MMBT123S
1A NPN SURFACE MOUNT TRANSISTOR
Features
• Epitaxial Planar Die Construction
• Ideal for Medium Power Amplification and Switching
• Lead, Halogen and Antimony Free, RoHS Compliant
"Green" Device (Notes 2 and 4)
Mechanical Data
• Case: SOT-23
• Case Material: Molded Plastic. UL Flammability
Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020D
• Terminals: Solderable per MIL-STD-202, Method 208
• Lead Free Plating (Matte Tin Finish annealed over
Alloy 42 leadframe).
• Terminal Connections: See Diagram
• Marking Information: See Page 3
• Ordering Information: See Page 3
• Weight: 0.008 grams (approximate)
SOT-23
Dim Min Max
A 0.37 0.51
B 1.20 1.40
C 2.30 2.50
D 0.89 1.03
E 0.45 0.60
G 1.78 2.05
H 2.80 3.00
J 0.013 0.10
K 0.903 1.10
L 0.45 0.61
M 0.085 0.180
α 0° 8°
All Dimensions in mm
A
DS30292 Rev. 7 - 2 1 of 3
www.diodes.com
MMBT123S
© Diodes Incorporated
Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Collector-Base Voltage VCBO 45 V
Collector-Emitter Voltage VCEO 18 V
Emitter-Base Voltage VEBO 5 V
Collector Current - Continuous IC 1 A
Power Dissipation (Note 1) PD 300 mW
Thermal Resistance, Junction to Ambient (Note 1) RθJA 417 °C/W
Operating and Storage Temperature Range TJ, TSTG -55 to +150 °C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Max Unit Test Condition
OFF CHARACTERISTICS (Note 3)
Collector-Base Breakdown Voltage V(BR)CBO 45 ⎯ V IC = 100μA, IE = 0
Collector-Emitter Breakdown Voltage V(BR)CEO 18 ⎯ V IC = 1mA, IB = 0
Emitter-Base Breakdown Voltage V(BR)EBO 5 ⎯ V IE = 100μA, IC = 0
Collector Cutoff Current ICBO ⎯ 1 μA VCB = 40V, IE = 0
Emitter Cutoff Current IEBO ⎯ 1 μA VEB = 4V, IC = 0
ON CHARACTERISTICS (Note 3)
DC Current Gain hFE 150 800 ⎯ IC = 100mA, VCE = 1V
Collector-Emitter Saturation Voltage VCE(SAT) ⎯ 0.5 V IC = 300mA, IB = 30mA
SMALL SIGNAL CHARACTERISTICS
Output Capacitance Cobo ⎯ 8 pF VCB = 10V, f = 1.0MHz, IE = 0
Current Gain-Bandwidth Product fT 100 ⎯ MHz VCB = 10V, IE = 50mA,
f = 100MHz
Notes: 1. Device mounted on FR-4 PCB, 1 inch x 0.85 inch x 0.062 inch; pad layout as shown on Diodes Inc. suggested pad layout
document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
2. No purposefully added lead. Halogen and Antimony Free.
3. Short duration pulse test used to minimize self-heating effect.
4. Product manufactured with Data Code V9 (week 33, 2008) and newer are built with Green Molding Compound. Product manufactured prior to Date Code
V9 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
E
B
C
E
JL
TOP VIEW
M
BC
H
GD
K
C
BE
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0
50
100
25 50 75 100 125 150 175 200
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
T , AMBIENT TEMPERA TURE (°C)
Fig. 1, Max Power Dissipation vs
Am bi ent Tem peratu re
A
150
200
250
300
350
400
0
Note 1
1
1000
100
0.0001 0.001 0.01 110
0.1
h, D
C
C
U
R
R
E
N
T
G
AI
N
FE
I , COLLECTOR CURRENT (A)
Fig. 2, T y pical DC Current Gain vs
Collector Current
C
V = 1.0V
CE
1
100
10
0.1 110 100
C
,
O
U
T
P
U
T
C
A
P
A
C
I
T
A
N
C
E (p
F
)
OBO
V , COLLECTOR-BASE VOLTAGE (V)
Fig. 3, Output Capacitance vs.
Collector-Base Voltage
CB
f = 1MHz
1
10
1000
100
0.0001 0.001 0.01 0.1 1 10
V,
C
O
LLE
C
T
O
R
-EMI
T
T
E
R
SATURATION VOLTAGE ( mV )
CE (SAT)
I , COLLECTOR CURRENT (A)
Fig. 4, Collector Saturation Voltage vs
Collector Current
C
DS30292 Rev. 7 - 2 2 of 3
www.diodes.com
MMBT123S
© Diodes Incorporated
Ordering Information (Note 5)
DS30292 Rev. 7 - 2 3 of 3
www.diodes.com
MMBT123S
© Diodes Incorporated
Device Packaging Shipping
MMBT123S-7-F SOT-23 3000/Tape & Reel
Notes: 5. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
K6D = Product Type Marking Code
YM = Date Code Marking
Y = Year ex: T = 2006
M = Month ex: 9 = September
Date Code Key
Year 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Code N P R S T U V W X Y Z
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Code 1 2 3 4 5 6 7 8 9 O N D
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to any product herein. Diodes Incorporated does not assume an y 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 Diodes Incorporated and all the companies whose products are represented on our website,
harmless against all damages. LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written
approval of the President of Diodes Incorporated.
