BFG21W Philips Semiconductors, BFG21W Datasheet - Page 5

• Manufacturer Part Number: BFG21W
• Description: UHF power transistor
• Manufacturer: Philips Semiconductors

Philips Semiconductors
List of components used in test circuit (see Figs 4 and 5)
Notes
1. American Technical Ceramics type 100A or capacitor of same quality.
2. The striplines are on a double copper-clad printed-circuit board with PTFE fibre-glass dielectric (
1998 Jul 06
handbook, full pagewidth
COMPONENT
C1, C5
C2
C3, C6
C4
C7
L1, L4
L2
L3
L5
R1
R2, R3
TR1
UHF power transistor
tan
= 0.0019); thickness 0.64 mm, copper cladding = 35 m.
multilayer ceramic chip capacitor; note 1
multilayer ceramic chip capacitor; note 1
multilayer ceramic chip capacitor, note 1
multilayer ceramic chip capacitor; note 1
multilayer ceramic chip capacitor; note 1
stripline; note 2
stripline; note 2
stripline; note 2
Grade 4S2 Ferroxcube chip bead
metal film resistor
metal film resistor
NPN transistor
RF input
Fig.4 Common emitter test circuit for class-AB operation at 1.9 GHz.
50
DESCRIPTION
V C
TR1
R1
R2
C1
C3
C2
L1
L2
5
DUT
24 pF
3.3 pF
15 pF
2.4 pF
1 nF
100
50
50
220 ; 0.4 W
10 ; 0.4 W
BC817
VALUE
L3
V S
L4
L5
R3
C6
18
3.2
4.6
C4
C5
DIMENSIONS
C7
0.2 mm
0.8 mm
0.8 mm
RF output
MGM221
50
Product specification
4330 030 36300
9335 895 20215
CATALOGUE No.
r
= 6.15,
BFG21W