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UNISONIC TECHNOLOGIES CO., LTD
2N4401
NPN SILICON TRANSISTOR
NPN GENERAL PURPOSE
AMPLIFIER
DESCRIPTION
The UTC 2N4401 is designed for use as a medium power
amplifier and switch requiring collector currents up to 500mA.
1
TO-92
*Pb-free plating product number: 2N4401L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
2N4401-T92-B
2N4401L-T92-B
2N4401-T92-K
2N4401L-T92-K
Package
TO-92
TO-92www.DataSheet4U.com
Pin Assignment
123
EBC
EBC
Packing
Tape Box
Bulk
2N4401L-T92-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) B: Tape Box, K: Bulk
(2) T92: TO-92
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
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QW-R201-052,B
2N4401
TYPICAL CHARACTERISTICS(Cont.)
Turn On and Turn Off Times
vs Collector Current
400
320
IB1=IB2=
IC
10
VCC =25V
240
160
80 toff
ton
0
10 100 1000
Collector Current, IC (mA)
1
0.75
0.5
0.25
Power Dissipation vs
Ambient Temperature
TO-92
0 25 50 75 100 125 150
Temperature ( )
Common Emitter Characteristics
2.4 VCE =10V
2 IC=10mA
f=1kHz
hre hie
1.6 hfe
1.2 hoe
0.8
0.4
0
0 20 40 60 80 100
Ambient Temperature, TA (°C)
NPN SILICON TRANSISTOR
Switching Times
vs Collector Current
400
320
I
B1=I
B2=
IC
10
VCC =25V
240
160 tS
80 tF tR
tD
010 100 1000
Collector Current, IC (mA)
Common Emitter Characteristics
8
VCE =10V
TA=25
6 f=1kHz
hoe
4
hre
2 hfe
0 hie
0 10 20 30 40 50 60
Collector Current, IC (mA)
1.3
1.25
1.2
1.15
1.1
1.05
1
0.95
0.9
0.85
0.8
0.75
0
Common Emitter Characteristics
TA=25
IC=10mA
f=1kHz
hfe
hie
hre
hoe
5 10 15 20 25 30 35
Collector Voltage, VCE (V)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R201-052,B