You might be able to achieve what you want starting from tfileInputFullRow component.
You'll probably need to get file's row count before (try using tFileRowCount) and create a loop (tLoop) to dynamically split file according with your needs.
Then you can set tFileInputFullRow's Limit parameter to read a specific number of rows and its Header parameter as a step.
Could you tell us how large this file is likely to be? At what level should the file be split?
Due to "split" option will be available in tfileoutputdelimited component, If you want to get several delimited files, you can use tfileoututdelimited to achieve it.
