Electronics Forum: plug (Page 1 of 49)

Brd(Electroylic Gold finishing) got blisters

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

Re: Via in the middle of a pad

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

best way to get power to PCB

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!

BGA Via Plugging

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.

Mains adapter problem

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 +

via hole plugging

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

Brd(Electroylic Gold finishing) got blisters

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

Re: via hole plugging

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

Re: via hole plugging

Electronics Forum | Thu May 20 07:53:55 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.Thi

Plugging of via through holes

Electronics Forum | Wed Jul 23 08:18:29 EDT 2008 | davef

Q1. Is this a standard process for plugging? A1. Not as such. We checked both IPC-6012 and IPC-SM-840. Neither comments on plugging. So, your fabrication notes rule the day. Q2. Is this okay for such thick PCB's or is it mandatory to use a special pl

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