The 2SD1815SR-Q is a versatile NPN Bipolar Junction Transistor (BJT) from Diotec, available through Supreme Components International, an authorised distributor. This transistor is designed for through-hole mounting in a SOT-89 package. Key specifications include a collector-emitter voltage (Vceo) of 50V, a continuous collector current (Ic) of 3A, and a power dissipation (Pd) of 1.3W. The 2SD1815SR-Q is suitable for a wide range of applications, including switching circuits, amplification stages, and general-purpose circuit designs. Its robust design and reliable performance make it a popular choice for engineers and hobbyists alike. Supreme Components International is an authorised distributor of electronic components, ensuring quality and authenticity.