High Voltage

Thick film Resistors

HV Series

HV31

HV32

HV33

HV34

HV35

Notes

Power rating at 70°C

watts

0.5

0.75

1.0

1.25

1.5

Resistance range

ohms

1K to 50M

1K to 100M 1K to 150M 1K to 200M 1K to 250M

Limiting element voltage

volts

1K

2K

4K

7K

10K

In air

2K

4K

8K

14K

20K

In oil

TCR (20°C to 70°C)

ppm/°C

50, 100

Resistance tolerance

%

1, 2, 5

Values

E24 preferred

Any value to

special order

Thermal impedance

°C/watt

75

70

60

65

60

Ambient temperature range

°C

-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.

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

195

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

Dimensions (mm) & Weight (g)

PCB

Min.

mounting

Bend

Type

L max

D max

f min

d nom

centres

Radius

Wt. nom

HV31

10.0

3.5

30.0

0.6

12.7

0.6

0.5

HV32

19.0

3.6

30.0

0.6

25.4

0.6

0.6

HV33

15.5

5.3

30.0

0.8

18.4

1.2

1.2

HV34

38.0

3.6

30.0

0.6

44.4

0.6

1.1

HV35

50.8

3.6

30.0

0.6

57.2

0.6

1.25

Physical Data

L

D

f

d