Philips Semiconductors
PNP 4 GHz wideband transistor
Product specification
BFT92W
90 o
1
135 o
0.5
1.0
2
45 o
0.8
0.6
0.2
180 o 0
0.2
0.5
Fmin = 2.5 dB
Γopt
1
2
F = 3 dB
5
5
0.4
0.2
0o 0
0.2
0.5
135 o
f = 500 MHz; VCE = −10 V; IC = −5 mA; Zo = 50 Ω.
F = 4 dB
F = 5 dB
1
90 o
5
2
45 o
MLB554
1.0
Fig.16 Common emitter noise figure circles, typical values.
135 o
0.5
0.2
180 o 0
0.2
0.5
0.2
90 o
1
Fmin = 3 dB
Γopt
1
2
F = 3.5 dB
F = 4 dB
F = 5 dB
2
45 o
5
5
1.0
0.8
0.6
0.4
0.2
0o 0
5
0.5
135 o
1
90 o
2
45 o
MLB555
1.0
f = 1 GHz; VCE = −10 V; IC = −5 mA; Zo = 50 Ω.
Fig.17 Common emitter noise figure circles, typical values.
May 1994
9