December 1994

5

Philips Semiconductors

Product specification

NPN silicon planar epitaxial

microwave power transistor

LFE18500X

Fig.3 Prematching test circuit board.

The test circuit is split into two independent halves, each being 30 x 40 mm in size.

Dimensions in mm.

Substrate: Epsilam 10.

Thickness: 0.635 mm.

Permittivity:

ε

handbook, full pagewidth

MLC434

30

40

30

40

5.0

7.0

7.0

2.0

2.0

4.0

3.5

4.0

3.0

2.0

3.0

2.0

0.695

0.695

15.2

1.0

1.0

5.2

6.0

2.0

1.5

1.5

4.0

2.0

VBB

VCC

C5

C6

L1

L2

C2

C3

C4

C7

C1

output

input

F1