com EMD4DXV6T1, EMD4DXV6T5 Preferred Devices Dual Bias Resistor Transistors NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network (3) http://onsemi.
com (2) R1 Q1 Q2 R2 (4) R1 (5) (6) R2 (1) 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 EMD4DXV6T1 series, two complementary BRT devices are housed in the SOT−563 package...

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