Electronics Forum: 2006 (Page 376 of 649)

Air inclusion in solder paste

Electronics Forum | Mon Mar 27 20:53:12 EST 2006 | davef

If you believe: * There is air in your paste AND * You are not whipping the air into the paste ... You should: * Return the paste to your supplier * Get it replaced * Begin qualifying a replacement supplier. One thing before you go racing off to ly

Air inclusion in solder paste

Electronics Forum | Mon Mar 27 21:09:29 EST 2006 | ms

Thanks Dave I'm not convinced the air is necessarily in the paste from manufacture - suspicious that it may be folding in during the change in direction of the print cycle - or as the paste travels across apertures. It is not necessarily in the fir

MPM UP2000 Installation

Electronics Forum | Thu Mar 30 06:52:47 EST 2006 | smartasp

Hi Guys Just received a second hand (1998) MPM UP2000 Paste printer. Can anybody let me know about the tricky issues (not in the manual) to look for and what are the common spares we should have on stand by. Should we have an expert helping us inst

MPM UP2000 Installation

Electronics Forum | Fri Mar 31 13:18:39 EST 2006 | Chunks

Almost 4-got. Get some squeegee blade detents. They're the little spring loaded things that keep the squeegee blades in place in the head, until the machine locks them in place. they tend to wear out if you do a lot of blade swapping. Fastek also

MPM UP2000 Installation

Electronics Forum | Mon Apr 03 10:18:50 EDT 2006 | amol_kane

Hi Smartasp, would you mind giving the name/ more info of the company you work for? (this is not related to the post and hence we can take it offline if you want). my e-mail address is amol_kane@hotmail.com I am originally from India, and hence inte

MPM UP2000 Installation

Electronics Forum | Wed Apr 12 11:26:53 EDT 2006 | Cmiller

FYI, Chunk is right about the blade detents if you have the Pro-head. If you don't have that head, you will not need them. If you mount your blades using thumb screws, you can stop looking for the detents!! Ours ran very well, keep it CLEAN. We used

Gold Flash with QFN28 problem

Electronics Forum | Thu Mar 30 08:48:37 EST 2006 | russ

So you have solder balls at the outer edge of the part right where the pad goes underneath? If so you just have too much solder but I wouldn't worry about them. the solder usually does not wet to the edges of these parts because of the exposed copp

Leader tape on partial reels

Electronics Forum | Thu Mar 30 13:15:17 EST 2006 | gregp

Maybe the issue is how the feeders are being unloaded. The operators should leave enough covertape to reload the reel onto a feeder without component waste. If the issue is some parts are exposed in the feeder then you will most likely loose those p

Leader tape on partial reels

Electronics Forum | Thu Mar 30 13:15:31 EST 2006 | jdengler

This will depend on the feeder design. Some feeders cause a loss of several components when removing a reel from a feeder. If yours do not, the operator should be able to leave enough tape and mylar cover tape for this reel to be put back onto a fe

Leader tape on partial reels

Electronics Forum | Fri Mar 31 16:06:58 EST 2006 | GS

I think this can be of help when dialing with setting up feeders for product prototyping, where often we have to dial with a short quantity of components (often pieces of carrier tape w/o tape and cover leader) just enough to run (if lucky) those few


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