NXP Semiconductors

Product specification

HF/VHF power MOS transistor

BLF177

List of components class-B test circuit (see Fig.19)

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, C2, C16, C18

film dielectric trimmer

2.5 to 20 pF

2222 809 07004

C3

multilayer ceramic chip capacitor

(note 1)

20 pF

C4, C5

multilayer ceramic chip capacitor

(note 1)

62 pF

C6, C7, C9, C10

multilayer ceramic chip capacitor

(note 1)

1nF

C8

multilayer ceramic chip capacitor

100 nF

2222 852 47104

C11

multilayer ceramic chip capacitor

10 nF

2222 852 47103

C12

multilayer ceramic chip capacitor

3

× 100 nF

2222 852 47104

C13, C14

multilayer ceramic chip capacitor

(note 1)

36 pF

C15

multilayer ceramic chip capacitor

(note 1)

12 pF

C17

multilayer ceramic chip capacitor

(note 1)

5.6 pF

C19

electrolytic capacitor

4.4

µF, 63 V

2222 030 28478

L1

3 turns enamelled 0.8 mm copper

wire

22 nH

length 5.5 mm;

int. dia. 3 mm;

leads 2

× 5mm

L2

stripline (note 2)

64.7

Ω

31

× 3mm

L3, L4

stripline (note 2)

41.1

Ω

10

× 6mm

L5

6 turns enamelled 1.6 mm copper

wire

122 nH

length 13.8 mm;

int. dia. 6 mm;

leads 2

× 5mm

L6

grade 3B Ferroxcube wideband HF

choke

4312 020 36642

L7

1 turn enamelled 1.6 mm copper

wire

16.5 nH

int. dia. 9 mm;

leads 2

× 5mm

L8

2 turns enamelled 1.6 mm copper

wire

34.4 nH

length 3.9 mm;

int. dia. 6 mm;

leads 2

× 5mm

R1, R2

metal film resistor

31.6

Ω, 1 W

R3

metal film resistor

1 k

Ω, 0.4 W

R4

cermet potentiometer

5 k

Ω

R5

metal film resistor

44.2 k

Ω, 0.4 W

R6

metal film resistor

10

Ω, 1W

Rev. 06 - 24 January 2007

13 of 19