BC546, B BC547, A, B, C BC548, A, B, C

4

Motorola Small–Signal Transistors, FETs and Diodes Device Data

BC547/BC548

Figure 7. DC Current Gain

IC, COLLECTOR CURRENT (mA)

Figure 8. “On” Voltage

IC, COLLECTOR CURRENT (mA)

0.8

1.0

0.6

0.2

0.4

1.0

2.0

0.1

1.0

10

100

0.2

0.2

0.5

0.2

1.0

10

200

TA = 25°C

VBE(sat) @ IC/IB = 10

VCE(sat) @ IC/IB = 10

VBE @ VCE = 5.0 V

Figure 9. Collector Saturation Region

IB, BASE CURRENT (mA)

Figure 10. Base–Emitter Temperature Coefficient

IC, COLLECTOR CURRENT (mA)

–1.0

1.2

1.6

2.0

0.02

1.0

10

0

20

0.1

0.4

0.8

0.2

2.0

10

200

1.0

TA = 25°C

200 mA

50 mA

IC =

10 mA

VCE = 5 V

TA = 25°C

0

0.5

2.0

5.0

20

50

100

0.05

0.2

0.5

2.0

5.0

100 mA

20 mA

–1.4

–1.8

–2.2

–2.6

–3.0

0.5

5.0

20

50

100

–55

°C to 125°C

θVB for VBE

BC546

Figure 11. Capacitance

VR, REVERSE VOLTAGE (VOLTS)

40

Figure 12. Current–Gain – Bandwidth Product

IC, COLLECTOR CURRENT (mA)

0.1

0.2

1.0

50

2.0

2.0

10

100

100

200

500

50

20

20

10

6.0

4.0

1.0

10

50 100

5.0

VCE = 5 V

TA = 25°C

0.5

5.0

20

TA = 25°C

Cob

Cib