Electronics Forum: microvias (Page 4 of 5)

Re: Through holes in SMT pads

Electronics Forum | Tue Jul 06 18:16:14 EDT 1999 | Boca

| | Is anyone aware of some guidelines regarding through-hole in SMT pads? One of our designers wants to add through-hole leads in some SMT pads for an inductor. The size of the hole is 0.032 inches and takes-up approximately 25% of the pad area.

Re: Via's in BGA pads

Electronics Forum | Wed Apr 21 17:11:05 EDT 1999 | Earl Moon

| Does anyone have any experience with soldering 50mil pitch BGA's that have a via in the pad, the size is .012 The via will be masked off on the bottom side of the board. Need to know what precautions or problems if any I might encounter. The proces

Re: Via's in BGA pads

Electronics Forum | Wed Apr 21 19:09:10 EDT 1999 | Earl Moon

| | Does anyone have any experience with soldering 50mil pitch BGA's that have a via in the pad, the size is .012 The via will be masked off on the bottom side of the board. Need to know what precautions or problems if any I might encounter. The proc

Re: Assembly of CSP on pads with vias.

Electronics Forum | Sat Jan 23 16:31:09 EST 1999 | Steve Gregory

| Hi Everyone, | We plan to build, for reliability/experimental/research purpose some CSPs (namely Tessera microBGA 46-I/O 0/75mm pitch and TI 64 I/O 0/8 mm pitch). the various factors that we plan to evaluate are the reliability and assembly concern

Re: Assembly of CSP on pads with vias.

Electronics Forum | Sat Jan 23 17:00:44 EST 1999 | Earl Moon

| | Hi Everyone, | | We plan to build, for reliability/experimental/research purpose some CSPs (namely Tessera microBGA 46-I/O 0/75mm pitch and TI 64 I/O 0/8 mm pitch). the various factors that we plan to evaluate are the reliability and assembly con

LGA36 6.5 x 3.5 mm

Electronics Forum | Thu Apr 12 22:54:06 EDT 2007 | mika

conductor on the narrowest place ~0.07mm we suggest them to go for a PCB solder pad down to 0.30mm. The Conductor width is: 0.2mm The current problem they are having now is that there will be a problem with 14V to narrow the conductor to the narrowe

via as test point

Electronics Forum | Mon Feb 26 20:02:42 EST 2001 | davef

First, I don�t understand why your board fabricator can�t do a good job plugging your vias. Additionally, when you consider that they forgot to plug the first batch of boards, it makes me wonder if they are desirable as a supplier. Generally, we us

A few more things

Electronics Forum | Sun Apr 25 04:34:09 EDT 1999 | Earl Moon

No this message isn't about my triumphant return. It's not even about that lady I wanted to run away with to Mehico (who were you again). It's about progress and some of you might be interested, or not. 1) For DEKheads, I submit we had two of Britai

Solder flow thru via on pad

Electronics Forum | Tue Sep 25 14:08:59 EDT 2001 | davef

Oooo, the solder on the pad and PGA ball is flowing during reflow down the via to the secondary side? Why didn�t you say so?? ;-) Why would you expect that gravity and capillary action wouldn�t force solder to flow down the solder plated via to the

Looking for a Book/Guide for PCB assembly using SMT

Electronics Forum | Mon Jan 17 07:48:37 EST 2011 | davef

SMTnet Newsletter Aug 1999 by B Ellis Title: A Comprehensive Guide to the Design and Manufacture of Printed Board Assemblies Vol. 1 & 2 Editor: William Macleod Ross Publisher: Electrochemical Publications Limited, GB This two-volume work can p


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