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LMUN2237LT1 Datasheet(PDF) 1 Page - Leshan Radio Company

Part No. LMUN2237LT1
Description  Bias Resistor Transistors NPN Silicon Surface Mount Transistors with Monolithic Bias Resistor Network
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Maker  LRC [Leshan Radio Company]
Homepage  http://www.lrc.cn/
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LMUN2237LT1 Datasheet(HTML) 1 Page - Leshan Radio Company

   
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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
ESD Rating
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
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Total Device Dissipation
TA = 25°C
Derate above 25
°C
PD
230 (Note 1)
338 (Note 2)
1.8 (Note 1)
2.7 (Note 2)
mW
°C/W
Thermal Resistance –
Junction-to-Ambient
RθJA
540 (Note 1)
370 (Note 2)
°C/W
Thermal Resistance –
Junction-to-Lead
RθJL
264 (Note 1)
287 (Note 2)
°C/W
Junction and Storage
Temperature Range
TJ, Tstg
–55 to +150
°C
1. FR–4 @ Minimum Pad
2. FR–4 @ 1.0 x 1.0 inch Pad
PIN 3
COLLECTOR
(OUTPUT)
PIN 1
EMITTER
(GROUND)
PIN 2
BASE
(INPUT)
R1
R2
LESHAN RADIO COMPANY, LTD.
LMUN2237LT1
CASE 318–08, STYLE 6
SOT– 23 (TO–236AB)
Bias Resistor Transistors
NPN Silicon Surface Mount Transistors
with Monolithic Bias Resistor Network
LMUN2237LT1-1/4


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