BC858A datasheet(4/11 Pages) INFINEON

4 / 11 page

2011-09-19

BC857...-BC860...

Electrical Characteristics at TA = 25°C, unless otherwise specified

Parameter

Symbol

Values

Unit

min.

typ.

max.

AC Characteristics

Transition frequency

IC = 20 mA, VCE = 5 V, f = 100 MHz

250

MHz

Collector-base capacitance

VCB = 10 V, f = 1 MHz

Ccb

1.5

Emitter-base capacitance

VEB = 0.5 V, f = 1 MHz

Ceb

Short-circuit input impedance

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.A

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.B

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.C

h11e

2.7

4.5

8.7

Ω

Open-circuit reverse voltage transf. ratio

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.A

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.B

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.C

h12e

1.5

10-4

Short-circuit forward current transf. ratio

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.A

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.B

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.C

h21e

200

330

600

Open-circuit output admittance

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.A

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.B

IC = 2 mA, VCE = 5 V, f = 1 kHz, hFE-grp.C

h22e

µS

Noise figure

IC = 0.2 mA, VCE = 5 V, f = 1 kHz,

∆ f = 200 Hz, RS = 2 kΩ, BC859, BC850

Equivalent noise voltage

IC = 200 mA, VCE = 5 V, RS = 2 kΩ,

= 10...50 Hz, BC860

0.11

µV

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