Electronics Forum: stencil (Page 224 of 540)

Stencil Cleaning

Electronics Forum | Tue Feb 05 15:36:19 EST 2013 | markhoch

About a year and a half ago my company purchased an ultrasonic, automatic stencil cleaner that we,(I), am unhappy with. Without "naming names", I can say that this particular machine has some fabrication issues that prevent it from operating as inten

Nano coatings ?

Electronics Forum | Mon Feb 25 09:34:37 EST 2013 | davef

Oded: The coatings that I mention serve different purposes. * Antiadhesions seem to be designed to improve paste release from the stencil * Flux repellents seem to be aimed at reducing the under wipe frequency of stencils. At IPC APEX 2013, DEK and

Dip Flux or Solder Paste?

Electronics Forum | Mon May 13 11:20:06 EDT 2013 | emeto

From what I have read about the topic, recommendation is to use flux for fine pitch BGAs. Printing is difficult because of the small pads. HEre is the moment where you have to make your calculations. Do you have enough assemblies that will use

stencil/printing machines for solder paste

Electronics Forum | Wed Feb 25 21:47:24 EST 2015 | dinhhuunam

Hi Marshall Bartel, SJ INNOTECH Printer is Best solution & Service for you ! HP-520S/HP-620S/HP-760S/HP-1000S Printing (±0.0125mm) Repeatability (±0.01mm) 0.3 Pitch QFP, 0402 Chip, Ø0.2 MBGA Speed/pressure control by printing section (5 sections) V

Best Jet Printer? MY600?

Electronics Forum | Wed Jan 27 15:23:25 EST 2016 | dyoungquist

You can buy an awful lot of stencils for $200K but where/how are you going to store all of those stencils? There is a certain $$$ value to all the space it will take to store them. I have been told by a Mycronic salesman that they are working on qu

Stencil Manufacturer

Electronics Forum | Fri Mar 10 11:29:46 EST 2017 | mmjm_1099

What part of the country are you located? I know numerous stencil manufacturers in the country that I could refer you to. The one we currently use is Stentech and guarantee next day delivery for basic laser cut stencils. They have always kept their w

CAM350 v12, DFMStream paste mask checks

Electronics Forum | Tue Apr 18 07:46:30 EDT 2017 | pavel_murtishev

Dear PCBFOX, I use CAM350 v12.2 build 1135. I am trying to use CAM350 DFMStream module for paste mask layer check. Examination I am interested in most of all is "Paste Mask Layer Check - Missing Paste Mask on SMD Pads (MP)", i.e. missing stencil ape

Tombstone components issue after reflow?

Electronics Forum | Sun Aug 13 22:26:01 EDT 2017 | dawson

Anyone who knows how to prevent such > flaw? > > Tombstones are those lifted components > from one sides. This results in costly and > time-consuming amounts of touch-up and re-work > after the assembly is completed. For the > customers, this e

QFN84 Solder Printing Issue (QFN with Inner LGA Pad)

Electronics Forum | Wed Nov 15 12:52:21 EST 2017 | georgetruitt

IMO – Look into nano-coatings for your stencil and radius all square apertures This should help out with solder paste releasing from the stencil helping with insufficient solder QFN LGA aperture design, try a stencil cut with a few different apertur

QFN84 Solder Printing Issue (QFN with Inner LGA Pad)

Electronics Forum | Fri Dec 01 15:06:54 EST 2017 | emeto

I am not sure that is doable. Ground Aperture is very small(for the stencil blade to get in there) and very close to the other apertures. I want to say the minimum requirement for step is 6mm clearance from other apertures for the stencil houses that


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