ELECTRICAL CHARACTERISTICS

Ratings at 25 °C ambient temperature unless otherwise specified

Symbol

Min.

Typ.

Max.

Unit

f = 1 kHz,

Small Signal Current Gain

Current Gain Group A

B

C

Input Impedance

Current Gain Group A

B

C

Output Admittance

Current Gain Group A

B

C

Reverse Voltage Transfer Ratio

Current Gain Group A

B

C

–

–

–

1.6

3.2

6

–

–

–

–

–

–

220

330

600

2.7

4.5

8.7

18

30

60

–

–

–

4.5

8.5

15

30

60

110

–

–

–

–

–

–

k

Ω

k

Ω

k

Ω

µS

µS

µS

–

–

–

DC Current Gain

Current Gain Group A

B

C

Current Gain Group A

B

C

Current Gain Group A

B

C

–

–

–

110

200

420

–

–

–

90

150

270

180

290

500

120

200

400

–

–

–

220

450

800

–

–

–

–

–

–

–

–

–

–

–

–

Thermal Resistance Junction to Ambient Air

–

–

K/W

Collector Saturation Voltage

–

–

80

200

200

600

mV

mV

Base Saturation Voltage

–

–

700

900

–

–

mV

mV

Base-Emitter Voltage

580

–

660

–

700

720

mV

mV

Collector-Emitter Cutoff Current

BC546

BC547

BC548, BC549

BC546

BC547

–

–

–

–

–

0.2

0.2

0.2

–

–

15

15

15

4

4

nA

nA

nA

µA

µA

BC546 THRU BC549