MMBTA28
NPN SURFACE MOUNT DARLINGTON TRANSISTOR
Features
• Epitaxial Planar Die Construction
• Ideal for Low Power Amplification and Switching
• High Current Gain
• Lead, Halogen and Antimony Free, RoHS Compliant
"Green" Device (Notes 3 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
• Terminal Connections: See Diagram
• Terminals: Solderable per MIL-STD-202, Method 208
• Lead Free Plating (Matte Tin Finish annealed over Alloy
42 leadframe).
• 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
C
BE
A
E
JL
TOP VIEW
M
BC
H
GD
K
C
BE
Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Collector-Base Voltage VCBO 80 V
Collector-Emitter Voltage VCEO 80 V
Emitter-Base Voltage VEBO 12 V
Collector Current - Continuous IC 500 mA
Power Dissipation (Note 1) PD 300 mW
Thermal Resistance, Junction to Ambient (Note 1) RθJA 417 °C/W
Operating and Storage and 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 2)
Collector-Base Breakdown Voltage V(BR)CBO 80 ⎯ V IC = 100μA IE = 0
Emitter-Base Breakdown Voltage V(BR)EBO 12 ⎯ V IE = 100μA IC = 0
Collector-Emitter Breakdown Voltage V(BR)CEO 80 ⎯ V IC = 100μA IB = 0
ICBO ⎯ 100 nA VCB = 60V, IE = 0
Collector Cutoff Current ICES ⎯ 500 nA
VCE = 10V
Emitter Cutoff Current IEBO ⎯ 100 nA VEB = 10V, IC = 0
ON CHARACTERISTICS (Note 2)
DC Current Gain hFE 10,000
10,000 ⎯ ⎯ IC = 10mA, VCE = 5.0V
IC = 100mA, VCE = 5.0V
Collector-Emitter Saturation Voltage VCE(SAT) ⎯ 1.5 V IC = 100mA, IB = 100μA
Base-Emitter Saturation Voltage VBE(SAT) ⎯ 2.0 V IC = 100mA, VCE = 5.0V
SMALL SIGNAL CHARACTERISTICS
Output Capacitance Cobo 8.0 Typical pF VCB = 10V, f = 1.0MHz, IE = 0
Input Capacitance Cibo 15 Typical pF VEB = 0.5V, f = 1.0MHz, IC = 0
Current Gain-Bandwidth Product fT 125 ⎯ MHz VCE = 5.0V, IC = 10mA,
f = 100MHz
Notes: 1. Device mounted on FR-4 PCB, 1.6x1.6x0.06 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. Short duration pulse test used to minimize self-heating effect.
3. No purposefully added lead. Halogen and Antimony Free.
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.
DS30367 Rev. 9 - 2 1 of 3
www.diodes.com MMBTA28
© Diodes Incorporated
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)
Fi g. 1 Max Pow er Di ssipa t i o n vs.
Am bi ent Tem per at ure
A
150
200
250
300
350
400
0
0.1
0
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
110100 1,000
V,
C
O
LLE
C
T
O
R
-EMI
T
T
E
R
SA
T
U
R
A
T
I
O
N
VOLTAGE (V)
CE(SAT)
I , COLLECTOR CURRENT (mA)
Fig. 2 Typical Collector-Emitter Saturation V oltage
vs. C ollecto r Cu r r ent
C
T = 150°C
A
T = -50°C
A
I
I
C
B
= 1000
T = 25°C
A
0.4
0.3
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
0.1 1 10 100
V , BASE-EMI
T
T
E
R
V
O
L
T
A
G
E (V)
BE(ON)
I , COLLECTOR CURRENT (mA)
Fig. 3 Typical Base-Emitter V oltage
vs. Collector Current
C
T = 25°C
A
V = 5V
CE
T = -50°C
A
T = 150°C
A
110100
1,000
100
1,000
10,000
1,000,000
100,000
I , COLLECTOR CURRENT (mA)
Fig. 4 Typical DC Current Gain
vs. C ollector Cu r r ent
C
h, D
C
C
U
R
R
E
N
T
G
AI
N
FE
V= 5V
CE
T = 150°C
A
T = 25°C
A
T = -50°C
A
110
100
1
10
100
1,000
COLLECTOR CURRENT I (mA)
Fig. 5 Typical Gain Bandwidth Product
vs. Col lecto r Cu r re nt
C
f,
G
AIN BANDWID
T
H
P
R
O
D
U
C
T
(M
H
z)
T
V = 5V
CE
DS30367 Rev. 9 - 2 2 of 3
www.diodes.com MMBTA28
© Diodes Incorporated
Ordering Information (Note 5)
Part Number Packaging Shipping
MMBTA28-7-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
K6R
YM
K6R = Product Type Marking Code
YM = Date Code Marking
Y = Year ex: T = 2006
M = Month ex: 9 = September
Date Code Key
Year 2006 2007 2008 2009 2010 2011 2012
Code 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.
DS30367 Rev. 9 - 2 3 of 3
www.diodes.com MMBTA28
© Diodes Incorporated
