Electronics Forum | Sun May 21 09:38:25 EDT 2006 | davef
Epoxy Removal and IC Delidding [Hardware Hacking: Have Fun While Voiding Your Warranty, Chapter 14] Encapsulation of critical components using epoxy or other adhesives is commonly done to prevent tampering and device access (the microprocessor shown
Electronics Forum | Wed Feb 26 21:21:34 EST 2003 | davef
Try this: * Lay the board onto a solder pot with the via in question on the heat. * Push the wire into the via. * Step back and pat yourself on the back. Since you probably have components in the area of the via that you don't want to cook, try a va
Electronics Forum | Tue May 16 15:53:09 EDT 2006 | Manvendra Verma
What is the solution for removing epoxy on BGA ics?
Electronics Forum | Tue Mar 24 22:03:39 EDT 2015 | davef
Here's some notes from IPC APEX 2015: * Black underfill is Heraeus. It needs to be preheated to 180-200*C for rework. Above 200*C it changes state and becomes difficult. * Clear underfill is from an unknown Korean supplier. * People from Heraeus w
Electronics Forum | Thu Aug 06 12:49:41 EDT 1998 | justin medernach
| I am looking for advice or information from anyone about the possible reliability problems associated with epoxy on solder pads of discrete devices. Will the epoxy expand and lift over time, Will there be adverse reaction between the solder and the
Electronics Forum | Fri Aug 07 01:02:51 EDT 1998 | zeek - just wanna to get a word in here
| | I am looking for advice or information from anyone about the possible reliability problems associated with epoxy on solder pads of discrete devices. Will the epoxy expand and lift over time, Will there be adverse reaction between the solder and t
Electronics Forum | Wed Apr 30 10:43:28 EDT 2008 | dyoungquist
This runs up a big caution flag in my mind! Counterfiet parts are often produced by removing the original markings and remarking the ICs with different part and lot numbers. I am not accusing you of this BUT we have recently been bit by counterfei
Electronics Forum | Thu May 01 23:46:55 EDT 2008 | lellis
Revealing trade secrets to achieve what a company can do to make money is a "touchy" situation. Especially on a forum where people are asking for help. Our company has the capability to remove your markings, and reapply them in several techniques.
Electronics Forum | Thu May 01 17:03:07 EDT 2008 | dyoungquist
Thanks Chris. I stand corrected in that there are legitimate/honest reasons to remark an IC. Just have to be careful as there are a few not so honest people out there trying to make a buck in the counterfeit market this way as well.
Electronics Forum | Mon May 05 19:45:39 EDT 2008 | hegemon
Yep, many of us have seen this firsthand. I had a customer who fouled up a job, then "found" a deal on some (10) very expensive Xylinx parts, and badly needed these parts to complete the job. Everything looked good afterwards, but nothing worked. X
