Electronics Forum | Mon Jan 14 09:15:44 EST 2019 | davef
Suppliers list the contents of their products in a MSDS. Libraries of these sheets are listed online. Look up the product you're using there. A safety data sheet, material safety data sheet, or product safety data sheet is a document that lists info
Electronics Forum | Fri Aug 07 03:16:33 EDT 2020 | rsatmech
It's a BGA component. Missing ball is not possible because we have enabled the vision in pick and place. Solder paste is OM353 type 5 Possibilities of Flux dry before reflow seems valid but I saw the board data it was completed on time like other
Electronics Forum | Fri Apr 12 13:33:17 EDT 2002 | blnorman
We use steel stencils. The adhesive manufacturer can give recommendations for squeegee type, material, pressure, etc. A lot of the tech data sheets include this information.
Electronics Forum | Fri Sep 17 11:55:31 EDT 2010 | qualityguy
All, Get the material data sheets, lot numbers of ink, supplier's process flow, bare boards with ink lot applied ( qty 20), Contact the ink supplier and perform a 3company DOE.
Electronics Forum | Fri Jun 04 01:13:31 EDT 2010 | boardhouse
Hi fotis, Big difference between Cem3 & FR4 is that FR4 the glass is woven and Cem3 is sheet glass non-woven. for Multi layer product, i would not consider Cem3 due to increase chance of de-lam due to lack of weave for strength. Cem1 and Cem3 are
Electronics Forum | Mon Jun 25 11:55:47 EDT 2007 | ck_the_flip
I don't think THEY (Humiseal) know how their material cures. I have a data sheet from them for 1B73, and it says 24 hours at room temperature or 30 min. @ 170�F. We use our in-line oven mainly to dry the material and make it tack-free. You would
Electronics Forum | Wed Mar 24 21:40:05 EST 1999 | Dave F
| I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's performance, and the MFR data sheets don't match up at all (they each spec
Electronics Forum | Tue Sep 30 20:55:14 EDT 2008 | davef
Residues from different no-clean fluxes produce different levels of variation in RF circuits. Some no-clean fluxes work fine. Following this, a no-clean flux can produce different levels of variation in RF circuits depending on the process setup.
Electronics Forum | Thu Jun 10 21:09:17 EDT 1999 | Samuel F.
Humiseal probably won't work as most of them are solvent based or require pretty high temp cures. MicroCoat technologies manufacturers UV cure epoxy conformal coating materials that have been used to coat just about anythin (except the green fog) Cal
Electronics Forum | Wed Aug 26 10:48:30 EDT 2009 | grahamcooper22
Some print expiry date on reels and some specify a shelf life on data sheets. Two main reasons are that the flux in the wire is a mix of chemicals and over time in storage these can react so soldering performance can be changed. Although I have to sa
