Semiconductor Components Industries, LLC, 2002
May, 2002 – Rev. 1
1 Publication Order Number:
DTC144TT1/D
DTC144TT1
Preferred Device
Bias Resistor Transistor
NPN Silicon Surface Mount Transistor
with Monolithic Bias Resistor Network
This new series of digital transistors is designed to replace a single
device and its external resistor bias network. The BRT (Bias Resistor
Transistor) contains a single transistor with a monolithic bias network
consisting of two resistors; a series base resistor and a base–emitter
resistor. The BRT eliminates these individual components by
integrating them into a single device. The use of a BRT can reduce
both system cost and board space. The device is housed in the SC–59
package which is designed for low power surface mount applications.
• Simplifies Circuit Design
• Reduces Board Space
• Reduces Component Count
• Moisture Sensitivity Level: 1
• ESD Rating – Human Body Model: Class 1
ESD Rating – Machine Model: Class B
• The SC–59 package can be soldered using wave or reflow. The
modified gull–winged leads absorb thermal stress during soldering
eliminating the possibility of damage to the die.
• Available in 8 mm embossed tape and reel
Use the Device Number to order the 7 inch/3000 unit reel.
MAXIMUM RATINGS (T
A
= 25°C unless otherwise noted)
Rating
Symbol Value Unit
Collector-Base Voltage V
CBO
50 Vdc
Collector-Emitter Voltage V
CEO
50 Vdc
Collector Current I
C
100 mAdc
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Total Device Dissipation
T
A
= 25°C
Derate above 25°C
P
D
230 (Note 1.)
338 (Note 2.)
1.8 (Note 1.)
2.7 (Note 2.)
mW
°C/W
Thermal Resistance –
Junction-to-Ambient
R
θ
JA
540 (Note 1.)
370 (Note 2.)
°C/W
Thermal Resistance –
Junction-to-Lead
R
θ
JL
264 (Note 1.)
287 (Note 2.)
°C/W
Junction and Storage
Temperature Range
T
J
, T
stg
–55 to +150 °C
DEVICE MARKING AND RESISTOR VALUES
Device Marking R1 (K) R2 (K) Shipping
DTC144TT1 8T 47 ∞ 3000/Tape & Reel
1. FR–4 @ Minimum Pad
2. FR–4 @ 1.0 x 1.0 inch Pad
SC–59
CASE 318D
STYLE 1
Preferred devices are recommended choices for future use
and best overall value.
NPN SILICON
BIAS RESISTOR
TRANSISTOR
3
2
1
PIN 3
COLLECTOR
(OUTPUT)
PIN 1
EMITTER
(GROUND)
PIN 2
BASE
(INPUT)
R
1
R
2
MARKING DIAGRAM
8T = Specific Device Code
M = Date Code
8T M
Device Package Shipping
ORDERING INFORMATION
DTC144TT1 SC–59 3000/Tape & Reel
http://onsemi.com
