BLF242 Datasheet, PDF (7/11 Pages) NXP Semiconductors – HF/VHF power MOS transistor

Philips Semiconductors
HF/VHF power MOS transistor
Product specification
BLF242
handbook, full pagewidth
input
50 Ω
f = 175 MHz.
C1
L1
D.U.T.
L3
L2
C2
R1
C3
C3
+VG
L5 ^C6
C7
L4
L6
R2
C5
C8
output
50 Ω
+VD
C9
MGP145
Fig.11 Test circuit for class-B operation.
List of components (class-B test circuit)
COMPONENT
C1, C2, C7
C3
C4, C8
C6
C9
L1
DESCRIPTION
VALUE
film dielectric trimmer
4 to 40 pF
multilayer ceramic chip capacitor
(note 1)
100 pF
ceramic chip capacitor
100 nF
film dielectric trimmer
5 to 60 pF
electrolytic capacitor
2.2 µF, 40 V
5 turns enamelled 0.7 mm copper wire 53 nH
L2, L3
L4
stripline (note 2)
30 Ω
11 turns enamelled 1 mm copper wire 500 nH
L5
5 turns enamelled 1 mm copper wire 79 nH
L6
grade 3B Ferroxcube RF choke
R1
0.5 W metal film resistor
47 Ω
R2
0.5 W metal film resistor
10 Ω
DIMENSIONS
length 5.4 mm
int. dia. 3 mm
leads 2 × 5 mm
10 × 6 mm
length 15.5 mm
int. dia. 8 mm
leads 2 × 5 mm
length 9.1 mm
int. dia. 5 mm
leads 2 × 5 mm
CATALOGUE NO.
2222 809 08002
2222 852 47104
2222 809 08003
4312 020 36640
Notes
1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.
2. The striplines are on a double copper-clad printed circuit board, with epoxy fibre-glass dielectric (ε_r = 4.5),
thickness ¹â„₁₆ inch.
September 1992
7