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 SOT-23 package which is
designed for low power surface mount applications.
∗
Simplifies Circuit Design
∗
Reduces Board Space
∗
Reduces Component Count
∗
The SOT-23 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.
Replace “T1” with “T3” in the Device Number to order
the 13 inch/10,000 unit reel.
PIN1
base
(Input)
R1
R2
PIN2
Emitter
(Ground)
PIN3
Collector
(output)
MMUN2211RLT1
MMUN2212RLT1
MMUN2213RLT1
MMUN2214RLT1
MMUN2215RLT1
MMUN2230RLT1
MMUN2231RLT1
MMUN2232RLT1
MMUN2233RL34
NPN SILICON
BIAS RESISTOR
TRANSISTOR
3
1
2
CASE 318–08, STYLE 6
SOT– 23 (TO–236AB)
MAXIMUM RATINGS
(T
A
= 25°C unless otherwise noted)
Rating
Collector-Base Voltage
Collector-Emitter Voltage
Collector Current
Total Power Dissipation @ T
A
= 25°C
(1)
Derate above 25°C
Symbol
V
CBO
V
CEO
I
C
P
D
Value
50
50
100
200
1.6
Value
625
–65 to +150
260
10
R1 (K)
10
22
47
10
10
4.7
Unit
Vdc
Vdc
mAdc
mW
mW/°C
Unit
°C/W
°C
°C
Sec
R2 (K)
10
22
47
47
THERMAL CHARACTERISTICS
Rating
Thermal Resistance — Junction-to-Ambient (surface mounted)
Operating and Storage Temperature Range
Maximum Temperature for Soldering Purposes
Time in Solder Bath
Symbol
R
θJA
T
J
, T
stg
T
L
DEVICE MARKING AND RESISTOR VALUES
Device
MMUN2211RLT1
MMUN2212RLT1
MMUN2213RLT1
MMUN2214RLT1
MMUN2215RLT1
(2)
MMUN2216RLT1
(2)
Marking
A8A
A8B
A8C
A8D
A8E
A8F
MMUN2230RLT1
(2)
A8G
1
(2)
A8H
2.2
MMUN2231RLT1
(2)
MMUN2232RLT1
A8J
4.7
(2)
MMUN2233RLT1
A8K
4.7
MMUN2234RLT1
(2)
A8L
22
1. Device mounted on a FR-4 glass epoxy printed circuit board using the minimum recommended footprint.
2. New devices. Updated curves to follow in subsequent data sheets.
1
2.2
4.7
47
47
8 8
Q2–1/8
ETL [ E-TECH ELECTRONICS LTD ]
