Electronics Forum: vacuum (Page 66 of 97)

Vacuum Bags

Electronics Forum | Wed May 16 13:06:33 EDT 2007 | stepheniii

3.3.2.1 Moisture Barrier Bag (MBB) The moisture barrier bag shall meet MIL-PRF-81705, TYPE I requirements for flexibility, ESD protection, mechanical strength, and puncture resistance. The bags shall be heat sealable. The Water Vapor Transmission Rat

Recommendations on Solder Scavenging Systems

Electronics Forum | Fri May 01 08:15:36 EDT 2009 | davef

Scavenging Methods [Improve Solder Scavenging of Large Area-array Sites, SMT, Laurence Harvilchuck, process research engineer, Unovis Solutions, harvilch@unovis-solutions.com] Two common methods exist for scavenging residual solder on the site for s

Quad 4C part placement rejection

Electronics Forum | Thu Nov 17 14:33:02 EST 2011 | olddog

Thanks again Bobpan for all of your help. I hope some of my questions are dumb ones. Regarding "first", the QA error 0, you were right. In checking the setup, for some reason theta was 65227 instead of the 0 that I thought I had set. Regarding "sec

Very thin laminate substrate problem with solder printing

Electronics Forum | Thu Jan 26 02:14:52 EST 2017 | jgo

Hi all, Am new to SMT here. I have a very thin laminate substrate which around 120um thickess. Being that thin, warpage is constantly an issue for us. For the solder printing part, we have a number of problems. Being so thin and warped, we need t

GSM Calibration; Z-axis not touching down to pickup calibration card.

Electronics Forum | Mon Jul 18 21:36:18 EDT 2022 | ttheis

We have two GSM machines (4-spindle, single beam) and had a camera fail on one machine. We decided to clean and calibrate the cameras on both machines. One machine we had no problems and all is working properly. The other machine will not pick up the

Re: PCB Support Methods @ the Fuji.

Electronics Forum | Thu Sep 23 17:28:54 EDT 1999 | JohnW

| | | Question for you SMT guru's out there. | | | | | | What is the best way to support boards on Fuji's CP6 machine's x-y table...particularly for 2nd side SMT where the support side already has parts... I am toying around with the following meth

Safety equipment for servicing solder wave

Electronics Forum | Thu Aug 21 14:23:56 EDT 2003 | kenBliss

In order to service your wave solder machine safely, the following needs to be understood. Ladling dross out of the machine and putting it in into a coffee can or similar is not safe and puts operators and other employees at risk. Protecting the se

Fine Pitch Taped and Reeled

Electronics Forum | Mon Jan 15 15:33:41 EST 2001 | davef

First, we have never repackage devices, as you propose. Our schedule has us standing at Receiving like panting dogs waiting for the material required to jump the job, much less giving up the time and money to have parts repackaged. Second, fabricat

converting from 0805's to smaller packages

Electronics Forum | Fri Jan 05 13:40:04 EST 2001 | Steve Thomas

Is my employer living in a vacuum? Are we the only ones doing this? I can't find anything in the archives on this topic, so forgive me if it's been hashed over before. Our major chip supplier is giving us less than a year to convert our products o

Re: 0402 pick problems

Electronics Forum | Fri Nov 17 15:20:37 EST 2000 | Kris

Dave, That's exactly what we are seeing. There is a trail of components leading away from the pick point, all of which are 0402 parts. I can remove the feeder from the machine, advance a few parts into view, turn over the feeder and only half will


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