Diodes DDTB (LO-R1) C User Manual
Ddtb (lo-r1) c, Features, Mechanical data

 
 
DDTB (LO-R1) C
DS30403 Rev. 6 - 2
1 of 3
www.diodes.com
DDTB (LO-R1) C
© Diodes Incorporated
PNP PRE-BIASED 500 mA SURFACE MOUNT TRANSISTOR
Features
•
Epitaxial Planar Die Construction
•
Complementary NPN Types Available (DDTD)
•
Built-In Biasing Resistors
•
Lead, Halogen and Antimony Free, RoHS Compliant 
"Green" Device (Notes 1 and 3) 
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 Table Below & Page 3
•
Ordering Information: See Page 3
•
Weight: 0.008 grams (approximate)
 
 
P/N
R1 (NOM) R2 (NOM) Type Code
DDTB122LC 
DDTB142JC 
DDTB122TC 
DDTB142TC 
0.22K
Ω
0.47K
Ω
0.22K
Ω
0.47K
Ω
10K
Ω
10K
Ω
OPEN 
OPEN 
P75 
P76 
P77 
P78 
 
 
 
 
 
SOT-23
A
E
J
L
N
E
W
P
D
UC
R
O
T
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
B
TOP VIEW
C
Maximum Ratings
@T
A
= 25°C unless otherwise specified
Characteristic
Symbol
Value
Unit
Supply Voltage, (3) to (2)
V
CC
-50
V
Input Voltage, (1) to (2)
DDTB122LC
DDTB142JC
V
IN
+5 to -6 
+5 to -6 
V
Input Voltage, (2) to (1)
DDTB122TC
DDTB142TC
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
θJA
625
°C/W
Operating and Storage Temperature Range
T
J
, T
STG
-55 to +150
°C
Notes:
1. No purposefully added lead. Halogen and Antimony Free. 
2. Mounted on FR4 PC Board with recommended pad layout at http://www.diodes.com/datasheets/ap02001.pdf. 
3. 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 Sb
2
O
3
Fire Retardants.
 
 
 
 
 
 
 
 
 
 
 
Schematic and Pin Diagram
R1
OUT
B
C
E
R2
3
2
1
IN
GND(+)
M
H
G
D
K
