BC857B-HF datasheet(2/6 Pages) COMCHIP

Part #	BC857B-HF

Description	General Purpose Transistor

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Manufacturer	COMCHIP [Comchip Technology]

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Electrical Characteristics (TA= 25°C unless otherwise specified)

Comchip Technology CO., LTD.

Page 2

REV:A

General Purpose Transistor

QW-JTR16

Company reserves the right to improve product design , functions and reliability without notice.

Collector-Base breakdown voltage

Collector-Emitter breakdown voltage

Emitter-Base break

voltage

down

Collector cut-off current

Collector-Emitter saturation voltage

Unit

Symbol

Parameter

MIN

V(BR)CBO

V

CEO

(BR)

V(BR)EBO

ICBO

VCE(sat)

-80

-50

-30

-65

-45

-30

-5

-15

V

nA

Test Conditions

IC = -10μA , IE=0

IC = -10mA , IB=0

IE = -1μA , IC=0

VCB= -30V , IE=0

MAX

DC current gain

hFE

BC856A ,857A ,858A

BC856B ,857B ,858B

BC857C ,858C

VCE = -5V , IC= -2.2mA

250

475

800

-0.65

Base-Emitter saturation voltage

VBE(sat)

V

Transition frequency

fT

MHZ

100

VCE=-5V, IC=-10mA

f=100MHZ

BC856

BC858

BC857

BC856

BC858

BC857

125

220

420

V

IC =-100mA , IB=-5mA

IC =-10mA , IB=-0.5mA

-0.3

IC =-10mA , IB=-0.5mA

IC =-100mA , IB=-5mA

TYP

-1

-0.7

-0.85

Base-Emitter voltage

VBE(on)

V

IC =-2mA , VCE=-5V

IC =-10mA ,

=-5V

VCE

-0.65

-0.82

-0.6

-0.75

CC

4.5

Collector capacitance

pF

F

10

Transition frequency

dB

IC=-200uA,VCE=-5V

RS=2kΩ,f=1kHz,

B=200Hz

2

VCB =-10V , IE=Ie=0

f=1MHZ

Emitter cut-off current

IEBO

-0.1

µA

VEB= -5V , IC=0

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