Semiconductor Components Industries, LLC, 2001
January, 2001 – Rev. 2
Publication Order Number:
MMUN2211LT1/D
741
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.
Simplifies Circuit Design
Reduces Board Space and 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 the13 inch/10,000 unit reel.
MAXIMUM RATINGS (TA = 25°C unless otherwise noted)
Rating
Symbol
Value
Unit
Collector-Base Voltage
VCBO
50
Vdc
Collector-Emitter Voltage
VCEO
50
Vdc
Collector Current
IC
100
mAdc
Total Power Dissipation @ TA = 25°C
(Note 1.) Derate above 25
°C
PD
*200
1.6
mW
mW/
°C
DEVICE MARKING AND RESISTOR VALUES
Device
Marking
R1(K)
R2(K)
MMUN2211LT1
A8A
10
MMUN2212LT1
A8B
22
MMUN2213LT1
A8C
47
MMUN2214LT1
A8D
10
47
MMUN2215LT1
A8E
10
∞
MMUN2216LT1
A8F
4.7
∞
MMUN2230LT1
A8G
1.0
MMUN2231LT1
A8H
2.2
MMUN2232LT1
A8J
4.7
MMUN2233LT1
A8K
4.7
47
MMUN2234LT1
A8L
22
47
MMUN2235LT1
A8M
2.2
47
MMUN2238LT1
A8R
2.2
∞
MMUN2241LT1
A8U
100
∞
1. Device mounted on a FR-4 glass epoxy printed circuit board using the
minimum recommended footprint.
http://onsemi.com
SOT–23
CASE 318
STYLE 6
MARKING DIAGRAM
A8x = Device Code
x
= (See Table)
PIN 3
COLLECTOR
(OUTPUT)
PIN 2
EMITTER
(GROUND)
PIN 1
BASE
(INPUT)
R1
R2
1
2
3
12
3
A8x
Preferred devices are recommended choices for future use
and best overall value.
Device
Package
Shipping
ORDERING INFORMATION
MMUN2211LT1
SOT–23
3000/Tape & Reel
MMUN2212LT1
SOT–23
3000/Tape & Reel
MMUN2213LT1
SOT–23
3000/Tape & Reel
MMUN2214LT1
SOT–23
3000/Tape & Reel
MMUN2215LT1
SOT–23
3000/Tape & Reel
MMUN2216LT1
SOT–23
3000/Tape & Reel
MMUN2230LT1
SOT–23
3000/Tape & Reel
MMUN2231LT1
SOT–23
3000/Tape & Reel
MMUN2232LT1
SOT–23
3000/Tape & Reel
MMUN2233LT1
SOT–23
3000/Tape & Reel
MMUN2234LT1
SOT–23
3000/Tape & Reel
MMUN2235LT1
SOT–23
3000/Tape & Reel
MMUN2238LT1
SOT–23
3000/Tape & Reel
MMUN2241LT1
SOT–23
3000/Tape & Reel