2003 Sep 19
16
Philips Semiconductors
Product Specification
VHF push-pull power MOS transistor
BLF278
List of components (see Figs 21 and 22).
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
3
×
18 pF
in parallel, 500 V
C5
film dielectric trimmer
4 to 40 pF
2222 809 08002
C6, C30
film dielectric trimmer
2 to 18 pF
2222 809 09006
C7
multilayer ceramic chip capacitor;
note 1
100 pF, 500 V
C8, C9, C15, C18
MKT film capacitor
1
µ
F, 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
2
×
1 nF in parallel,
500 V
C16, C17
electrolytic capacitor
220
µ
F, 63 V
C20
multilayer ceramic chip capacitor;
note 1
3
×
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
10
µ
F, 63 V
C24, C25
multilayer ceramic chip capacitor;
note 1
2
×
470 pF in
parallel, 500 V
C28
multilayer ceramic chip capacitor;
note 1
2
×
10 pF +
1
×
18 pF in
parallel, 500 V
C29
multilayer ceramic chip capacitor;
note 1
2
×
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
50
Ω
length 80 mm
width 4.8 mm
L2, L23
semi-rigid cable; note 3
50
Ω
ext. dia. 3.6 mm
outer conductor
length 80 mm
L4, L5
stripline; note 2
43
Ω
length 24 mm
width 6 mm
L6, L7
stripline; note 2
43
Ω
length 14.5 mm
width 6 mm
L8, L9
stripline; note 2
43
Ω
length 4.4 mm
width 6 mm
L10, L11
stripline; note 2
43
Ω
length 3.2 mm
width 6 mm
L12, L13
stripline; note 2
43
Ω
length 15 mm
width 6 mm