2N3905 2N3906

2

Motorola Small–Signal Transistors, FETs and Diodes Device Data

Characteristic

Symbol

Min

Max

Unit

ON CHARACTERISTICS(1)

DC Current Gain

(IC = 0.1 mAdc, VCE = 1.0 Vdc)

2N3905

2N3906

(IC = 1.0 mAdc, VCE = 1.0 Vdc)

2N3905

2N3906

(IC = 10 mAdc, VCE = 1.0 Vdc)

2N3905

2N3906

(IC = 50 mAdc, VCE = 1.0 Vdc)

2N3905

2N3906

(IC = 100 mAdc, VCE = 1.0 Vdc)

2N3905

2N3906

hFE

30

60

40

80

50

100

30

60

15

30

—

—

—

—

150

300

—

—

—

—

—

Collector – Emitter Saturation Voltage

(IC = 10 mAdc, IB = 1.0 mAdc)

(IC = 50 mAdc, IB = 5.0 mAdc

VCE(sat)

—

—

0.25

0.4

Vdc

Base – Emitter Saturation Voltage

(IC = 10 mAdc, IB = 1.0 mAdc)

(IC = 50 mAdc, IB = 5.0 mAdc)

VBE(sat)

0.65

—

0.85

0.95

Vdc

SMALL– SIGNAL CHARACTERISTICS

Current – Gain — Bandwidth Product

(IC = 10 mAdc, VCE = 20 Vdc, f = 100 MHz)

2N3905

2N3906

fT

200

250

—

—

MHz

Output Capacitance

(VCB = 5.0 Vdc, IE = 0, f = 1.0 MHz)

Cobo

—

4.5

pF

Input Capacitance

(VEB = 0.5 Vdc, IC = 0, f = 1.0 MHz)

Cibo

—

10.0

pF

Input Impedance

(IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz)

2N3905

2N3906

hie

0.5

2.0

8.0

12

k

Ω

Voltage Feedback Ratio

(IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz)

2N3905

2N3906

hre

0.1

0.1

5.0

10

X 10–4

Small–Signal Current Gain

(IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz)

2N3905

2N3906

hfe

50

100

200

400

—

Output Admittance

(IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz)

2N3905

2N3906

hoe

1.0

3.0

40

60

mmhos

Noise Figure

(IC = 100 mAdc, VCE = 5.0 Vdc, RS = 1.0 k Ω, f = 1.0 kHz)

2N3905

2N3906

NF

—

—

5.0

4.0

dB

SWITCHING CHARACTERISTICS

Delay Time

(VCC = 3.0 Vdc, VBE = 0.5 Vdc,

td

—

35

ns

Rise Time

( CC

,

BE

,

IC = 10 mAdc, IB1 = 1.0 mAdc)

tr

—

35

ns

Storage Time

2N3905

2N3906

(VCC = 3.0 Vdc, IC = 10 mAdc,

ts

—

—

200

225

ns

Fall Time

(VCC = 3.0 Vdc, IC = 10 mAdc,

IB1 = IB2 = 1.0 mAd

2N3905

2N3906

tf

—

—

60

75

ns

1. Pulse Test: Pulse Width

v 300 ms; Duty Cycle v 2.0%.