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Please note that the device part number - EP2S30F484I4AB ended with the additional suffix 'AB' is referring to customer specific ordering suffix, the material that builds directly for some specific customer request. These are added to the device part number when a device has under gone additional qualification upon request. For general part ordering, you may look for EP2S30F484I4N.
Thank you so much for your response. This is greatly appreciated. I do have an additional question. Do you happen to know what the “X” calls out at the end of Altera PN EPF10K100EBC356-1X?
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For PN EPF10K100EBC356-1X, the letter 'X' is a optional letter at the end of a part number that specify certain device features. The 'X' here means PLLs in APEX™ and FLEX 10KE devices. This is also consider as a specific customer request devices.