The Infineon IRLML5203TRPBF is a 5A, 40V, low side MOSFET. It is in a SOT-23 package, making it ideal for small size and low power applications. It is designed for switching applications in both DC and AC circuits with an on-state resistance as low as 19 milliohms and an on-state gate charge of 4 nanocoulombs. It features current limitation and temperature protection and can handle maximum operating temperatures up to 150°C.