thick film Resistors

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

HVL 43

HVL 44

HVL 45

Notes

Power rating at 70°C

watts

1.5

3.5

5.0

Resistance range

ohms

1K to 1G

1K to 2G

1K to 4G

Limiting element voltage

volts

4K

14K

24K

In air

8K

28K

48K

In oil

TCR (20°C to 70°C)

ppm/°C

25, 50, 100

Values >1G: TCR is 250ppm/°C

Resistance tolerance

%

1, 2, 5

Closer tolerances over restricted range

Values

E24 preferred values

Any value to special order

Thermal impedance

°C/watt

31

27

20

Ambient temperature range

-55 to 155

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: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

Electrical Data

Issue B · 03.02

A subsidiary of

TT electronics plc

Welwyn Components

197

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.

Dimensions (mm) and Weight (g)

PCB

Min.

mounting

bend

Wt.

Type

L max.

D max.

f min.

d nom.

centres

radius

nom.

HVL 43

25.4

8.0

30

0.8

31.8

1.2

3.1

HVL 44

50.8

8.0

30

0.8

57.2

1.2

5.6

HVL 45

84.2

8.0

30

0.8

87.2

1.2

5.6

Physical Data

L

D

f

d

OBSOLETE