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Philips Semiconductors
VHF push-pull power MOS transistor
handbook, full pagewidth
strap
strap
V DD1
L1
50
input
Dimensions in mm.
The circuit and components are situated on one side of the PTFE fibre-glass board, the other side being fully metallized to serve as an earth.
Earth connections are made by means of copper straps for a direct contact between upper and lower sheets.
Fig.22 Printed-circuit board and component layout for 225 MHz class-AB test circuit.
2003 Sep 19
119
Hollow
rivets
IC1
R11
C36
C38
L2
C35
C37
slider R2
C11
C10 R3
C3
C1
C6
L4
R1
C5
L5
C2
C4
C13 R6
C12
slider R7
L3
strap
strap
strap
strap
C24
to R2,R7
C14
L14
C16
R8
C15
L14
C8
L15
R4
L10
L12
L18
L6
L8
C20
C21
C7
L7 L9
L19
L11
L13
R5
L16
C9
L17
C18
R9
C17
L17
C25
18
130
C22
C23
L22
V DD1
R10
C31
C30
C33
L20
C28
C29
L21
C34
C32
V DD2
L23
L24
C19
C26
C27
Product Specification
BLF278
strap
Hollow
100
rivets
strap
50
output
MBC436
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