BLF378 datasheet(9/16 Pages) PHILIPS

9 / 16 page

1998 Jul 29

Philips Semiconductors

Product speciﬁcation

VHF push-pull power MOS transistor

BLF378

List of components class-AB test circuit (see Figs 12 and 13).

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE No.

C1, C2

multilayer ceramic chip capacitor;

note 1

27 pF, 500 V

C3, C4, C31, C32

multilayer ceramic chip capacitor;

note 1

× 18 pF in

parallel, 500 V

ﬁlm dielectric trimmer

4 to 40 pF

2222 809 08002

C6, C30

ﬁlm dielectric trimmer

2 to 18 pF

2222 809 09006

multilayer ceramic chip capacitor;

note 1

100 pF, 500 V

C8, C9, C15, C18

MKT ﬁlm capacitor

µF, 63 V

2222 371 11105

C10, C13, C14,

C19, C36

multilayer ceramic chip capacitor

100 nF, 50 V

2222 852 47104

C11, C12

multilayer ceramic chip capacitor;

note 1

× 1 nF in

parallel, 500 V

C16, C17

electrolytic capacitor

220

µF, 63 V

C20

multilayer ceramic chip capacitor;

note 1

× 33 pF in

parallel, 500 V

C21

ﬁlm dielectric trimmer

2 to 9 pF

2222 809 09005

C22, C27, C37,

C38

multilayer ceramic chip capacitor;

note 1

1 nF, 500 V

C23, C26, C35

electrolytic capacitor

µF, 63 V

C24, C25

multilayer ceramic chip capacitor;

note 1

× 470 pF in

parallel, 500 V

C28

multilayer ceramic chip capacitor;

note 1

× 10 pF in

parallel + 18 pF,

500 V

C29

multilayer ceramic chip capacitor;

note 1

× 5.6 pF in

parallel, 500 V

C33, C34

multilayer ceramic chip capacitor;

note 1

5.6 pF, 500 V

L1, L3, L22, L24

stripline; note 2

Ω

4.8

× 80 mm

L2, L23

semi-rigid cable; note 3

Ω

ext. conductor

length 80 mm

ext. dia 3.6 mm

L4, L5

stripline; note 2

Ω

× 24 mm

L6, L7

stripline; note 2

Ω

× 14.5 mm

L8, L9

stripline; note 2

Ω

× 4.4 mm

L10, L11

stripline; note 2

Ω

× 3.2 mm

L12, L13

stripline; note 2

Ω

× 15 mm

L14, L17

grade 3B Ferroxcube wideband HF

choke

2 in parallel

4312 020 36642

L15, L16

⁄4 turns enamelled 2 mm copper

wire

40 nH

space 1 mm

int. dia. 10 mm

leads 2

× 7mm

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