Electronics Forum: amounts (Page 1 of 166)

Motherboard become NO POST when humidity increase to 90%

Electronics Forum | Sat Nov 21 16:23:05 EST 2009 | davef

Patrick I can only agree with you about low residue (alcohol based) fluxes, providing you apply the amount specified by the supplier. Amounts in excess of the specified amount can have harmful effects.

Solder Joint Stress

Electronics Forum | Wed Jun 02 19:54:04 EDT 2010 | davef

Here's one take on what you seem to be asking: * After a point, more solder is more stress than the proper amount of solder would produce. * Asymmetrical amounts of solder produce more stress than balanced amounts of solder would produce.

Re: Solder Balls on 0805 capacitors

Electronics Forum | Tue Jun 27 11:16:33 EDT 2000 | Christopher Lampron

Hello Bill, Ioan's idea's are good. One more thing that you may want to consider is using a "Home Plate" aperture on your stencil for the aforementioned caps. The idea is to put a smaller amount of solder paste directly underneath the component. This

Pb Drying / Degassing PWB

Electronics Forum | Mon Nov 24 07:36:15 EST 2008 | davef

No, but we find discussions about relative humidity fairly short sighted, because relative humidity is such an imperfect measure of the amount of moisure in the air. Dew point is much more appealing. R.H. = (amount of moisture)/(maximum amount that

Solder paste amount

Electronics Forum | Tue Jan 16 07:02:47 EST 2001 | You Kim Huat

HI, Can someone advice me, is there any guideline to determince the opening for stencil during stencil fabrication. Also is there any method to determince whether the solder paste amount is enough during this process.

Solder paste amount

Electronics Forum | Tue Jan 16 07:07:03 EST 2001 | You Kim Huat

HI, Can someone advice me, is there any guideline to determince the opening for stencil during stencil fabrication. Also is there any method to determince whether the solder paste amount is enough during this process.

Sma dispensing

Electronics Forum | Thu Apr 09 12:57:23 EDT 1998 | Rick Zak

Can anyone give me the specs on SMA dispensing for 0402 components and up. Is there such a spec or is it based on each individuals needs? DO most people use volumetric measures or dot diameter to determine correct amount of SMA? if diameter what size

Maximum Rework per Board

Electronics Forum | Mon Feb 03 10:55:15 EST 2003 | mantis

would the accumlative overall cost of repair not govern the amount of rework that can be performed. so that if aboard costs 5 dollars to repair and sells for 7 then the amount of effort and time cosumed would not warrent the repair in the first place

bending PCB Panel

Electronics Forum | Tue Jun 17 10:57:35 EDT 2003 | swagner

We had a product a couple of years ago that did the very same thing, we increased the amount of webbing to reduce the amount of warping.

Kleenox

Electronics Forum | Tue Dec 30 17:11:51 EST 2003 | davef

Just a moment of 'hair-splitting', Klennox does NOT reduce the amount of dross, it reduces the amount of solder in the dross. Look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=3836

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