Electronics Forum | Thu Oct 01 11:40:17 EDT 1998 | Justin Medernach
Are there anyone who can give me the answer about solder ball problem? | We have 12 layer PCB and double sided PCB. After one side reflow soldering We found lots of solder ball under the PCB. The solder ball was coming out from via hole. | So
Electronics Forum | Thu Oct 01 21:45:45 EDT 1998 | Jason
Ross, I am a process engineer now but in the past I was an automation Engineer also responsible for maintenance of Mixed tech production lines. The Universal GSM and GSM2 are very reliable machines and have excellent support from Universal. I r
Electronics Forum | Wed Oct 07 15:25:02 EDT 1998 | Joe P.
Hi Everybody | | Is anyone aware of the possible causes that may lead to voids in the solder bumps after assembly. We assembled some dice on thin substrates and after assembly, void formation in the solder bumps were observed. | We have alread
Electronics Forum | Tue Sep 29 01:51:37 EDT 1998 | Earl Moon
| I'm going to purchase a screen printer. | I've looked at the SMTech/Sigma 500 (also called Quad AVX500). | Has anyone any comments to this machine or production experience? | Anything would be appreciated. | I'ld like to hear any other type of ma
Electronics Forum | Sat Sep 26 11:52:47 EDT 1998 | Wayne Bracy
| O-H-H-H-H-H-H-H Lawdy, lawdy... | My babuh done left me... | my dawg pee'd on my leg... | my cornflakes are all poopy... | don't make me hafta beg... | I got's dem backplane blues, o-h-h-h-h-h lawdy..." | OH! | Steve:: First thing I would do is
Electronics Forum | Fri Sep 25 22:23:35 EDT 1998 | Mike C
| Anyone Knows a chamber(or something like this) to keep the IC's out of reach of humidity, information about where can I buy one I apreciate. | Thanks | AC Al Consider the cheap way out, (Working for a contract manufacturer I have to sometim
Electronics Forum | Fri Sep 25 06:39:15 EDT 1998 | Wayne Bracy
| Does anyone know where I can get conductive benchtops? NOTE: I don't want a mat and I'm already using (and unhappy with) a laminate surface glued to a wooden table. Any and all info would be very much appreciated. | BTW: I'm also looking for conduc
Electronics Forum | Tue Sep 22 09:07:02 EDT 1998 | Steve Gregory
Hi Jacqueline! Do these joints that you're having problems with happen to be on fine pitch solder joints? Are the fillets staying attached to the foot and separating from the pads cleanly? If that is true, are there many vias concentrated aroun
Electronics Forum | Mon Sep 21 18:57:23 EDT 1998 | Dave N.
Currently we are having an issue with our current PCB routing cutters in 0.125". It has come to our attention that the vendor has set the mean diameter to be .1235" +/-.001". As such, we recieve a number of cutters in the .1225 realm. This has caused
Electronics Forum | Thu Sep 17 07:06:15 EDT 1998 | joakim fagerlund
We have problems with voids when we solder lids to ceramic flatpackages. The sealring of the package is gold(100 micro inches or 2.5 micro meters)with a underlayer of Nickel The solder is attached to the lid (preform) and the solder material is Au/S
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