Electronics Forum: plate (Page 214 of 260)

baking boards, revisited

Electronics Forum | Fri Oct 04 11:34:42 EDT 2002 | Bob Willis

Some additional comments from a paper may be of interest. Baking Printed Circuit Boards - Why and How Baking printed boards prior to conventional and surface mount assembly should not be necessary. Often boards are baked for historical reasons; in

PIHR Inspection Criteria

Electronics Forum | Thu May 17 07:36:40 EDT 2001 | Bob Willis

Here is a copy of a draft document on PIHR Inspection I have jotted down on a flight to Scotland yesterday, any comments suggestions etc ? I have already most of the photos for the standard but as you know there is nothing in the IPC document it just

Re: all powerfull UP78..or is it..?

Electronics Forum | Fri Apr 30 11:03:27 EDT 1999 | Wade Oberle

| | Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | | | My question's are really : | | how is the

Re: no-clean process / Got Dendritus Eh?

Electronics Forum | Sat Sep 26 19:09:17 EDT 1998 | Graham Naisbitt

As an addendum to Daves posting, please consider that: There is no such thing as no residue fluxing. A no-clean must herefore, have benign residues - in other words, they are not as efficient at removing surface oxides to enable good solder joints. S

Re: BGA ball missing.

Electronics Forum | Sun Aug 30 16:36:31 EDT 1998 | Steve Gregory

Hi Kc! I went to Surface Mount International last week, and had a chance to see a way to reball BGA's that is very simple, and not expensive at all. I've seen the advertisements in a few magazines, but this was the first time I've seen it live. It's

Micro Leadless Frame - solder wetting control

Electronics Forum | Wed May 08 23:18:58 EDT 2002 | ianchan

Hi mates, have this SMT production issue : A) We have a leadless-chip-carrier(LCC) IC package that is classified under the Land-Grid-Array(LGA) package family. B) The LCC is 4mm x 4mm, and has 28 tin plated pads located beneath the outside perimet

Re: Help! 2-layered Thru-Hole PCB Solder Mask/Soldering Problem

Electronics Forum | Thu Sep 30 03:17:45 EDT 1999 | Brian

| Hi everyone, | | Greetings! | | I�ve got a 2-layered through-hole PCB�s having the following problems: | | Solder Mask peels after wave soldering at random locations and only at the bootom side of the PCB | Insufficient Solder and some solder ne

Re: PCB Support Methods @ the Fuji.

Electronics Forum | Thu Sep 23 17:28:54 EDT 1999 | JohnW

| | | Question for you SMT guru's out there. | | | | | | What is the best way to support boards on Fuji's CP6 machine's x-y table...particularly for 2nd side SMT where the support side already has parts... I am toying around with the following meth

Re: Missing SMT Chip Components

Electronics Forum | Wed Sep 15 03:11:33 EDT 1999 | Charles Stringer

| | | Hi, | | | | | | Recently encountered missing components problem at the SMT process. | | | Among 13 chip components from the same part number mounted on the board, only 4 ( located in a same row and next to each other) were missing after post r

Re: Solder Beading Solder Balling

Electronics Forum | Sat Aug 07 11:47:47 EDT 1999 | JohnW

| | | | | | | | | | | | Hello, | | | If you are using no-clean and they are entrapped in the flux it is also IPC accepted but i havent found a customer yet who agrees with that. Im sure you have checked your profile. I had the same problem with chi


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