Electronics Forum | Thu Jul 18 21:04:06 EDT 2002 | davef
So, why can't you clean misprints on Entek boards? Entek: Cheap, flat, OK shelf life, not without process and fabrication issues. Your Entek organic solderability protection is probably Entek Plus [CU106A] made by Ethone OMI. Consider getting a co
Electronics Forum | Wed Aug 21 20:11:34 EDT 2002 | mitch
We are going to begin using a 64 pin 10mm QFP with 0.5mm lead pitch. I was recently asked if we need to purchase our PCB with E3 coating instead of tinned pads when using the .5 pitch. The concept being suggested is that the E3 coating will give us b
Electronics Forum | Tue Jun 03 13:01:16 EDT 2003 | Ramanandkini
We have some experience in manual application of conformal coating using a brush that too for small circuits espceially on the soldered pads. We use Chase corporation's Humuseal 2A64. This passes high humidity tests. I am also in touch with Lackwere
Electronics Forum | Wed Apr 19 16:43:05 EDT 2006 | samir
Silicone-based coatings "repel" most foreign,non-compatible materials like peelable solder mask, and rubber or vinyl boots. The result is, uncured material around the vicinity of where the boot was. Trust me. Been there and done that. As a rookie
Electronics Forum | Wed Apr 18 09:16:51 EDT 2007 | Cecil
We currently have an assembly that we have to mask the surface of several (24)SMT components where thermal compound is applied at a latter operation. These component packages vary from BGA's to QFP's. After the thermal compound is applied the PWA is
Electronics Forum | Thu Sep 06 22:01:21 EDT 2007 | syedsmt
Hi! I am Syed from Hitachi located in Malaysia.It seems that the discussion about OSP is very much related to the dillema that I am facing in my company.I am the Senior Executive for the SMT Department at Hitachi.Currently we are facing some issues w
Electronics Forum | Fri Sep 17 03:13:00 EDT 2010 | grahamcooper22
In HASL pcb coating you need to fully coat the pads with solder and then blow off any excess solder to leave a nice coating on each pad. Generally pcb manufacturers try to give you a flat pcb pad to make your solder paste printing more consistent. To
Electronics Forum | Wed Feb 20 10:12:27 EST 2013 | dontfeedphils
Hey Bill, it really depends on the material you're looking at using UR, SR, AR, the easiest to deal with being AR, although if you can find a UR that doesn't clog up the machine too bad those are usually more viscous and easier to apply selectively u
Electronics Forum | Mon Nov 25 03:14:57 EST 2013 | mg2013
Hello @ the specialists, we have a Nordson Asymtek SL940 to coat our pcb's. We can use the valves SC100 and SC400 for conformal coating applications. We use the Humiseal 1A33 as the conformal coating. Now we would like to use the standard 1A33 in th
Electronics Forum | Thu May 26 09:54:49 EDT 2016 | swag
Not exactly SMT but something I recently did that might save you lots of time and money: Complex high $ assy that has 25+ conformal coat keep out areas - most different shapes. All locations are dimensioned on customers' print. We tried a one piec
