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Philips Semiconductors
VHF push-pull power MOS transistor
COMPONENT
L14, L17
2
wideband HF chokes in parallel
3
L15, L16
1
wire
L18, L19
stripline; note 2
L20, L21
stripline; note 2
R1
metal film resistor
R2, R7
10 turns potentiometer
R3, R6
metal film resistor
R4, R5
metal film resistor
R8, R9
metal film resistor
R10
metal film resistor
R11
metal film resistor
IC1
voltage regulator 78L05
Notes
1. American Technical Ceramics capacitor, type 100B or other capacitor of the same quality.
2. L1, L3 to L13, L18 to L22 and L24 are microstriplines on a double copper-clad printed-circuit board, with fibre-glass
reinforced PTFE dielectric (
3. L2 and L23 are soldered on to striplines L1 and L24 respectively.
2003 Sep 19
DESCRIPTION
grade 3B Ferroxcube
turns enamelled 2 mm copper
4
= 2.2), thickness
r
VALUE
40 nH
43
43
10 , 0.4 W
50 k
1 k , 0.4 W
2
5.62
in
parallel, 0.4 W
10
5%, 1 W
4
42.2
in
parallel, 1 W
5.11 k
1 W
1
inch; thickness of copper sheet 2
16
17
Product Specification
DIMENSIONS
CATALOGUE NO.
4312 020 36642
int. dia. 10 mm
leads 2
7 mm
space 1 mm
length 13 mm
width 6 mm
length 29.5 mm
width 6 mm
35 m.
BLF278
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