FS2400 Fail-Safe System Basis Chips NXP Semiconductors FS2400 Fail-Safe System Basis Chips (SBCs) offer multiple power supplies developed to support secure car access utilising ultra-wideband (UWB), near-field communication (NFC) and BLUETOOTH® Low Energy (BLE) devices. The FS2400 family of automotive safety SBCs also conform to other small applications demanding low power and CAN FD communication.