NXP Semiconductors

Product specification

HF/VHF power MOS transistor

BLF177

List of components class-AB test circuit (see Fig.13)

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

(Rogers 5880).

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE NO.

C1, C4, C13, C14

film dielectric trimmer

7 to 100 pF

2222 809 07015

C2

multilayer ceramic chip capacitor

(note 1)

56 pF

C3, C11

multilayer ceramic chip capacitor

(note 1)

62 pF

C5, C6

multilayer ceramic chip capacitor

100 nF

2222 852 47104

C7

multilayer ceramic chip capacitor

3

× 100 nF

2222 852 47104

C8

electrolytic capacitor

2.2

µF, 63 V

C9, C10

multilayer ceramic chip capacitor

(note 1)

20 pF

C12

multilayer ceramic chip capacitor

(note 1)

100 pF

C15

multilayer ceramic chip capacitor

(note 1)

150 pF

L1

5 turns enamelled 0.7 mm copper

wire

133 nH

length 4.5 mm; int.

dia. 6 mm; leads

2

× 5mm

L2, L3

stripline (note 2)

41.1

Ω

length 13

× 6mm

L4

7 turns enamelled 1.5 mm copper

wire

236 nH

length 12.5 mm;

int. dia. 8 mm;

leads 2

× 5mm

L5

grade 3B Ferroxcube wideband HF

choke

4312 020 36642

L6

5 turns enamelled 2 mm copper wire 170 nH

length 11.5 mm;

int. dia. 8 mm;

leads 2

× 5mm

R1, R2

metal film resistor

10

Ω, 1 W

R2

metal film resistor

10 k

Ω, 0.4 W

R3

metal film resistor

1 M

Ω, 0.4 W

R5

metal film resistor

10 k

Ω, 1 W

Rev. 06 - 24 January 2007

9 of 19