What does suffix E of the Altera device part number stand for? - What does suffix E of the Altera device part number stand for? Description The “E” suffix in Altera ® devices is the s ame as “ES” for engineering sample. "S" was dropped because the part number is too long and due to a character limitation in the Altera device part numbers. An example is the “EP4SGX230FF35C3NE” part number. This is the same as the “EP4SGX230FF35C3NES” part number. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Stratix® IV GX FPGA'] ['novalue'] ['novalue'] ['novalue']