Mechanical Data
Maximum Ratings @ 25oC Unless Otherwise Specified
Charateristic Symbol Value Unit
Collector-Emitter Voltage 2N4123
2N4124 VCEO
30
25 V
Collector-Base Volta
g
e 2N4123
2N4124 VCBO
40
30 V
Emitter-Base Volta
g
e 2N4123
2N4124 VEBO 5 V
Collector Current(DC) IC200 mA
Power Dissipation@TA
=25oCPd
625
5.0
mW
mW/oC
Power Dissipation@TC=25oCPd
1.5
12
W
mW/oC
Thermal Resistance, Junction to
Ambient Air 200 oC/W
Thermal Resistance, Junction to
Case 83.3 oC/W
Operating & Storage Temperature T
j
, TSTG -55~150 oC
2N4123
2N4124
NPN Silicon General
Purpose Transistor
625mW


Revision: D 2013/01/01
omponents
20736 Marilla Street Chatsworth

 !"#
$%  !"#
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Micro Commercial Components
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• Through Hole TO-92 Package
• Lead Free Finish/RoHS Compliant ("P" Suffix designates
RoHS Compliant. See ordering information)
• Capable of 625mWatts of Power Dissipation
• Epoxy meets UL 94 V-0 flammability rating
• Moisure Sensitivity Level 1
Features
• Case: TO-92, Molded Plastic
• Marking: Part Number
MCC
INCHES MM
DIM MIN MAX MIN MAX NOTE
A .175 .185 4.45 4.70
B .175 .185 4.45 4.70
C .500 --- 12.70 ---
D .016 .020 0.41 0.63
E .135 .145 3.43 3.68
.095.1052.422.67 Straight Lead
AE
B
C
D
G
EBC
EBC
BENT LEADSTRAIGHT LEAD
BULK PACK AMMO PACK
* For ammo packing detailed specification, click here to visit our website
of product packaging for details.
.173.2204.405.60 Bent Lead
G
TO-92
DIMENSIONS
Halogen free available upon request by adding suffix "-HF"
•
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Max Unit
OFF CHARACTERISTICS
Collector–Emitter Breakdown Voltage(1)
(IC = 1.0 mAdc, IE= 0) 2N4123
2N4124
V(BR)CEO 30
25
—
—
Vdc
Collector–Base Breakdown Voltage
(IC = 10
m
Adc, IE = 0) 2N4123
2N4124
V(BR)CBO 40
30—
—
Vdc
Emitter–Base Breakdown Voltage
(IE = 10
m
Adc, IC = 0) V(BR)EBO 5.0 —Vdc
Collector Cutoff Current
(VCB = 20 Vdc, IE = 0)
ICBO —50
nAdc
Emitter Cutoff Current
(VEB = 3.0 Vdc, IC = 0)
IEBO —50
nAdc
ON CHARACTERISTICS(1)
DC Current Gain
(IC =2.0 mAdc, VCE = 1.0 Vdc)
(IC = 50 mAdc, VCE = 1.0 Vdc)
hFE 50
120 —
—
Collector–Emitter Saturation Voltage
(IC = 50mAdc, IB = 5.0 mAdc)VCE(sat) —0.3
Vdc
Base–Emitter Saturation Voltage
(IC = 50mAdc, IB = 5.0 mAdc)
VBE(sat) —0.95
Vdc
2N4123
2N4124
2N4124
2N4123
60
25
SMALL-SIGNAL CHARACTERISTICS
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2N4123
2N4124
MCC
Revision: D 2013/01/01
TM
Micro Commercial Components
www.mccsemi.com
2 of 6
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()/)0()1#µ)233(%4
f, FREQUENCY (kHz)
4
6
8
10
12
2
0.1 RS, SOURCE RESISTANCE (k
Ω
)
0
NF, NOISE FIGURE (dB)
1 2 4 10 20 40
0.2 0.4
0100
4
6
8
10
12
2
14
0.1 1.0 2.0 4.0 10 20 40
0.2 0.4 10
0
NF, NOISE FIGURE (dB)
f = 1 kHz IC = 1 mA
IC = 0.5 mA IC = 50
m
A
IC = 100
m
A
SOURCE RESISTANCE = 200
W
IC = 1 mA
SOURCE RESISTANCE = 200
W
IC = 0.5 mA
SOURCE RESISTANCE = 500
W
IC = 100
m
A
SOURCE RESISTANCE = 1 k
Ω
IC = 50
m
A
IC, COLLECTOR CURRENT (mA)
70
100
200
300
50
IC, COLLECTOR CURRENT (mA)
h , OUTPUT ADMITTANCE ( mhos)
30
100
50
5
10
20
oe
0.1 0.2 1.0 2.0 5.0 1
0
0.5
2
1
0.1 0.2 1.0 2.0 5.0 10
0.5
m
h
fe
, CURRENT GAIN
REVERSE BIAS VOLTAGE (VOLTS)
2.0
3.0
5.0
7.0
10
1.00.1 IC, COLLECTOR CURRENT (mA)
200
1.0
TIME (ns)
100
50
30
20
70
10.0
5.0
7.0
2.0 3.0 5.0 7.0 10 20 30 50 70 100 200
CAPACITANCE (pF)
1.0 2.0 3.0 5.0 7.0 10 20 30 40
0.2 0.3 0.5 0.7
Cibo
Cobo
ts
td
tr
tf
VCC = 3 V
IC/IB = 10
VEB(off) = 0.5 V
Figure 1. Capacitance Figure 2. Switching Times
Figure 3. Frequency Variations Figure 4. Source Resistance
Figure 5. Current Gain Figure 6. Qutput Admittance
2N4123
2N4124
MCC
Revision: D 2013/01/01
TM
Micro Commercial Components
www.mccsemi.com
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IC, COLLECTOR CURRENT (mA) IC, COLLECTOR CURRENT (mA)
2.0
3.0
5.0
7.0
10
1.0
0.1 0.2 1.0 2.0 5.0
0.5 1
0
0.5
0.7
2.0
5.0
10
20
1.0
0.2
0.5
h , VOLTAGE FEEDBACK RATIO (X 10 )
re
hie
0.1 0.2 1.0 2.0 5.0 10
0.5
–4
, INPUT IMPEDANCE (k )
Ω
IC, COLLECTOR CURRENT (mA)
0.3
0.5
0.7
1.0
2.0
0.2
0.1
h , DC CURRENT GAIN (NORMALIZED)
0.5 2.0 3.0 10 50 70
0.2 0.3
0.1 100
1.00.7 200
30205.0 7.0
FE
VCE = 1 V
TJ = +125
°
C
+25
°
C
–55
°
C
IB, BASE CURRENT (mA)
0.4
0.6
0.8
1.0
0.2
0.1
V , COLLECTOR EMITTER VOLTAGE (VOLTS)
0.5 2.0 3.0 100.2 0.3
01.00.7 5.0 7.0
CE
IC = 1 mA
TJ = 25
°
C
0.070.050.030.020.01
10 mA 30 mA 100 mA
Figure 7. Input Impedance
Figure 9. DC Current Gain
Figure 8. Voltage Feedback Ratio
Figure 10. Collector Saturation Region
2N4123
2N4124
MCC
Revision: D 2013/01/01
TM
Micro Commercial Components
www.mccsemi.com
4 of 6
IC, COLLECTOR CURRENT (mA)
0.4
0.6
0.8
1.0
1.2
0.2
IC, COLLECTOR CURRENT (mA)
V, VOLTAGE (VOLTS)
1.0 2.0 5.0 10 20 50
0100
–0.5
0
0.5
1.0
0 60 80 120 140 160 180
20 40 100 20
0
–1.0
–1.5
–2.0
200
TJ = 25
°
CVBE(sat) @ IC/IB = 10
VCE(sat) @ IC/IB = 10
VBE @ VCE = 1 V
+25
°
C to +125
°
C
–55
°
C to +25
°
C
+25
°
C to +125
°
C
–55
°
C to +25
°
C
q
VC for VCE(sat)
q
VB for VBE(sat)
V, TEMPERATURE COEFFICIENTS (mV/ C)
°θ
Figure 11. "ON" Voltages Figure 12. Temperature Coefficients
2N4123
2N4124
MCC
Revision: D 2013/01/01
TM
Micro Commercial Components
www.mccsemi.com
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Part Number-BP Bulk: 100Kpcs/Carton
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-AP Ammo Packing: 20Kpcs/Carton
3