BC556,B BC557A,B,C BC558B

2

Motorola Small–Signal Transistors, FETs and Diodes Device Data

Characteristic

Symbol

Min

Typ

Max

Unit

ON CHARACTERISTICS

DC Current Gain

(IC = –10 µAdc, VCE = –5.0 V)

BC557A

BC556B/557B/558B

BC557C

(IC = –2.0 mAdc, VCE = –5.0 V)

BC556

BC557

BC558

BC557A

BC556B/557B/558B

BC557C

(IC = –100 mAdc, VCE = –5.0 V)

BC557A

BC556B/557B/558B

BC557C

hFE

—

—

—

120

120

120

120

180

420

—

—

—

90

150

270

—

—

—

170

290

500

120

180

300

—

—

—

500

800

800

220

460

800

—

—

—

—

Collector – Emitter Saturation Voltage

(IC = –10 mAdc, IB = –0.5 mAdc)

(IC = –10 mAdc, IB = see Note 1)

(IC = –100 mAdc, IB = –5.0 mAdc)

VCE(sat)

—

—

—

–0.075

–0.3

–0.25

–0.3

–0.6

–0.65

V

Base – Emitter Saturation Voltage

(IC = –10 mAdc, IB = –0.5 mAdc)

(IC = –100 mAdc, IB = –5.0 mAdc)

VBE(sat)

—

—

–0.7

–1.0

—

—

V

Base–Emitter On Voltage

(IC = –2.0 mAdc, VCE = –5.0 Vdc)

(IC = –10 mAdc, VCE = –5.0 Vdc)

VBE(on)

–0.55

—

–0.62

–0.7

–0.7

–0.82

V

SMALL–SIGNAL CHARACTERISTICS

Current – Gain — Bandwidth Product

(IC = –10 mA, VCE = –5.0 V, f = 100 MHz)

BC556

BC557

BC558

fT

—

—

—

280

320

360

—

—

—

MHz

Output Capacitance

(VCB = –10 V, IC = 0, f = 1.0 MHz)

Cob

—

3.0

6.0

pF

Noise Figure

(IC = –0.2 mAdc, VCE = –5.0 V,

BC556

RS = 2.0 kW, f = 1.0 kHz, ∆f = 200 Hz)

BC557

BC558

NF

—

—

—

2.0

2.0

2.0

10

10

10

dB

Small–Signal Current Gain

(IC = –2.0 mAdc, VCE = –5.0 V, f = 1.0 kHz)

BC556

BC557/558

BC557A

BC556B/557B/558B

BC557C

hfe

125

125

125

240

450

—

—

220

330

600

500

900

260

500

900

—

Note 1: IC = –10 mAdc on the constant base current characteristics, which yields the point IC = –11 mAdc, VCE = –1.0 V.