https://community.nxp.com/t5/Other-NXP-Products/PCF8583T-5-518-is-it-original/m-p/2317215#M31209 <P>Our company purchased the PCF8583T/5,518 from China. It wasn't purchased from an official distributor because it's EOL. Based on the attached documents, can we determine that this item is not genuine?</P> Thu, 12 Feb 2026 14:41:00 GMT PSkorupa 2026-02-12T14:41:00Z https://community.nxp.com/t5/Other-NXP-Products/PCF8583T-5-518-is-it-original/m-p/2317215#M31209 <P>Our company purchased the PCF8583T/5,518 from China. It wasn't purchased from an official distributor because it's EOL. Based on the attached documents, can we determine that this item is not genuine?</P> Thu, 12 Feb 2026 14:41:00 GMT https://community.nxp.com/t5/Other-NXP-Products/PCF8583T-5-518-is-it-original/m-p/2317215#M31209 PSkorupa 2026-02-12T14:41:00Z https://community.nxp.com/t5/Other-NXP-Products/PCF8583T-5-518-is-it-original/m-p/2317633#M31214 <P>My personal advice is to avoid companies in Shenzhen; they are almost all fake, and they collude with local testing agencies to create fake test reports. I suggest you look for a Hong Kong company that conducts WHL testing and has a Certificate of Conformity (COC).</P> Fri, 13 Feb 2026 08:11:33 GMT https://community.nxp.com/t5/Other-NXP-Products/PCF8583T-5-518-is-it-original/m-p/2317633#M31214 shenqidmmdvrjj 2026-02-13T08:11:33Z