Metal Glaze

Surface Mount Power Resistors

CHP Series

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

CHP Power Derating Curve

CHP Repetitive Surge Curve

Issue C · 05.03

Welwyn Components

44

120%

100%

80%

60%

40%

20%

0%

30

50

70

90

110

130

150

CHP 1/8, 1/2, 1

CHP 2

1000

100

10

1

0.0001 0.0010 0.0100 0.1000 1.0000

.1msec

1msec

10msec

100msec

10000msec

Surge or pulse duration (seconds)

CHP 2

CHP 1

CHP 1/8

CHP 1/2

Note: Use for repetitive pulses where the average power

dissipation is not to exceed the component rating at 70°C.

Surge handling capacity for low-repetitive surges may be

significantly greater than shown above. Contact factory for

recommendations.

Size Code

Industry

Dimensions (mm)

Footprint

LW

C

CHP1/8

1206

3.25±0.18

1.45±0.15

0.51±0.25

CHP1/2

2010

5.08±0.25

2.01±0.15

0.761±0.25

CHP1

2512

6.38±0.25

2.01±0.15

1.02±0.25

CHP2

3610

9.32±0.25

2.67±0.15

1.27±0.25

Physical Data

L

C

W

CHP_C.qxd

14/5/03

8:16 am

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