Unmarked Die Revisions :: Part II
[NOTE- This article will describe a process known as “Wet-Etching“. Wet-etching is a process that can be very dangerous and we do not recommend anyone reading this try it unless you know what you are doing and have the proper equipment. The chemicals required such as Hydrofluoric Acid (HF) attack bone marrow. HF is painless until several hours later when it’s too late to take proper action so please be careful and be responsible. ] Previously we discussed noticing Microchip making changes…