BC556B, BC557, A, B, C, BC558B, C

http://onsemi.com

3

Characteristic

Symbol

Min

Typ

Max

Unit

ON CHARACTERISTICS

DC Current Gain

(IC = –10 µAdc, VCE = –5.0 V)

A Series Device

B Series Devices

C Series Devices

(IC = –2.0 mAdc, VCE = –5.0 V)

BC557

A Series Device

B Series Devices

C Series Devices

(IC = –100 mAdc, VCE = –5.0 V)

A Series Device

B Series Devices

C Series Devices

hFE

–

–

–

120

120

180

420

–

–

–

90

150

270

–

170

290

500

120

180

300

–

–

–

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)

BC557

A Series Device

B Series Devices

C Series Devices

hfe

125

125

240

450

–

–

–

–

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.