BFQ149 Philips Semiconductors, BFQ149 Datasheet - Page 4

• Manufacturer Part Number: BFQ149
• Description: PNP 5 GHz wideband transistor
• Manufacturer: Philips Semiconductors

Philips Semiconductors
September 1995
handbook, halfpage
handbook, halfpage
PNP 5 GHz wideband transistor
I
Fig.2
V
Fig.4
E
h
(pF)
CE
C c
= 0; f = 1 MHz; T
FE
= 10 V; T
80
60
40
20
4
3
2
1
0
0
0
0
Collector capacitance as a function of
collector-base voltage.
DC current gain as a function of collector
current.
j
= 25 C.
j
= 25 C.
100
10
I
V CB (V)
C
(mA)
MBB345
MEA328
200
20
4
handbook, halfpage
handbook, halfpage
(GHz)
G UM
Fig.3
I
Fig.5
V
c
(dB)
CE
T f
= 50 mA; V
= 10 V; f = 500 MHz; T
40
30
20
10
4
0
8
6
2
0
10
0
Transition frequency as a function of
collector current.
Maximum unilateral power gain as a
function of frequency.
CE
= 10 V; T
10
2
amb
amb
= 25 C.
= 25 C.
50
10
3
Product specification
I
C
f (MHz)
(mA)
BFQ149
MEA329
MBB347
100
10
4