UMC2NT1, UMC3NT1,
UMC5NT1
Preferred Devices
Dual Common
Base-Collector Bias
Resistor Transistors
http://onsemi.com
NPN and PNP Silicon Surface Mount
Transistors with Monolithic Bias
Resistor Network
3
2
1
R1
R2
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. These digital transistors are
designed to replace a single device and its external resistor bias
network. The BRT eliminates these individual components by
integrating them into a single device. In the UMC2NT1 series, two
complementary BRT devices are housed in the SOT–353 package
which is ideal for low power surface mount applications where board
space is at a premium.
Q2
R2
Q1
R1
4
5
MARKING
DIAGRAM
• Simplifies Circuit Design
• Reduces Board Space
5
4
• Reduces Component Count
• Available in 8 mm, 7 inch/3000 Unit Tape and Reel.
Ux
SC–88A/SOT–323
CASE 419A
STYLE 6
MAXIMUM RATINGS (T = 25°C unless otherwise noted, common for Q
A
1
1
2
3
and Q , – minus sign for Q (PNP) omitted)
2
1
Ux = Device Marking
= 2, 3 or 5
Rating
Collector-Base Voltage
Symbol
Value
50
Unit
x
V
CBO
V
CEO
Vdc
Vdc
Collector-Emitter Voltage
Collector Current
50
I
C
100
mAdc
ORDERING INFORMATION
THERMAL CHARACTERISTICS
Device
Package
SOT–323
SOT–323
SOT–323
Shipping
Thermal Resistance – Junction-to-Ambient
(surface mounted)
R
833
°C/W
°C
θ
JA
UMC2NT1
UMC3NT1
UMC5NT1
3000/Tape & Reel
3000/Tape & Reel
3000/Tape & Reel
Operating and Storage Temperature
Range
T , T
J
–65 to
+150
stg
Total Package Dissipation
P
*150
mW
D
@ T = 25°C (Note 1.)
A
DEVICE MARKING AND RESISTOR VALUES
Transistor 1 – PNP
Preferred devices are recommended choices for future use
and best overall value.
Transistor 2 – NPN
R1 (K)
R2 (K)
R1 (K)
R2 (K)
Device
Marking
UMC2NT1
UMC3NT1
UMC5NT1
U2
U3
U5
22
10
4.7
22
10
10
22
10
47
22
10
47
1. Device mounted on a FR-4 glass epoxy printed circuit board using the
minimum recommended footprint.
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
April, 2001 – Rev. 1
UMC2NT1/D