Full Site - : nitrogen increases surface tension (Page 15 of 22)

Re: BGA Repair Problems

Electronics Forum | Mon Aug 17 02:50:44 EDT 1998 | Bob Willis

| Have an SRT w/preheat, 18 layer board all copper, 456 BGA needs to be removed and replaced. The manufacturer is Chip Express and during reflow it warps up or down. Causing either opens or shorts on the corners. I was using gel flux with multiple

Re: Intrusive reflow..from the bottom..????

Electronics Forum | Mon May 24 04:01:10 EDT 1999 | Joe Manzur

John, We are using a well known solder paste, begining with the letter "H". (I don't want to be accused of advertising). Also, we are now using a board inverter. In the early day's however, before we purchased a board inverter, we were having to

Dymax vs Humiseal Urethane Confomals.... Anyone?

Electronics Forum | Tue Feb 03 13:39:08 EST 2009 | grics

Good morning Jamie. I work at a CM and can offer some input on process flexability. I do not have any data on how reliable the coating is but I can say that they are both very difficult to control. Will you be selective coating or full coating? Ho

Re: Wave Solder Problems - VIA HOLES

Electronics Forum | Fri Jun 04 15:51:36 EDT 1999 | JohnW

| | | I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | | | | | We've been getting a rash of defects that we call in this company, "insufficient solder in VI

Re: Corrosiveness Measure

Electronics Forum | Fri Sep 04 08:49:04 EDT 1998 | Ben Salisbury

| | | | | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, car

Re: Corrosiveness Measure

Electronics Forum | Fri Sep 04 09:51:34 EDT 1998 | Dave F

| | | | | | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter,


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Surface Mount Technology Association (SMTA)
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