Electronics Forum: laser cut stencils (Page 26 of 55)

Re: Solder Paste volume w/reliability data.

Electronics Forum | Fri Jul 30 17:13:30 EDT 1999 | Dave F

Looking for solder paste specification limits which have reliability data to support them. Currently, we are looking to define the min/max volume necessary to ensure a good joint on CBGA, PBGA, and Micro-BGA's. Any information will be greatly

Re: Aperture Reduction for QFP (fine pitch)

Electronics Forum | Tue Sep 21 08:49:59 EDT 1999 | Chad Notebaert

My stencil thickness is 6 mil and we got qfp's with fine pitch. how many percent should i reduce my stencil aperture using a 6 mil stencil for 0.5 mm pitch and 0.4 mm pitch ? thanks We use 6 mil lasercut stencils with 15% redu

PCB Laser Depaneling

Electronics Forum | Mon Jul 17 23:06:50 EDT 2017 | ivyzhang

you can try Guillotine type PCB Depaneling machine, with very low cut stress , won't hurt components , the cut blade thickness can be make to 0.7mm . http://www.sam-smt.com/pid11368146/PCB-depaneling-Machine.htm

Differences between screen and stencil printing

Electronics Forum | Thu Dec 16 15:00:20 EST 2004 | glaucon

Simple differences. Both processes require a very similar machine platform, controlled motion, vision fiducial recognition and alignment of a substrate (PCB or hybrid ceramic) to the "image", the image being either a stencil (hence stencil printing)

Automated Depanel - Tabs or Scores?

Electronics Forum | Thu Jan 23 12:39:25 EST 2020 | rlackey

Hi Phil, Tabs every time for me, but running in volume so the slow down in tool travel for cutting important. Have used Cencorp 1000 & 1300BR, and Asys ADS01 - both in line systems with grippers from the top to hold the board and the router underne

stencil design software

Electronics Forum | Wed May 22 13:40:24 EDT 2002 | Hussman69

Boy, I step out for a bit and everybody picks on me (just joking). I believe I may have been off base a bit. Checking every bit of your stencil design is very good - I do that too. I calculate LXWXH and reduce or over print where needed, depending

Stencil Cutters

Electronics Forum | Wed Nov 19 17:29:05 EST 2008 | elias67

It is not as easy as just buying a Laser machine. There is much more involved in bringing this in house. With the price of stencils these days, you would have to be consuming a very large amount of stencils to justify such an investment. Steve is r

Water Jet Stencil Cut

Electronics Forum | Fri Oct 07 04:25:16 EDT 2005 | GS

Thanks everybody for your comments. I am not going to move to stencil waterjet cut. But because recently talk to people who want to move in that way, so that's why I am trying to get infos as much as it possible in order to learn what does it mean a

Laser trimming of resistors on PCB

Electronics Forum | Tue Jan 30 11:14:25 EST 2001 | svenson

I have an idea of trimming the resistors on a teflon PCB (FR4) after mounting and soldering. Can I use a laser to cut on a smt mounted resistor while the PCB is in functional test? The goal is to balance the resistances for a telecom application. Ha

Laser Depaneling

Electronics Forum | Thu Jan 23 15:46:35 EST 2003 | MA/NY DDave

Hi Hey I might even know this company. No guarantee since it might be years ago. Another idea is die cutting. Laser, I think CO2, is jazzy since it is programable, yet so is water jet and it has a tad less problem with reflective surfaces like the

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