Per the supplier, there has been a product design and manufacturing process change for part numbers 493-TG110- AEX50N5LF and 493-TG110-AEX50N5LFTR. This change affects parts with a date code of 1626. Date codes of 1634 and beyond will be the post PCN parts. The changes made will not affect the form, fit or function of the part. Please contact a Mouser Technical Sales Representative for further information. 5-0916-02