BFG25AW-X 查看數據表（PDF） - Philips Electronics

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BFG25AW-X

NPN 5 GHz wideband transistors

Philips Electronics 

Philips Semiconductors

NPN 5 GHz wideband transistors

Product specification

BFG25AW; BFG25AW/X

4

handbook, halfpage

F

(dB)

3

2

1

0

10−1

MCD145

f = 2 GHz

1 GHz

500 MHz

1

10

IC (mA)

VCE = 1 V.

Fig.10 Minimum noise figure as a function

of collector current; typical values.

4

handbook, halfpage

F

(dB)

3

2

1

0

102

MCD146

IC = 2 mA

1 mA

0.5 mA

103

104

f (MHz)

VCE = 1 V.

Fig.11 Minimum noise figure as a function of

frequency; typical values.

handbook, full pagewidth

135 o

0.5

0.2

180 o 0

0.2

0.5

0.2

90 o

1

2

45 o

5

Fmin = 1.9 dB

1

2

5 Γopt

F = 3 dB

F = 4 dB

F = 5 dB

5

1.0

0.8

0.6

0.4

0.2

0o 0

0.5

135 o

1

90 o

f = 500 MHz; VCE = 1 V; IC = 1 mA; Zo = 50 Ω.

2

45 o

MLB977

1.0

Fig.12 Common emitter noise figure circles; typical values.

1998 Sep 23

6

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