Electronics Forum | Fri Oct 30 08:24:12 EDT 2009 | rajeshwara
thnx davef & all With the help of all at last i solved the problem , The vias are not caped from bottom , so solder paste draining through the via to the floor which creates voids between IC ground pad and e-pad. Tnhx all again
Electronics Forum | Thu Oct 01 06:22:48 EDT 2009 | rajeshwara
We approved the Reflow Profile from Cookson Solder Paste Manufacturer we are using. Now I am suspecting on method of vias designing below that QFP.There is exposed pad for that QFP and we print solder paste there , but when i see under x-ray there is
Electronics Forum | Mon Sep 28 16:15:57 EDT 2009 | davef
That your solder connections reflow properly when heated with a soldering iron, indicates that that your reflow recipe needs improvement. * Thermocouple the pads that require touch-up and adjust your oven recipe to assure that they reach liquidous+20
Electronics Forum | Thu Oct 01 08:34:50 EDT 2009 | davef
First, the reflow thermal recipe provided by your paste supplier is only a ball park guess. Beyond that, the temperature measured by thermocouples on your oven heaters are only loosely related the temperature of solder paste on your board. You need t
Electronics Forum | Thu Apr 04 06:54:00 EDT 2013 | susanc
Production scheduling software is awesome. I am using it and quite happy with the performance and result. _______________________ production scheduling
Electronics Forum | Wed Nov 10 02:13:32 EST 2004 | Grant
Hi, We are thinking about starting to use via in Pad, for both BGA and 0402 and 0201 components. Does anyone know how this would effect production. Obviously PCB production is not difficult, but this should only effect production and assembly. R
Electronics Forum | Tue Apr 17 02:42:58 EDT 2007 | Wayne
Obviously, it is not considered the ROHS compliance product already. One or few components are not ROHS, how can it be ROHS product? If it is agreeable by your end customer, you should list down the part which are using leaded product before hand, at
Electronics Forum | Thu Oct 16 07:57:20 EDT 2008 | pjc
http://www.solderpasteinspection.com/productservice.html http://www.sakicorp.com/eg/Products_/prod/voyager/ http://www.kohyoung.com/eng/product/product_01.asp http://www.lvtechnologies.com/ http://www.malcomtech.com/products_malcom.html
Electronics Forum | Thu Dec 06 23:34:24 EST 2012 | Mike Konrad
Calibration solution: http://store.aqueoustech.com/ProductDetails.asp?ProductCode=Z1157 Test solution: http://store.aqueoustech.com/ProductDetails.asp?ProductCode=Z1155 -Mike Konrad
Electronics Forum | Mon Jul 31 16:57:36 EDT 2023 | calebcsmt
When a product is only assembled and visual inspected (no testing required), who becomes liable/pays for defective product, when the issue is not visual? If a customer is not requiring testing at the CM, technically they're only paying for a fully
