S345LBF with New Quadratic Unclassified Data SMBF RoHS manufactured by Pingwei is a type of electronic component, typically used in the assembly of electronic circuits. It is a 4-pin device that utilizes a Quadratic Unclassified Data (QUD) technology. It is designed to provide high performance and reliability in any electrically sensitive environment. It is manufactured in RoHS compliant form, which is a standard or global effort to ensure that hazardous materials are not present in the electronic component manufacturing process. The S345LBF is constructed with a new SMBF dielectric film to help increase its reliability. It has a high self-regulation and self-correction features, which are useful for applications requiring high levels of accuracy. It is also resistant to vibration and shock, making it suitable for use in harsh environments. It is a simple to use, easy to install component making it ideal for hobbyists and OEM's alike.