September 1992

12

Philips Semiconductors

Product specification

HF/VHF power MOS transistor

BLF175

List of components (class-AB test circuit)

Notes

1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.

2. The striplines are on a double copper-clad printed circuit board, with PTFE fibre-glass dielectric (

thickness 1.6 mm.

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE NO.

C1, C10

multilayer ceramic chip capacitor

(note 1)

62 pF

C2, C4, C8, C11

film dielectric trimmer

5 to 60 pF

2222 809 07011

C3

multilayer ceramic chip capacitor

(note 1)

51 pF

C5, C6, C9

multilayer ceramic chip capacitor

100 nF

2222 852 47104

C7

multilayer ceramic chip capacitor

(note 1)

10 pF

C12

aluminium electrolytic capacitor

10

µF, 63 V

2222 030 28109

L1

9 turns enamelled 1 mm copper wire 280 nH

length 11 mm;

int. dia. 6 mm;

leads 2 x 4 mm

L2, L3

stripline (note 2)

30

Ω

length 10 mm;

width 6 mm

L4

14 turns enamelled 1 mm copper

wire

1650 nH

length 20 mm;

int. dia. 12 mm;

leads 2 x 2 mm

L5

10 turns enamelled 1 mm copper

wire

380 nH

length 13 mm;

int. dia. 7 mm;

leads 2 x 3 mm

L6

grade 3B Ferroxcube wideband RF

choke

4312 020 36640

R1

0.4 W metal film resistor

22

Ω

R2

0.4 W metal film resistor

1 M

Ω

R3

0.4 W metal film resistor

10

Ω