BF959

2

Motorola Small–Signal Transistors, FETs and Diodes Device Data

Figure 1. hFE at 10 V

IC, COLLECTOR CURRENT (mA)

30

50

200

500

1000

10

1

Figure 2. VCE(sat) at IC/IB = 10

IC, COLLECTOR CURRENT (mA)

10

20

30

50

2

3

4 5

100

40

20

100

30

50

200

500

10

1

10

20

30

50

2

3

4

5

100

40

20

Figure 3. Current–Gain — Bandwidth Product

IC, COLLECTOR CURRENT (mA)

0.8

1.2

1.6

1.8

2.0

0.4

1

Figure 4. Capacitances

VR, REVERSE VOLTAGE (VOLTS)

10

20

30

50

2

3

4 5

1.4

1

0.6

100

1

10

20

30

50

2

3

4 5

100

0.8

1.2

1.6

1.8

0.4

1.4

1

0.6

0.2

Figure 5. Input Impedance at 30 MHz

IC, COLLECTOR CURRENT (mA)

0.3

0.5

2

5

10

0.1

1

Figure 6. Output Impedance at 30 MHz

IC, COLLECTOR CURRENT (mA)

10

20

30

50

2

3

4 5

1

0.4

0.2

100

1

10

20

30

50

2

3

4

5

40

100

300

500

20

200

50

30

10

3

4

5 V

10 V

2 V

Cob

Cib

Cre

VCE = 10 V

g11e

b11e

VCE = 10 V

b22e

g22e

40