September 1992

8

Philips Semiconductors

Product specification

VHF power MOS transistor

BLF147

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 (

ε

thickness 1.6 mm.

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE NO.

C1, C3, C13, C14

film dielectric trimmer

7 to 100 pF

2222 809 07015

C2, C8, C9

multilayer ceramic chip capacitor

(note 1)

75 pF

C4, C5

multilayer ceramic chip capacitor

100 nF

2222 852 47104

C6

multilayer ceramic chip capacitors in

parallel

3

× 100 nF

2222 852 47104

C7

electrolytic capacitor

2.2

µF, 63 V

C10

multilayer ceramic chip capacitor

(note 1)

100 pF

C11, C12

multilayer ceramic chip capacitor

(note 1)

150 nF

C15

multilayer ceramic chip capacitor

(note 1)

240 pF

L1

6 turns enamelled 0.7 mm copper

wire

145 nH

length 5 mm;

int. dia. 6 mm;

leads 2

× 5 mm

L2, L3

stripline (note 2)

41.1

Ω

length 13

× 6 mm

L4

4 turns enamelled 1.5 mm copper

wire

148 nH

length 8 mm;

int. dia. 10 mm;

leads 2

× 5 mm

L5, L6

grade 3B Ferroxcube wideband HF

choke

4312 020 36642

L7

3 turns enamelled 2.2 mm copper

wire

79 nH

length 8 mm;

int. dia. 8 mm;

leads 2

× 5 mm

R1, R2

1 W metal film resistor

19.6

Ω

2322 153 51969

R3

0.4 W metal film resistor

10 k

Ω

2322 151 71003

R4

0.4 W metal film resistor

1 M

Ω

2322 151 71005

R5

1 W metal film resistor

10

Ω

2322 153 51009