BUY S101 https://www.utsource.net/itm/p/1032601.html

S101 is an 8-pin SOP (Small Outline Package) NEDI (Non-Erasable Device Identification) integrated circuit. It is a non-volatile memory device that is used to store information such as serial numbers, product codes, and other data. The S101 features a low power consumption, a wide operating temperature range, and a high endurance cycle. It is also resistant to ESD (electrostatic discharge) and is RoHS compliant. The S101 is commonly used in automotive, industrial, and consumer electronics applications. It can be used to store product codes, serial numbers, and other data that needs to be stored securely and reliably. It is also used in medical devices, security systems, and other applications where data needs to be stored securely. (For reference only)