Electronics Forum | Fri Aug 06 08:38:25 EDT 2004 | Bob R.
You don't mention the board surface finish, but BGA's on NiAu are prone to brittle fracture in the Sn-Ni intermetallic on the board side of the joint. You may not be able to see it visually, but it would show up in a cross-section. In-circuit test
Electronics Forum | Thu Feb 15 20:27:11 EST 2007 | vshan
Hi Chris Good Day!!!! well we are running flex panel(150x270) with one connector(3 pin legs both sides) insert. Each panel consists of 28 parts and its used for disk drive industries. We are having a pallet to support with the top cover design such
Electronics Forum | Tue Feb 20 20:40:03 EST 2007 | vshan
Hi Chris Good day!!! could you please let me know what kind of basket yu r using. Currrently we are using 30 by 40cm stainless steel carrier. Top n bottom design with square type. The area of connectors are open so that the water hits the connetor d
Electronics Forum | Thu Feb 15 21:59:09 EST 2007 | vshan
Hi Jim Good Day yes we are using a pallet bottom support as well as top cover. The top cover are design such a way that the solder paste area is open. the type of solder is lead free type(Avantec-ecorel free) in one panel consists of 28 parts and e
Electronics Forum | Tue Oct 03 09:36:30 EDT 2006 | Brian
Using a meter to check a BGA connection to the board, there will be other parts of the circuit involved. Sounds like a bad batch of parts.
Electronics Forum | Wed Aug 09 19:14:15 EDT 2006 | Board House
Our Manufacturing policy regarding welds is as follows. 1) Inner layers - depends on Core thickness and line width. Our shop will not do any welding on core thickness less then 5 mils. or line width less then 5 mil. Good AOI practices reduce the a
Electronics Forum | Wed May 16 15:40:56 EDT 2012 | davef
Here's some notes from a Bob Willis presentation Assembly of Flexible Circuits with Lead-Free Solder Alloy [Bob Willis leadfreesoldering.com] * Flexible Circuit Construction ** Base Material - 0.05mm Copper 18/18 um ESPANEX from Holders Technologies
Electronics Forum | Thu Aug 05 05:28:03 EDT 2004 | Bryan
There 's one thing I'm not sure...For the OSP board finish whether we could bake and then store this kind of PCB?or whether once we opened the vacumm package of OSP board and then we can't bake it ? Thanks Bryan
Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend
We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib
Electronics Forum | Thu Oct 14 11:36:18 EDT 2021 | stephendo
The best shelf life for OSP is run both sides the same day they are opened for the first time. They are good for JIT but I didn't know that they were still good after washing.
