The FZT690BTA is a NPN Silicon Darlington transistor in a SOT223 surface mount package. It is designed for general purpose amplifier and switching applications in electronic circuits. The key features of the FZT690BTA include a high DC current gain, low collector-emitter saturation voltage, and low noise. It has a maximum collector current rating of 2A and a continuous collector power dissipation of 1.25W. The transistor has a voltage rating of 100V and a maximum frequency of 100MHz. The SOT223 package offers easy mounting and is ideal for space-constrained applications. Overall, the FZT690BTA is a reliable and versatile discrete semiconductor component suitable for a wide range of electronic designs