1999 Oct 20

8

Philips Semiconductors

Product specification

HF/VHF power MOS transistor

BLF202

List of components (class-B 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 (

1.6 mm.

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE NO.

C1, C11

film dielectric trimmer

2 to 9 pF

2222 809 09005

C2, C9

film dielectric trimmer

2 to 9 pF

2222 809 09002

C3, C5

multilayer ceramic chip capacitor;

note 1

1 nF; 500 V

C4, C6

multilayer ceramic chip capacitor

2

× 100 nF

in parallel,

50 V

2222 852 47104

C7

Sprague electrolytic tantalum

capacitor

2.2

µF; 35 V

C8

multilayer ceramic chip capacitor;

note 1

5.1 pF; 500 V

C10

multilayer ceramic chip capacitor;

note 1

9.1 pF; 500 V

L1

8 turns enamelled 0.8 mm copper

wire

137 nH

length 5.1 mm;

int. dia. 4 mm;

leads 2

× 5mm

L2, L3

stripline; note 2

81

Ω

8mm

× 2mm

L4

3 turns enamelled 1 mm copper wire 57 nH

length 5 mm;

int. dia. 6 mm;

leads 2

× 5mm

L5

9 turns enamelled 1 mm copper wire 355 nH

length 11 mm;

int. dia. 7 mm;

leads 2

× 5mm

L6

grade 3B Ferroxcube RF choke

4312 020 36642

R1

0.4 W metal film resistor

237

Ω

2322 151 72371

R2

0.4 W metal film resistor

1 k

Ω

2322 151 71002

R3

0.4 W metal film resistor

1 M

Ω

2322 151 71005

R4

10 turns cermet potentiometer

5 k

Ω

R5

0.4 W metal film resistor

7.5 k

Ω

2322 151 77502

R6

1 W metal film resistor

10

Ω

2322 153 51009