LMUN2135LT1

LESHAN RADIO COMPANY, LTD. Bias Resistor Transistors PNP Silicon Surface Mount Transistors 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. Pb-Free Package is Available. LMUN2135LT1 3 1 2 SOT-23 (TO-236AB) PIN 1 BASE (INPUT) R1 R2 PIN 3 COLLECTOR (OUTPUT) PIN 2 EMITTER (GROUND) MAXIMUM RATINGS (TA = 25°C unless otherwise noted) Rating Symbol Value Collector-Base Voltage VCBO Collector-Emitter Voltage VCEO Collector Current IC THERMAL CHARACTERISTICS 50 50 100 Characteristic Symbol Max 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) Thermal Resistance – Junction-to-Ambient RθJA 540 (Note 1) 370 (Note 2) Thermal Re...