DTA144TT1
Preferred Device
Bias Resistor Transistor
PNP 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.
http://onsemi.com
PNP SILICON
BIAS RESISTOR
TRANSISTOR
PIN 3
COLLECTOR
(OUTPUT)
• Simplifies Circuit Design
• Reduces Board Space
• Reduces Component Count
• Moisture Sensitivity Level: 1
R1
R2
PIN 1
BASE
(INPUT)
• 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.
PIN 2
EMITTER
(GROUND)
• Available in 8 mm embossed tape and reel
Use the Device Number to order the 7 inch/3000 unit reel.
3
MAXIMUM RATINGS (T = 25°C unless otherwise noted)
A
1
2
Rating
Collector-Base Voltage
Collector-Emitter Voltage
Collector Current
Symbol
Value
50
Unit
Vdc
SC–59
CASE 318D
PLASTIC
V
CBO
V
CEO
50
Vdc
I
C
100
mAdc
MARKING DIAGRAM
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Total Device Dissipation
P
230 (Note 1.)
338 (Note 2.)
1.8 (Note 1.)
2.7 (Note 2.)
mW
D
6T
M
T = 25°C
A
Derate above 25°C
°C/W
°C/W
°C/W
°C
6T = Specific Device Code
M = Date Code
Thermal Resistance –
Junction-to-Ambient
R
540 (Note 1.)
370 (Note 2.)
θ
JA
JL
Thermal Resistance –
Junction-to-Lead
R
264 (Note 1.)
287 (Note 2.)
θ
ORDERING INFORMATION
Junction and Storage
Temperature Range
T , T
J
–55 to +150
stg
Device
DTA144TT1
Package
Shipping
3000/Tape & Reel
SC–59
DEVICE MARKING AND RESISTOR VALUES
Device
Marking
R1 (K)
R2 (K)
Shipping
3000/Tape & Reel
Preferred devices are recommended choices for future use
and best overall value.
DTA144TT1
6T
47
∞
1. FR–4 @ Minimum Pad
2. FR–4 @ 1.0 x 1.0 inch Pad
Semiconductor Components Industries, LLC, 2001
Publication Order Number:
April, 2001 – Rev. 0
DTA144TT1/D