DS30400 Rev. 2 - 2
1 of 3
DDTB (LO-R1) U
www.diodes.com
Diodes Incorporated
DDTB (LO-R1) U
PNP PRE-BIASED 500 mA SOT-323
SURFACE MOUNT TRANSISTOR
Epitaxial Planar Die Construction
Complementary NPN Types Available
(DDTD)
Built-In Biasing Resistors
Lead Free Product
Features
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
A
M
J
L
E
D
B C
H
K
G
IN
GND
OUT
3
2
1
Mechanical Data
Case: SOT-323, Molded Plastic
Case material - UL Flammability Rating 94V-0
Moisture sensitivity: Level 1 per J-STD-020A
Terminals: Finish - Matte Tin (Note 1)
Solderable per MIL-STD-202, Method 208
Terminal Connections: See Diagram
Marking: Date Code and Marking Code
(See Diagrams & Page 2)
Weight: 0.006 grams (approx.)
Ordering Information (See Page 2)
(2) IN
R
1
R
2
GND (1)
OUT (3)
P/N
R1 (NOM) R2 (NOM)
MARKING
DDTB122LU
DDTB142JU
DDTB122TU
DDTB142TU
0.22K
W
0.47K
W
0.22K
W
0.47K
W
10K
W
10K
W
OPEN
OPEN
P75
P76
P77
P78
Characteristic
Symbol
Value
Unit
Supply Voltage, (3) to (1)
V
CC
-50
V
Input Voltage, (2) to (1)
DDTB122LU
DDTB142JU
V
IN
+5 to -6
+5 to -6
V
Input Voltage, (1) to (2)
DDTB122TU
DDTB142TU
V
EBO (MAX)
-5
V
Output Current All
I
C
-500
mA
Power Dissipation (Note 2)
P
d
200
mW
Thermal Resistance, Junction to Ambient Air (Note 2)
R
qJA
625
C/W
Operating and Storage and Temperature Range
T
j
, T
STG
-55 to +150
C
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
a
0
8
All Dimensions in mm
Note: 1. If lead-bearing terminal plating is required, please contact your Diodes Inc. sales representative for availability and minimum
order details.
2. Mounted on FR4 PC Board with recommended pad layout at http://www.diodes.com/datasheets/ap02001.pdf.
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DS30400 Rev. 2 - 2
2 of 3
DDTB (LO-R1) U
www.diodes.com
Characteristic
Symbol
Min
Typ
Max
Unit
Test Condition
Input Voltage
DDTB122LU
DDTB142JU
V
l(off)
-0.3
-0.3
V
V
CC
= -5V, I
O
= -100
mA
DDTB122LU
DDTB142JU
V
l(on)
-2.0
-2.0
V
V
O
= -0.3V, I
O
= -20mA
V
O
= -0.3V, I
O
= -20mA
Output Voltage
V
O(on)
-0.3V
V
I
O
/I
l
= -50mA/-2.5mA
Input Current
DDTB122LU
DDTB142JU
I
l
-28
-13
mA
V
I
= -5V
Output Current
I
O(off)
-0.5
mA
V
CC
= -50V, V
I
= 0V
DC Current Gain
DDTB122LU
DDTB142JU
G
l
56
56
V
O
= -5V, I
O
= -50mA
Gain-Bandwidth Product*
f
T
200
MHz
V
CE
= -10V, I
E
= -5mA,
f = 100MHz
Electrical Characteristics R1, R2 Types
@ T
A
= 25
C unless otherwise specified
* Transistor - For Reference Only
Characteristic
Symbol
Min
Typ
Max
Unit
Test Condition
Collector-Base Breakdown Voltage
BV
CBO
-50
V
I
C
= -50
mA
Collector-Emitter Breakdown Voltage
BV
CEO
-40
V
I
C
= -1mA
Emitter-Base Breakdown Voltage DDTB122TU
DDTB142TU
BV
EBO
-5
V
I
E
= -50
mA
I
E
= -50
mA
Collector Cutoff Current
I
CBO
-0.5
mA
V
CB
= -50V
Emitter Cutoff Current
DDTB122TU
DDTB142TU
I
EBO
-0.5
-0.5
mA
V
EB
= -4V
Collector-Emitter Saturation Voltage
V
CE(sat)
-0.3
V
I
C
= -50mA, I
B
= -2.5mA
DC Current Transfer Ratio
DDTB122TU
DDTB142TU
h
FE
100
100
250
250
600
600
I
C
= -5mA, V
CE
= -5V
Gain-Bandwidth Product*
f
T
200
MHz
V
CE
= -10V, I
E
= 5mA,
f = 100MHz
Electrical Characteristics R1-Only Types
@ T
A
= 25
C unless otherwise specified
* Transistor - For Reference Only
XXX = Product Type Marking Code
See Sheet 1 Diagrams
YM = Date Code Marking
Y = Year ex: P = 2003
M = Month ex: 9 = September
XXX
YM
Marking Information
Device
Packaging
Shipping
DDTB122LU-7
SOT-323
3000/Tape & Reel
DDTB142JU-7
SOT-323
3000/Tape & Reel
DDTB122TU-7
SOT-323
3000/Tape & Reel
DDTB142TU-7
SOT-323
3000/Tape & Reel
Ordering Information
(Note 3)
Month
Jan
Feb
March
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Code
1
2
3
4
5
6
7
8
9
O
N
D
Year
2002
2003
2004
2005
2006
2007
2008
2009
Code
N
P
R
S
T
U
V
W
Date Code Key
Notes: 1. If lead-bearing terminal plating is required, please contact your Diodes Inc. sales representative for availability and minimum
order details.
3. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
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