Just a heads up about parts being substituted by Futurlec Components:
I ordered some LMC555CN CMOS type 555 timers from Futurlec, and like over a year ago they sent bipolar transistor based Hitachi HA17555 timer IC's. Last time they offered to replace them with the CMOS version and promptly sent more HA17555 but insisted they were the cmos thing in spite of supplying datasheet details that said otherwise.
Long after I gave up and ordered a few tubes from Farnell (one tube of which turned out to be an 8 pin DIP
5V regulator).Long after I'd written off Futurlec's order I did get some real LMC555CN's from Futurlec but way to late to fill my order.Obviously with orders spaced a fair while apart getting the same wrong part, they routinely make the cheaper substitution.
Anyway today after as couple of days and two emails (The Australian one just ignored the request) they offered a refund: I said I be happy to do so if they change their catalogue:
It remains to be seen if it will happen. As I bought from their Australian operation I wonder if any local consumer laws apply.