The SMF150CA is an electronic part manufactured by Polytronics. It is a Transient Voltage Suppressors (TVS) with a 243V 167V 150V Surface Mount (SMF) design and RoHS compliant. The device is designed to protect vulnerable circuits from damage caused by transient voltage spikes, such as those resulting from lightning strikes. It has a high peak pulse power of 400W, a low clamping voltage of just 15.1V, and a low profile of just 0.4mm. Additionally, it is RoHS compliant to meet current environmental standards.