The P4200SA is a SMB RoHS-compliant discrete electronic part manufactured by SEMIWARE. It is generally used in transistor- and diode-based electronic circuits, and is designed to function as a switch or current regulator. This part may also be used to protect circuits from excessive currents or to buffer signals. Additionally, the P4200SA has both symmetric and asymmetric signal processing capabilities. The SMB RoHS designation indicates compliance with Restriction of Hazardous Substances (RoHS) compliance requirements, which require that the part must be free from certain hazardous materials and substances.