2N3905 datasheet(2/2 Pages) FAIRCHILD

Part #	2N3905

Description	PNP General Purpose Amplifier

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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PNP General Purpose Amplifier

(continued)

Electrical Characteristics

TA = 25°C unless otherwise noted

OFF CHARACTERISTICS

Symbol

Parameter

Test Conditions

Min

Max

Units

V(BR)CEO

Collector-Emitter Breakdown Voltage*

IC = 1.0 mA, IB = 0

40

V

V(BR)CBO

Collector-Base Breakdown Voltage

IC = 10

µA, I

E = 0

40

V

V(BR)EBO

Emitter-Base Breakdown Voltage

IE = 10

µA, I

C = 0

5.0

V

ICEX

Collector Cutoff Current

VCE = 30 V, VOB = 3.0 V

50

nA

IBL

Base Cutoff Current

VCE = 30 V, VOB = 3.0 V

50

nA

hFE

DC Current Gain

VCE = 1.0 V, IC = 0.1 mA

VCE = 1.0 V, IC = 1.0 mA

VCE = 1.0 V, IC = 10 mA

VCE = 1.0 V, IC = 50 mA

VCE = 1.0 V, IC = 100 mA

30

40

50

30

15

150

VCE(sat)

Collector-Emitter Saturation Voltage

IC = 10 mA, IB = 1.0 mA

IC = 50 mA, IB = 5.0 mA

0.25

0.40

V

VBE(sat)

Base-Emitter Saturation Voltage

IC = 10 mA, IB = 1.0 mA

IC = 50 mA, IB = 5.0 mA

0.65

0.85

0.95

V

SMALL SIGNAL CHARACTERISTICS

Cob

Output Capacitance

VCB = 5.0 V, f = 1.0 MHz

4.5

pF

Cib

Input Capacitance

VEB = 0.5 V, f = 1.0 MHz

10

pF

hfe

Small-Signal Current Gain

IC = 10 mA, VCE = 20 V,

f = 100 MHz

2.0

hfe

Small-Signal Current Gain

IC = 1.0 mA, VCE =10 V,

50

200

hre

Voltage Feedback Ratio

f = 1.0 KHz

0.1

5.0

x10

-4

hie

Input Impedance

0.5

8.0

k

Ω

hoe

Output Impedance

1.0

40

µmhos

NF

Noise Figure

VCE = 5.0 V, IC = 100

µA,

RS = 1.0 k

Ω,

BW = 10 Hz to 15.7 KHz

5.0

dB

SWITCHING CHARACTERISTICS

*Pulse Test: Pulse Width ≤300µs, Duty Cycle ≤2.0%

td

Delay Time

VCC = 3.0 V, ICS = 10 mA,

35

ns

tr

Rise Time

IB1 = 1.0 mA ,VOB ( off ) = 3.0 V

35

ns

ts

Storage Time

VCC = 3.0 V, ICS = 10 mA,

200

ns

tf

Fall Time

IB1 = IB2 = 1.0 mA

60

ns

ON CHARACTERISTICS*

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