BFQ81 Vishay, BFQ81 Datasheet - Page 7

• Manufacturer Part Number: BFQ81
• Description: Silicon Npn Planar Rf Transistor
• Manufacturer: Vishay

Document Number 85023
Rev. 1.5, 28-Apr-05
Figure 3. Collector Base Capacitance vs. Collector Base Voltage
12873
12885
12874
2.5
2.0
1.5
1.0
0.5
1.0
0.8
0.6
0.4
0.2
4
3
2
1
0
0
0
0
0
0
Figure 4. Noise Figure vs. Collector Current
Figure 5. Noise Figure vs. Collector Current
V
f = 800 MHz
V
f = 2 GHz
CE
CE
V
CB
=10 V
4
=10 V
4
4
I
I
C
- Collector Base Voltage ( V )
C
- Collector Current ( mA )
- Collector Current ( mA )
Z
S
Z
= 50 Ω
S
8
8
8
= 50 Ω
Z
S
Z
12
= Z
12
12
S
= Z
Sopt
Sopt
f = 1 MHz
16
16
16
20
20
20
Vishay Semiconductors
BFQ81
www.vishay.com
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