Electronics Forum | Thu May 02 10:25:14 EDT 2013 | wahahasteven
we have a Specialty coating system (SCS) precisoncoat spray coating system. we are using an acrylic coating material with about 80cp viscosity. The spraying pressure is around 4-6 psi. The main issue is the finish looking of the board. If we apply hi
Electronics Forum | Mon Jul 08 08:29:14 EDT 2013 | emeto
You can use any metric ruler to do that. Examples: Pitch 2mm x 200parts = 400mm length or Pitch 4mm x 100parts = 400mm length You can also calculate approximately how many parts you have on the tape by using formula. I don't have the formula but
Electronics Forum | Fri Oct 04 16:08:28 EDT 2013 | hegemon
Same idea but simpler execution. Verify Solder pot temperature. Verify Temperature of Solder as it leaves the nozzle. Verify preheating gets your PWB up to 90C-120C prior to soldering. Check machine speed, verify 4 seconds contact with solder at
Electronics Forum | Wed Nov 20 16:47:10 EST 2013 | aaronpavone
I have a right angle male shrouded connector and the whole set of termination leads is tin lead plated, at least 100 microinches thick. Should the entirety of the lead be conformal coated? Or can we have just the joint coated? I know I have coated le
Electronics Forum | Tue Feb 25 14:39:20 EST 2014 | nicodj77
Stellar Technical Product, we been ordering from them for almost 6 years. My needs where to be used with connectors or power modules on a tray without pick up area (dots) for pick up Fuji nozzle of 5mm. There is no P/N because is a special order, b
Electronics Forum | Thu Apr 17 14:01:26 EDT 2014 | hegemon
And digging a bit further, are the opens at the device level (all the solder on PWB pad, none on device pad) or at the PWB (similar to pillow defect?) After answering that, I would start thinking about(in this order)paste print quality and consisten
Electronics Forum | Thu Jun 12 09:42:06 EDT 2014 | spitkis2
I am looking into Vapor Phase with Vacuum and Inline Reflow with Vacuum (besides Heller I believe a German company SMT has something comparable). There are a couple of companies I found that make vacuum ovens for soldering of hybrid microelectronics
Electronics Forum | Mon Mar 16 13:35:20 EDT 2015 | swiese242
This has been a challenge for most manufacturers. It depends on board thickness, lead or lead free paste/parts. We have a slim-kic to get the profiles correct in our 14 zone oven. I believe it may be the recently posted suggestion of too much heat in
Electronics Forum | Mon Apr 06 09:04:31 EDT 2015 | jesseoliveira
Hi all! I work in FA Lab on Brazil. Recently we had a problem with a dye pry analysis of BGA component due to breakage of WLP package (wafer level packaging). In this case, WLP thickness is about 0.28mm and was damaged during pullout process. Our
Electronics Forum | Wed Jul 15 11:42:24 EDT 2015 | davef
Here’s what you should try: * Go to the “Used SMT Equipment” nav tab [left margin, upper part of this page] * Click “Add Item” button [weird orangy, peachy color button, right side, near top, above thick blue line] * Complete form, making sure that y
