VISHAY

BC856 to BC859

Document Number 85135

Rev. 1.2, 08-Sep-04

Vishay Semiconductors

www.vishay.com

7

Figure 9. Gain-Bandwidth Product vs. Collector Current

Figure 10. Noise Figure vs. Collector Current

Figure 11. Noise Figure vs. Collector Current

T= 25 °C

amb

103

102

10

MHz

0.1

1

10

100 mA

fr

-IC

-V

=10V

CE

5V

2V

19198

dB

20

18

16

14

12

10

8

6

4

2

0

10

10

10

1

10 mA

-1

-2

-3

F

-IC

R =1MΩ

G

100 kΩ

10 kΩ

1kΩ

-V

=5V

CE

f = 120 Hz

T= 25 °C

amb

500 Ω

19199

dB

20

18

16

14

12

10

8

6

4

2

0

10

10

10

1

10 mA

-1

-2

-3

F

-IC

R =1MΩ

G

100 kΩ

10 kΩ

1kΩ

-V

=5V

CE

f = 120 Hz

T= 25 °C

amb

500 Ω

19200

Figure 12. Noise Figure vs. Collector Emitter Voltage

0.1

1

10

100 mA

-VCE

F

dB

20

18

16

14

12

10

8

6

4

2

0

R

=2k

Ω

G

-I

= 0.2 mA

C

f=1kHz

T= 25 °C

amb

19201