MMUN2211LT1 Series
Preferred Devices
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
SOT-23 package which is designed for low power surface mount
applications.
http://onsemi.com
PIN 3
COLLECTOR
(OUTPUT)
R1
R2
PIN 1
BASE
(INPUT)
PIN 2
EMITTER
(GROUND)
Features
• Simplifies Circuit Design
• Reduces Board Space and Component Count
• Pb−Free Packages are Available
MARKING DIAGRAM
MAXIMUM RATINGS (T = 25°C unless otherwise noted)
A
A8x M G
SOT−23
CASE 318
STYLE 6
G
Rating
Collector-Base Voltage
Collector-Emitter Voltage
Collector Current
Symbol
Value
50
Unit
Vdc
1
V
CBO
CEO
V
50
Vdc
A8x = Specific Device Code
I
C
100
mAdc
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Total Device Dissipation
P
246 (Note 1)
400 (Note 2)
1.5 (Note 1)
2.0 (Note 2)
mW
D
T = 25°C
A
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Derate above 25°C
°C/W
°C/W
Thermal Resistance, Junction-to-Ambient
Thermal Resistance, Junction-to-Lead
R
508 (Note 1)
311 (Note 2)
q
JA
Preferred devices are recommended choices for future use
and best overall value.
R
174 (Note 1)
208 (Note 2)
°C/W
°C
q
JL
Junction and Storage Temperature
Range
T , T
J
−55 to +150
stg
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
1. FR−4 @ minimum pad
2. FR−4 @ 1.0 x 1.0 inch pad
© Semiconductor Components Industries, LLC, 2005
Publication Order Number:
August, 2005 − Rev. 7
MMUN2211LT1/D