1996 Oct 02

8

Philips Semiconductors

Product specification

VHF power MOS transistor

BLF346

List of components (see Figs 10 and 11).

Notes

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

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

ε

1

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE NO.

C1

film dielectric trimmer

2 to 18 pF

2222 809 09003

C2

multilayer ceramic chip capacitor

(note 1)

10 pF, 500 V

C3, C15, C16

film dielectric trimmer

4 to 40 pF

2222 809 08002

C4, C5

multilayer ceramic chip capacitor

(note 1)

56 pF, 500 V

C6, C12

multilayer ceramic chip capacitor

(note 1)

680 pF, 500 V

C7, C8, C9

multilayer ceramic chip capacitor

100 nF, 50 V

2222 852 47104

C10, C11

multilayer ceramic chip capacitor

(note 1)

43 pF, 500 V

C13

electrolytic capacitor

10

µF, 63 V

2222 030 38109

C14

multilayer ceramic chip capacitor

(note 1)

27 pF, 500 V

L1

4 turns enamelled 0.7 mm copper

wire

42.4 nH

length 4 mm;

int. dia. 3 mm;

leads 2

× 5mm

L2

stripline (note 2)

50

Ω

length 49 mm;

width 2.8 mm

L3, L4

stripline (note 2)

31

Ω

length 11.5 mm;

width 6 mm

L5

2 turns enamelled 1.5 mm copper

wire

18.7 nH

length 8 mm;

int. dia. 4 mm;

leads 2

× 5mm

L6

grade 3B Ferroxcube RF choke

4312 020 36642

L7

stripline (note 2)

31

Ω

length 40 mm;

width 6 mm

L8

3 turns enamelled 1.5 mm copper

wire

28.8 nH

length 8 mm;

int. dia. 4 mm;

leads 2

× 5mm

R1

metal film resistor

1 k

Ω, 0.4 W

2322 151 71002

R2

metal film resistor

100 k

Ω, 0.4 W

2322 151 71004

R3

10 turns cermet potentiometer

100

Ω

R4

metal film resistor

316 k

Ω, 0.4 W

2322 153 53161

R5

metal film resistor

10

Ω, 0.4 W

2322 153 51009