Electronics Forum | Wed Dec 04 07:35:08 EST 2019 | proceng1
We also have a few customers that seem to buy the cheapest LEDs available and provide them for the build. We've had complete reels that had obviously been exposed and oxidized. You can try a solder with a more aggressive flux. How long is your pro
Electronics Forum | Wed Apr 19 04:38:49 EDT 2006 | ge_lim
Hi Refering to the Apr edition of SMT , page 24 to 29, anyone got experience on implementing the AOI or 3D x ray : a) What is the pros and cons? b) What is the trend in the PCBA industry for wave soldering inspection? c) Will this implementation co
Electronics Forum | Fri Apr 21 18:43:23 EDT 2006 | SD
Sorry, I have not read the article. However, I do have five years experience constantly tweaking an AOI system that ran ONE product! The strength of the machine was solder inspection. The biggest problem was component color variation and shadowing
Electronics Forum | Thu Apr 25 09:27:03 EDT 2002 | fmonette
Michael, This concern is well covered in J-STD-033, section 8.6 Board Rework. "...If the component temperature exceeds 200C, the board may require a bakeout prior to rework..." In other words, you only need to worry about moisture related defects w
Electronics Forum | Mon Feb 03 05:02:49 EST 2003 | Eugene
Hi all. One of our customers recently asked us during an audit of our PCBA rework line if we have a limit for the total number of reworks/repairs that can be done on one PCBA. We specify 3x maximum on one location of a major part (LSI for example). B
Electronics Forum | Fri Mar 30 06:58:24 EDT 2007 | ck_the_flip
Alot of QM's and QE's are typically failed Engineers who lack common sense. They don't understand that measuring in DPMO's (versus DPU's) "normalizes" your data for Printed Circuit Board Assemblies (PCBA's) so that if you have 10 defects on a PCBA t
Electronics Forum | Tue Sep 14 06:00:27 EDT 2004 | sc
dear, appreciate the sharing of experience on detection tools of cold soldering defect on PCBA. thanks SC
Electronics Forum | Tue Sep 14 06:00:31 EDT 2004 | sc
dear, appreciate the sharing of experience on detection tools of cold soldering defect on PCBA. thanks SC
Electronics Forum | Tue Sep 01 17:44:46 EDT 2015 | abisson
Hello to All, Is someone can refer me to an IPC standard where the maximum allowance of pcb stretch is mention? I've look into IPC-600, or 2222 or 2615 and I cannot find what I'm looking for. I will like to implement a pass/fail incoming inspection
Electronics Forum | Wed Oct 09 13:05:34 EDT 2019 | dwl
In my experience 100% visual inspection of a first article is good but visual inspection of production boards is not really useful, if you have AOI and ICT. If your process is good and defects are uncommon, human inspectors go on autopilot and miss m
