Electronics Forum | Fri Dec 08 14:35:28 EST 2006 | glynnhamer
We currently are building a pcb that has gold fingers, about 36 in a concave V overall shape from .275 on the outside edge fingers tapering down to .197 in the middle of the 2 inch span that plugs into a shelf connector. These fingers are on both sid
Electronics Forum | Sat Dec 09 08:32:25 EST 2006 | davef
Thoughts are: * Most board fabs have routers that can do this work. Can yours rework these boards? * Scrap the boards and start anew. Someone made a mistake. Cut your losses. * As a wild and crazy guy alternative, buy a router with a 45* bit from
Electronics Forum | Wed Aug 24 08:50:59 EDT 2005 | davef
First, while black pad can be a problem with poorly controlled electroless gold [search SMTnet Archives for background], it is not a suffiecient reason to use electrolytic. It's the reason the supplier should fix their electroless gold process. Se
Electronics Forum | Wed Jan 05 12:48:44 EST 2000 | Dave F
Millerin: You are generally correct about plugging and over plating vias, but in Michaels case, the via is blind. Plugging would trap air between the bottom of the via and the plug material, causing an air pocket. When heated to soldering temperat
Electronics Forum | Wed Oct 08 11:23:21 EDT 2014 | wavemasterlarry
Most stuff i get comes with a plug on it. I usuaslly just plug it in to the wall where the holes are. My cousin Herb syas he licks the two prongs of the plug before he plugs it in. Says to make sur e you don't drool on it or it could shock you!
Electronics Forum | Thu Feb 07 11:59:48 EST 2002 | Ron Costa
When double sided BGA's are used on an .062 FR4 10 layer board should via's be plugged and tented? The CACHE chips being used are PBGA's 1.27mm pitch. The pad size is .030 and the finished via dia. is .010. This is a dogbone type pad and via design.
Electronics Forum | Fri Sep 13 14:37:24 EDT 2002 | norvica
I have an Altai mains adapter. Input 240v ac Output 3,4.5,6,7.5,9,12 v dc 300mA MAX It has a polarity plug where you plug in the lead. I want to run a 3v Fuji film digital camera. Do i plug in the plug so the + goes to the - or the + goes to the +
Electronics Forum | Wed May 19 11:50:32 EDT 1999 | Chris Nuttall
We care currently running into problems during our plug via process: At the moment we plug prior to soldermask (LPISM) using epoxy resin - plugging takes place from the component side - however we are seeing solderballs after solder level.This is cau
Electronics Forum | Thu Aug 25 10:17:48 EDT 2005 | davef
Send the pic to dave5252 at hotmail.com [you can't send pic through the SMTnet email thing] For more on via plugging, tenting, capping ... look here: http://www.merix.com/technology.php?section=processes&page=pdf/Via_Fill_Plug.pdf Something, a voi
Electronics Forum | Wed May 19 13:13:20 EDT 1999 | Dave F
| We care currently running into problems during our plug via process: | At the moment we plug prior to soldermask (LPISM) using epoxy resin - plugging takes place from the component side - however we are seeing solderballs after solder level.This is
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