Thank you all for responding especially Bob coming to my rescue (as always).
I had enclosed a pdf but apparently this didn't show up on the board.
I was looking for the chip Bob showed, but didn't even know there was a 100 NCV as well.
Jim, now that I know I'm going to look out for both.
Again thank you all very much for your help.
Hopefully there's someone out there who can help me find them (maybe David?)