
DDTD (LO-R1) U
NPN PRE-BIASED 500 mA SURFACE MOUNT TRANSISTOR
Features
• Epitaxial Planar Die Construction
• Complementary PNP Types Available (DDTB)
• Built-In Biasing Resistors
• Lead Free/RoHS Compliant (Note 2)
• "Green" Device, Note 3 and 4
Mechanical Data
• Case: SOT-323
• Case Material: Molded Plastic, "Green" Molding
Compound, Note 4. UL Flammability Classification
Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020C
• Terminals: Solderable per MIL-STD-202, Method 208
• Terminal Connections: See Diagram
• Lead Free Plating (Matte Tin Finish annealed over Alloy
42 leadframe).
• Marking Information: See Table Below & Page 3
• Ordering Information: See Page 3
• Weight: 0.006 grams (approximate)
P/N R1 (NOM) R2 (NOM) MARKING
DDTD122LU
DDTD142JU
DDTD122TU
DDTD142TU
0.22KΩ
0.47KΩ
0.22KΩ
0.47KΩ
10KΩ
10KΩ
OPEN
OPEN
N75
N76
N77
N78
A
G
H
K
J
C
B
M
L
ED
OUT
3
C
R1
B
R2
E
21
IN
Schematic and Pin Configuration
GND(0)
SOT-323
Dim Min Max
A 0.25 0.40
B 1.15 1.35
C 2.00 2.20
D 0.65 Nominal
E 0.30 0.40
G 1.20 1.40
H 1.80 2.20
J 0.0 0.10
K 0.90 1.00
L 0.25 0.40
M 0.10 0.18
0° 8°
α
All Dimensions in mm
Maximum Ratings @T
Characteristic Symbol Value Unit
Supply Voltage, (3) to (2)
Input Voltage, (1) to (2) DDTD122LU
DDTD142JU
Input Voltage, (2) to (1) DDTD122TU
DDTD142TU
Output Current All
Power Dissipation (Note 1)
Thermal Resistance, Junction to Ambient Air (Note 1)
Operating and Storage Temperature Range
Notes: 1. Mounted on FR4 PC Board with recommended pad layout at http://www.diodes.com/datasheets/ap02001.pdf.
2. No purposefully added lead.
3. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
4. Product manufactured with Date Code 0627 (week 27, 2006) and newer are built with Green Molding Compound. Product manufactured prior to
Date Code 0627 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
DS30398 Rev. 6 - 2
= 25°C unless otherwise specified
A
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1 of 3
VCC
VIN
V
EBO (MAX)
IC
Pd
R
θ
Tj, T
JA
STG
-5 to +6
-5 to +6
500 mA
200 mW
625
-55 to +150
50 V
5 V
°C/W
°C
DDTD (LO-R1) U
© Diodes Incorporated
V

Electrical Characteristics @T
= 25°C unless otherwise specified R1, R2 Types
A
Characteristic Symbol Min Typ Max Unit Test Condition
DDTD122LU
Input Voltage
DDTD142JU
DDTD122LU
DDTD142JU
Output Voltage
Input Current
DDTD122LU
DDTD142JU
Output Current
DC Current Gain
DDTD122LU
DDTD142JU
Gain-Bandwidth Product*
* Transistor - For Reference Only
Electrical Characteristics @T
= 25°C unless otherwise specified R1-Only, R2-Only Types
A
Characteristic Symbol Min Typ Max Unit Test Condition
Collector-Base Breakdown Voltage
Collector-Emitter Breakdown Voltage
Emitter-Base Breakdown Voltage DDTD122TU
DDTD142TU
Collector Cutoff Current
Emitter Cutoff Current
DDTD122TU
DDTD142TU
Collector-Emitter Saturation Voltage
DC Current Transfer Ratio
DDTD122TU
DDTD142TU
Gain-Bandwidth Product*
* Transistor - For Reference Only
DS30398 Rev. 6 - 2
V
l(off)
V
⎯ ⎯
l(on)
V
O(on)
0.3
0.3
⎯ ⎯
Il ⎯ ⎯
I
⎯ ⎯
O(off)
Gl
56
56
fT ⎯
50
40
5
⎯ ⎯
⎯
⎯
⎯ ⎯
100
100
⎯
BV
BV
BV
I
I
V
CE(sat)
hFE
CBO
CEO
EBO
CBO
EBO
fT
2 of 3
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2.0
2.0
28
13
0.5
V
VCC = 5V, IO = 100μA
VO = 0.3V, IO = 20mA
V
VO = 0.3V, IO = 20mA
IO/Il = 50mA/2.5mA
mA
VI = 5V
μA
VCC = 50V, VI = 0V
⎯ ⎯
0.3V V
⎯ ⎯ ⎯ VO = 5V, IO = 50mA
200
⎯ ⎯
⎯ ⎯
⎯ ⎯
⎯
250
250
200
MHz
⎯
0.5
0.5
0.5
0.3 V
600
600
⎯
VCE = 10V, IE = 5mA, f = 100MHz
V
IC = 50μA
V
IC = 1mA
IE = 50μA
V
IE = 50μA
μA
VCB = 50V
μA
VEB = 4V
IC = 50mA, IB = 2.5mA
⎯ IC = 5mA, VCE = 5V
MHz
VCE = 10V, IE = -5mA, f = 100MHz
DDTD (LO-R1) U
© Diodes Incorporated

250
200
N (mW)
150
A
DISSI
100
d
50
0
-50
050100150
T , AMBIENT TEMPERATURE ( C)
A
Fig. 1 Power Derating Curve
Ordering Information (Note 4 & 5)
°
Device
DDTD122LU-7-F
DDTD142JU-7-F
DDTD122TU-7-F
DDTD142TU-7-F
Notes: 5. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Packaging Shipping
SOT-323 3000/Tape & Reel
SOT-323 3000/Tape & Reel
SOT-323 3000/Tape & Reel
SOT-323 3000/Tape & Reel
Marking Information
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
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 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 Diodes Incorporated and all the companies whose products are represented on our website,
harmless against all damages.
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.
NXX
YM
NXX = Product Type Marking Code
See Page 1 Table
YM = Date Code Marking
Y = Year ex: T = 2006
M = Month ex: 9 = September
IMPORTANT NOTICE
LIFE SUPPORT
DS30398 Rev. 6 - 2
3 of 3
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DDTD (LO-R1) U
© Diodes Incorporated