The P25D21H-SSH-IT with FLASH SOP-8_150mil RoHS is an electronic part manufactured by PUYA. It is a small outline package (SOP) with 8 pins in a 150-mil pitch format. The RoHS certificate indicates that the product conforms to Restriction of Hazardous Substances directives concerning the reduction of most hazardous substances such as cadmium, lead, mercury, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDEs). The component contains an onboard memory which can store data and instructions permanently as well as retaining configuration registers. This memory is non-volatile, meaning that its contents are retained even when power is turned off. Additionally, it has Removable Disk Drive (RDD) technology, which allows users to easily access stored data without using a computer.