MMBT4401
NPN General
Purpose Amplifier
SOT-23
Suggested Solder
Pad Layout
Features
• Surface Mount SOT-23 Package
• Capable of 350mWatts of Power Dissipation
DIMENSIONS
INCHES MM
DIM MIN MAX MIN MAX NOTE
A .110 .120 2.80 3.04
B.083.104 2.102.64
C .047 .055 1.20 1.40
D .035 .041 .89 1.03
E .070 .081 1.78 2.05
F .018 .024 .45 .60
G .0005 .0039 .013 .100
H .035 .044 .89 1.12
J .003 .007 .085 .180
K .015 .020 .37 .51
Electrical Characteristics @ 25°C Unless Otherwise Specified
Symbol Parameter Min Max Units
OFF CHARACTERISTICS
V(BR)CEO Collector-Emitter Breakdown Voltage*
(IC=1.0mAdc, IB=0)
40 Vdc
V(BR)CBO Collector-Base Breakdown Voltage
(IC=10mAdc, IE=0)
60 Vdc
V(BR)EBO Emitter-Base Breakdown Voltage
(IE=0.1mAdc, IC=0)
6.0 Vdc
IBL Base Cutoff Current
(VCE=35Vdc, VBE=0.4Vdc)
0.1 µAdc
ICEX Collector Cutoff Current
(VCE=35Vdc, VBE=0.4Vdc)
0.1 µAdc
ON CHARACTERISTICS
hFE DC Current Gain*
(IC=0.1mAdc, VCE=1.0Vdc)
(IC=1.0mAdc, VCE=1.0Vdc)
(IC=10mAdc, VCE=1.0Vdc)
(IC=150mAdc, VCE=1.0Vdc)
(IC=500mAdc, VCE=1.0Vdc)
20
40
80
100 300
40
VCE(sat) Collector-Emitter Saturation Voltage
(IC=150mAdc, IB=15mAdc)
(IC=500mAdc, IB=50mAdc)
0.4
0.75
Vdc
VBE(sat) Base-Emitter Saturation Voltage
(IC=150mAdc, IB=15mAdc)
(IC=500mAdc, IB=50mAdc)
0.75 0.95
1.2
Vdc
SMALL-SIGNAL CHARACTERISTICS
fTCurrent Gain-Bandwidth Product
(IC=20mAdc, VCE=10Vdc, f=100MHz) 250 MHz
Ccb Collector-Base Capacitance
(VCB=5.0Vdc, IE=0, f=1.0MHz) 6.5 pF
Ceb Emitter-Base Capacitance
(VBE=0.5Vdc, IC=0, f=1.0MHz) 30.0 pF
SWITCHING CHARACTERISTICS
td Delay Time (VCC=30Vdc, VBE=0.2Vdc 15 ns
tr Rise Time IC=150mAdc, IB1=15mAdc) 20 ns
ts Storage Time (VCC=30Vdc, IC=150mAdc 225 ns
tf Fall Time IB1=IB2=15mAdc) 30 ns
*Pulse Width ≤ 300µs, Duty Cycle ≤ 2.0%
.079
2.000 in
c
h
es
mm
.
03
1
.800
.035
.900
.
03
7
.950
.037
.950
A
B
C
D
E
F
GH
J
omponents
20736 Marilla Street Chatsworth

 !"#
$%  !"#
MCC
Revision: A 2011/01/01
TM
Micro Commercial Components
x Operating and Storage Junction Temperatures:-55ćto 150ć
• IC=600mA
K
E
B
C
xMarking:2X/M4A
www.mccsemi.com
1 of 4
• Lead Free Finish/RoHS Compliant ("P" Suffix designates
RoHS Compliant. See ordering information)
• Epoxy meets UL 94 V-0 flammability rating
• Moisure Sensitivity Level 1
MMBT4401
DC Current Gain vs Collector Current
hFE
IC (mA)
60
120
180
240
300
360
110 100 1000
Base-Emitter ON Voltage vs
Collector Current
VBE(ON) - (V)
IC - (mA)
0
0.2
0.4
0.6
0.8
1.0
1.2
110 100 1000
Collector-Emitter Saturation
Volatge vs Collector Current
Base-Emitter Saturation
Voltage vs Collector Current
VCE(SAT) - (V) VBE(SAT) - (V)
0
.04
.08
.12
.16
.20
.24
1.0 10 100 1000 0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.0 10 100 1000
IC - (mA) IC - (mA)
Collector-Base Diode Reverse
Current vs Temperature
ICBO - (mA)
TJ - (°C)
0.1
1.0
10
100
025 50 75 100 125 150
VCB = 20V
IC/IB = 10
TA = 25°C
IC/IB = 10
TA = 25°C
VCE = 10V VCE = 10V
TA = 25°C
TA = 125°C
Input Capacitance vs
Reverse Bias Voltage
Volts - (V)
pF
0
8
16
24
32
40
0.1 1.0 10
Ceb
f = 1MHz
MCC
Revision: A 2011/01/01
TM
Micro Commercial Components
www.mccsemi.com
2 of 4
MMBT4401
Maximum Power Dissipation vs
Ambient Temperature
PD(MAX) - (mW)
TA - (°C)
TO-92
SOT-23
0
200
400
600
800
050 100 150 200
Output Capacitance vs
Reverse Bias Voltage
Volts - (V)
pF
0
2
4
6
8
10
0.1 1.0 10
Ccb
f = 1MHz
MCC
Revision: A 2011/01/01
TM
Micro Commercial Components
www.mccsemi.com
3 of 4
MCC
Revision: A 2011/01/01
TM
Micro Commercial Components
www.mccsemi.com
4 of 4
3
Ordering Information :
***IMPORTANT NOTICE***
Micro Commercial Components Corp. reserves the right to make changes without further notice to any product herein to
make corrections, modifications , enhancements , improvements , or other changes . Micro Commercial Components
Corp . does not assume any liability arising out of the application or use of any product described herein; neither does it
convey any license under its patent rights ,nor the rights of others . The user of products in such applications shall assume all
risks of such use and will agree to hold Micro Commercial Components Corp . and all the companies whose products are
represented on our website, harmless against all damages.
***LIFE SUPPORT***
MCC's products are not authorized for use as critical components in life support devices or systems without the express written
approval of Micro Commercial Components Corporation.
***CUSTOMER AWARENESS***
Counterfeiting of semiconductor parts is a growing problem in the industry. Micro Commercial Components (MCC) is taking
strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. MCC strongly encourages
customers to purchase MCC parts either directly from MCC or from Authorized MCC Distributors who are listed by country on
our web page cited below. Products customers buy either from MCC directly or from Authorized MCC Distributors are genuine
parts, have full traceability, meet MCC's quality standards for handling and storage. MCC will not provide any warranty
coverage or other assistance for parts bought from Unauthorized Sources. MCC is committed to combat this global
problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized
distributors.
Device Packing
Part Number-TP
Tape&Reel;3Kpcs/Reel