Originally Posted by Reefa_Madness
Some one else mentioned the 4 vs. the D on the date code. That info matches the product codes...if it performs well..it has a 4 after the date AND on the parts # label, if it doesn't, the ones with the D after the date code also have it in the part # and these do not clock as well.
The TwinMOS parts number is just indicating the same thing that is being printed on the chips themselves.
This 4 is what we should be looking for and is indicating the Winbond chips, whether or not it is a TwinMOS or an M.tec chip, they both are holding true on this.