2N4449 datasheet(2/8 Pages) MICROSEMI

2 / 8 page

TECHNICAL DATA SHEET

6 Lake Street, Lawrence, MA 01841

Gort Road Business Park, Ennis, Co. Clare, Ireland

1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803

Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298

Website: http://www.microsemi.com

T4-LDS-0057 Rev. 3 (110213)

Page 2 of 8

ELECTRICAL CHARACTERISTICS (TA = +25°C, unless otherwise noted)

Parameters / Test Conditions

Symbol

Min.

Max.

Unit

OFF CHARACTERISTICS

Emitter-Base Cutoff Current

IEBO

Adc

VEB = 4.5Vdc

VEB = 4.0Vdc

0.25

Collector- Base Cutoff Current

ICBO

Adc

VCB = 40Vdc

VCB = 32Vdc

0.2

ON CHARACTERISTICS

(1)

Forward-Current Transfer Ratio

hFE

IC = 10mAdc, VCE = 0.35Vdc

IC = 30mAdc, VCE = 0.4Vdc

IC = 10mAdc, VCE = 1.0Vdc

IC = 100mAdc, VCE = 1.0Vdc

120

Collector-Emitter Saturation Voltage

VCE(sat)

Vdc

IC = 10mAdc, IB = 1.0mAdc

IC = 30mAdc, IB = 3.0mAdc

IC = 100mAdc, IB = 10mAdc

0.20

0.25

0.45

Base-Emitter Saturation Voltage

VBE(sat)

Vdc

IC = 10mAdc, IB = 1.0mAdc

IC = 30mAdc, IB = 3.0mAdc

IC = 100mAdc, IB = 10mAdc

0.70

0.80

0.85

0.90

1.20

DYNAMIC CHARACTERISTICS

Parameters / Test Conditions

Symbol

Min.

Max.

Unit

Forward Current Transfer Ratio

IC = 10mAdc, VCE = 10Vdc, f = 100MHz

|hfe|

5.0

Output Capacitance

Cobo

4.0

VCB = 5.0Vdc, IE = 0, 100kHz  f  1.0MHz

Input Capacitance

Cibo

5.0

VEB = 0.5Vdc, IC = 0, 100kHz  f  1.0MHz

SWITCHING CHARACTERISTICS

Parameters / Test Conditions

Symbol

Min.

Max.

Unit

Turn-On Time

IC = 10mAdc; IB1 = 3.0mAdc, IB2 = -1.5mAdc

ton

s

Turn-Off Time

IC = 10mAdc; IB1 = 3.0mAdc, IB2 = -1.5mAdc

toff

s

Charge Storage Time

IC = 10mAdc; IB1 = 10mAdc, IB2 = 10mAdc

s

(1) Pulse Test: Pulse Width = 300

s, Duty Cycle  2.0%.

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