Electronics Forum | Tue Nov 07 22:41:48 EST 2006 | davef
You are correct that hand soldering ceramic capacitors often causes them to crack. They do not take thermal shock well. You might be able to reduce the amount of cracking by following the rework repair guidelines discussed in the fine SMTnet Archiv
Electronics Forum | Tue Nov 28 15:49:33 EST 2006 | Kerwin Hooshey
Grant, but that doesn't change the fact that you have to run the board again a half-hour-later...hahaha. Also, the Chinese are FAR from being innovators...rather, they're out-of-control "immitators" of products, breaking patent laws and reverse engi
Electronics Forum | Tue Nov 28 17:23:03 EST 2006 | flipit
Flash gold usually refers to electrolytic gold with a short plating time. In other words gold plating that requires current to plate. If you have bare copper under your soldermask, the gold is probably ENIG. The only other way to have bare copper
Electronics Forum | Wed Dec 06 16:48:42 EST 2006 | Mario Scalzo
I would be glad to help you eliminate the solder balling and beading that you are seeing. As this is a fairly common defect, I would like to forward you an Application Note that we have developed that explains the cause and possible solutions. Most
Electronics Forum | Tue Dec 05 15:40:05 EST 2006 | jdengler
What year is your machine and what year is your Electric Drawing? My machine is 1989 and so is my drawing. I do not have a SIP-1750 drawing. The IP went through several changes during its production so your machine may not match mine. The CON I/F
Electronics Forum | Fri Dec 29 15:02:33 EST 2006 | bman
We build quite a few cables ourselves, and we go through a lot of heat shrink labels. Unfortunately, we only use Brady heat shrink labels, so I don't know if I can help much. Are you actually running raw heat shrink through your printer? If so, go
Electronics Forum | Fri Jan 05 07:38:52 EST 2007 | John Burris
I would concur with the above comments. We have used Juki/Zevatech from the 570L model on and run a full complement of 700 series machines. I have a 10 year old 730 machine that still cranks out product every day over two shifts without problems. Yo
Electronics Forum | Wed Jan 03 21:20:22 EST 2007 | davef
Comments are: * General purpose RTV (RTV-108) releases an acetic acid (vinegar) during cure and corrodes copper, brass and sensitive metals. It is therefore NOT for use in delicate electrical or electronic applications. However, there is an electrica
Electronics Forum | Mon Jan 15 11:21:48 EST 2007 | davef
Contractor mantra: * Profile is good * Boards are bad On profiles, the key question is: where did you take the profile? We�d guess cracked connections are giving the intermittent test results when pressing on the components. You use acoustic micro
Electronics Forum | Sun Feb 04 15:06:20 EST 2007 | Scotty
Profile should have a longer cool soak. Verify as was mentioned all pin/fixture support through out the entire process. Print, Place, pre reflow hand load, post reflow, carriers, ICT, Depanel and FCT. Conformal Coated or Potted? Mylars work well for
