BF240

2

Motorola Small–Signal Transistors, FETs and Diodes Device Data

VCE = 10 V

TA = 25°C

BF240

1000

10

20

100

200

300

500

700

100

0.2 0.3 0.5 0.7 1

3

5

10

20

IC, COLLECTOR CURRENT (mA)

Figure 1. Current–Gain — Bandwidth Product

10

0.2

0.1

VR, REVERSE VOLTAGE (VOLTS)

Figure 2. Capacitances

0.3

0.4

0.5

0.7

1

2

0.2

0.5

1

3

5

10

20

Cre @ IE = 0

Cob

Cib

200

0.1

IC, COLLECTOR CURRENT (mA)

Figure 3. DC Current Gain

0.2 0.3 0.5 0.7 1

2

3

5 7 10

20

100

10

20

30

50

70

100

1

2

5

10

20

50

2

3

4

5

6

7

8

IC, COLLECTOR CURRENT (mA)

Figure 4. b11e

VCE = 10 V

TA = 25°C

BF240

VCE = 10 V

100 MHz

45 MHz

10.7 MHz

b11e 470 kHz < 0.2 mmhos

–100

–1

–2

–5

–10

–20

–50

2

3

4

5

6

7

8

IC, COLLECTOR CURRENT (mA)

Figure 5. b21e

VCE = 10 V

100 MHz

45 MHz

10.7 MHz

b21e, at 470 kHz < 0.5 mmhos

2000

1

2

3

4

5

6

7

IC, COLLECTOR CURRENT (mA)

Figure 6. b22e (boe)

20

50

100

200

500

1000

VCE = 10 V

100 MHz

45 MHz

10.7 MHz

470 kHz