Electronics Forum: stencil (Page 487 of 540)

Best way to ensure max solder load on SOIC w Thermal Pad

Electronics Forum | Tue Nov 09 04:21:11 EST 2010 | bising

Hi SMT World, I am facing a technical challenge related to an SOIC 14lds with thermal pad on it's belly that needs to be soldered onto PCB, together with leads. It is a 50 per board, expected 80% solder load on every one. We have some units without

Using Vapour Phase Soldering Process

Electronics Forum | Mon Dec 20 22:41:42 EST 2010 | grantp

Hi, We had it for a while, but had to take it out and replace it with normal convection. I mean the soldering quality is absolutely amazing, and the joints looked perfect, however it was a horror for tomb-stoning. We tried all types of stencil apert

Solder beading with PCB from different fab

Electronics Forum | Wed Apr 06 04:18:03 EDT 2011 | emmanueldavid

TK, Hope you got it right only for this round of assemblies. Well, passing through a Reflow belt is not an ultimate process to dry circuit cards & take out moisture from Solder finished layers. First of all, if the packs were not unsealed (even s

BGA Reflow

Electronics Forum | Wed Jun 08 13:41:56 EDT 2011 | swag

Two thoughts from me: 1)Are you sure the balls are collapsed? Have you looked at the perimeter from the side with a scope? From your x-ray, it appears you are correct in saying they are collapsed as the balls get smaller in a uniform fashion as you

SMT equipment--cheap/for starter

Electronics Forum | Thu Oct 20 19:35:45 EDT 2011 | eadthem

Your kinda vague on your description, How many components per hour, how many circuits per a day, week, month? what kinds and size of parts.? For a PNP setup for smt boards you will need a stencil printer(possibly manual or full auto like a DEK, 1 o

Underscreen cleaning cycles

Electronics Forum | Fri May 11 14:54:38 EDT 2012 | stentech

I am not aware of the Nano protek flaking off. However I do believe it can wear off through abrasion. Unforunately there is no red light goes off when it has worn unless you have good paste inspection. Even when it wears it will not take you to a neg

Underscreen cleaning cycles

Electronics Forum | Thu May 17 11:39:38 EDT 2012 | stentech

Hi again quickly. Anyone need a sample let me know ..no charge. I would be evry interested in your findings and can give many references for you to talk to..customers. Scott I am working on a project with different cut parameters very time consuming

How to place pin supports the same everytime a board is ran?

Electronics Forum | Tue May 22 10:33:36 EDT 2012 | swag

In my opinion, the best solution is h-towers or similar dedicated tooling designed for each build. However, a quick cheap fix is to make templates to lay in the bottom of the centernest. If you have access to CAD software, you can print out the ger

Large component count board

Electronics Forum | Mon Aug 06 14:08:56 EDT 2012 | dyoungquist

We run a MY12 and our largest layout has 9700 components of which about 8500 (88%) are placed by the Hydra head. Average run time for our layout is 75 minutes. Based on that and depending on what percentage of your components are Hydra mountable, y

Dek vs MPM Printers

Electronics Forum | Mon Oct 08 09:59:16 EDT 2012 | swag

We run both. We just bought a new Horizon 03iX with all the bells and whistles. Nice machine, great install and training. We've already saved a ton of labor using the adhesive dispense system. Both brands are very good. The MpM's are built heavi

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