Template Files .tpl versus .html files

[Collie]

We sell a large selection of Insulation Products use template files (.tpl) to collect up-to-date information from a server side database file that contains some 2,500 line items.

When an HTML (.html) file is requested on the Internet, the 'example.tpl' file is accessed, the latest product and and pricing information is accessed, then presented to the viewer as 'example.html'

My question: Can the use of .tpl files negatively impact Search Engine acceptance?