Aluminium Housed

Wirewound Resistors

Physical Data

Dimensions (mm) & Weight (g)

WH5 - 50

A

B

C

E

F

G

H

L

M

N

Dt

Wt.

Type

Max

±0.3

±0.3

Min

Max

Max

Dia ±0.2

Max

±0.5

Max

Min

Nom

WH5

30

12.4

11.3

1.9

17

9

2.4

17.0

4.3

1.8

2.5

3.6

WH10

36.5

15.9

14.3

1.9

21

11

2.4

21.0

5.2

2.2

2.9

5.6

WH25

51

19.8

18.3

2.8

28

15

3.3

29.0

7.2

2.6

4.3

13

WH50

72.5

21.4

39.7

2.8

30

16

3.3

51.0

7.9

2.6

5.1

29

WH100 – 300

A

Max

B

Max

C

Max

D

Max

E

Max

F

±0.3

G

±0.3

H

Max

J

Max

K

Max

L

Nom*

M

Max

Dt

Min

Wt.

Nom

WH100

47.5

88

24.1

27.3

65.2

35

37

11.8

15.4

3.7

4.4

-

7.0

115

WH200

72.5

145.7

41.8

45.5

89.7

70

57.2

20.5

10.4

5.5

5.1

103.4

15

475

WH300

72.5

184.4

41.8

45.5

127.7

104

59

20.5

12.4

5.5

6.6

141.4

15

700

* WH100: ±0.25, WH200 & WH300: ±0.45

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 test data and is considered accurate at time of print.

©Welwyn Components Limited

Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com

Construction

Cap and lead assemblies are fitted to a high purity

ceramic substrate. The resistive element is wound onto

the substrate and welded to the caps. The wound rod is

then moulded and fitted into aluminium housing to give

optimum stability and reliability.

Marking

The resistors are legend marked with type reference,

resistance value and tolerance which will withstand all

accepted industrial cleaning fluids. Values are marked

in accordance with IEC 62

End face tracking distance = Dt

WH100

WH200 & 300

WH5 - 50