Crack IC Use Toothpick Method
Crack IC terminology “fixed point crack” first emergy in the CPLD notebook from XILINX brand. Which crack IC method is quite similar to the optical faulty injection crack IC method and become more and more commonly use in the industry compare with other unknown cheap cost crack IC method. In order to reach a higher preciseness level, we will introduce the fixed point IC crack into the ultra-violet IC crack method and use general marking pen to lay on the IC chip surface, and the use toothpick to strip off the required area. And then use the marking pens with different colours to make the test on the same IC memorizer.
We can measure the erase time length difference between the clean IC and already lay on IC when crack them. The result is in the list red marking pen has the best performance in the whole process of IC crack. the precise location can be seen on the IC surface and provide appropriate attenuation. Wipe out the dry marking will bring no damage to the deactivation layer when crack IC. Some kind of the marking pen will have minor electrical conductor and cautions must be made when crack IC by using them and avoid to spray on the track soldering area. You don’t too much experience to get the work done since it can be learned quickly and these tricks can help you locate the places of security fuse swiftly and remove the ink on the IC at the end of each erase or lay on cycle by solvent.
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