The SMM02040D5102BB300 is an N-Channel, JFET switch MOSFET from Vishay. This component is a single transistor that can be used to switch ON/OFF many different types of circuits. It features a very low threshold voltage of 1.5V, making it suitable for low-voltage applications. It has an operational temperature range from -55°C to 125°C, maximum current rating of 0.02A, and a maximum power dissipation of 0.2W. The device is lead free, RoHS compliant, and halogen free. It is available in a SOT-23 package that makes it easy to integrate into most applications.