Electronics Forum: chinese and cutting (Page 10 of 15)

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 12:53:58 EDT 2009 | dyoungquist

On our Mydata machine, we place a piece of scrap bare pcb next to the pcb we are loading. Using double sided tape, we attach the cut tape strip to the bare pcb, then program the machine to pick up the parts from that location. The smallest Mydata m

ECN, ECO and Board Mods for Unpopulated Boards

Electronics Forum | Fri Dec 20 06:21:10 EST 2013 | bandjwet

When you need a few board modifications made such as cutting some traces or adding pads/traces and you do not have time for a board spin or have lots of pricey boards with mistakes what resource are you using? Internal or external? What method is bei

Selecting pick and place machine (comparison/personal experience/sales pitches)

Electronics Forum | Wed Apr 28 17:45:14 EDT 2021 | mishafockin

This is a very tricky question butt... we should be able to afford up to 200k for a full line (printer/PnP/inspection/oven) I know the cost of feeders will be very critical but looks like the good old pneumatic not cutting it anymore.

Re: paste release from stencil, and volume calculation

Electronics Forum | Tue Nov 09 17:12:38 EST 1999 | Dave F

Steve: Addressing your points: 1 FINE PITCH APERTURES Electropolishing Laser Cut Stencils: Laser cut should not requiring polishing. Geesh, how much money do you have for stencils? ;-) Oval Shaped Apertures: Pass. What do you expect to gain f

Pick and place machine for small productions. Any suggestions?

Electronics Forum | Wed Sep 18 19:38:33 EDT 2013 | jvadillo

Hi all! after hours of manual hand soldering and after spending thousands of euros subcontracting PCB assembly, we have decided to buy a fully automated pick&place machine. Our main assembly requirements are 0805/0603 for passives and TQFP-64

Stencil type and design for 0.65mm pitch QFP100

Electronics Forum | Wed May 10 01:00:09 EDT 2000 | gary

0.65mm pitch QFP. I believe that this is the borderline for Fine Pitch. Will I have a good paste release with Chem-etch matched with a rubber squeegee? I'm planning of a 15% reduction on the Width and no reduction on the length. Any feedback whether

Re: paste release from stencil, and volume calculation

Electronics Forum | Mon Nov 15 12:13:41 EST 1999 | Dave F

Steve: There are guidelines for determining if your aperture has the correct proportions to the foil thickness. Maybe that�s what you�re looking for: 1 Aspect ratio = aperture width/foil thickness Chemically etched SB GT 1.5 Laser cut SB GT 1.2

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 09:36:17 EDT 2009 | spitkis2

Does anyone know of fully automatic pick and place machines that can pick up parts either from small pieces of cut tape (i.e. 0402's, 0603's, SOT's) or components loosely arranged on a tray (not ic's that are in matrix trays)? Application is proto

Pick and Place Startup - LQPF100 bridging issues

Electronics Forum | Thu Mar 25 20:09:35 EDT 2021 | grahamcooper22

What is the QFP pitch ? What aperture dimensions have you chosen ? Is the stencil laser cut then polished ? Your AFTER stencil size looks promising...your BEFORE stencil aperture size looks disastrous...would surely give bridges.. Your pcb pad siz

Possibility of a cheaper pick and place machine design?

Electronics Forum | Wed Sep 10 23:06:36 EDT 2014 | andrespena

Sorry 10 days passed before I replied. This happened and that happened and I completely forgot about this forum. But here's my explanation: 1. How to get parts on the board? This is a very good point, and I totally understand why you believe I hav

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