●Description of Change
■Silicon Labs announces an End of Life (EOL) and Last Time Buy (LTB) for Si4021, Si4320, Si4420 and Si4421 EZRadios.
■Existing customers may place LTB orders per the key dates above and guidelines listed in this EOL form.
■All customer orders placed after the EOL Issue Date will be Non-Cancellable and Non-Returnable (NCNR). These orders will need to have a Customer Requested Delivery Date (CRD) before the EOL Effective Date. As of this EOL Issue Date, Silicon Labs will no longer accept customer orders with a CRD beyond the EOL Effective Date.
●Reason for Change
■The foundry that supplies the wafers used to manufacture the Si4021, Si4320, Si4420 and Si4421 devices has announced an End of Life (EOL) of the wafers due to obsolescence of critical materials required for the affected technologies. This impacts Silicon Labs ability to manufacture these devices. Please note the non-standard time window for placing LTB orders (~2months instead of 6 months), which is primarily driven by the foundry.
■CUSTOMER ACTION REQUIRED: The shortened LTB date requires immediate attention from customers to work with Silicon Labs Sales representatives to place orders before 31 July 2024.

Brand of Product：	Silicon Labs
Part#：	Si4021 、 Si4320 、 Si4420 、 Si4421 、 SI4021-A1-FT 、 SI4021-A1-FTR 、 SI4320-J1-FT 、 SI4320-J1-FTR 、 SI4420-D1-FT 、 SI4420-D1-FTR 、 SI4421-A0-ZT2 、 SI4421-A0-ZT2R 、 SI4421-A1-FT 、 SI4421-A1-FTR 、 SI4421-A1-FT1 、 SI4421-A1-FT1R 、 SI4063-C2A-GM 、 SI4063-C2A-GMR 、 SI4362-C2A-GM 、 SI4362-C2A-GMR 、 SI4463-C2A-GM 、 SI4463-C2A-GMR More Part#
Product Category：	More
Application：	More
Data Type：	PCN/EOL More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	May 30, 2024
Version Number：
Data Encoding：	2024-05-30-1543;2405301543
Data Size：	762 KB