Electronics Forum: hello (Page 246 of 323)

Providing Thermal Relief On Vias

Electronics Forum | Wed Jun 03 13:51:57 EDT 1998 | Dave F

Hello: BACKGROUD: SMT components soldered on the top-side of boards that also require wave soldering have the potential to reflow during wave soldering. Reflowing these components during wave soldering is not good. It can cause cold joints, opens

Re: Surface Mount Solder Balling

Electronics Forum | Fri May 29 14:35:05 EDT 1998 | Steve Gregory

| We are getting solder balls after reflow of surface mount components. We are using a no-clean paste and a new jar seemed to help for a little bit. Any ideas? Thanks in advance Hello Ryan, There's a quite a few things that can cause solder bal

Cleaning PCB's after routing

Electronics Forum | Fri May 22 22:18:18 EDT 1998 | David Newman

Hello, I am looking for suggestions for cleaning pcb's after the routing (fabrication) process. Keep in mind that these pcb do not have components intalled on them yet. We have considered pre-drilling the routing plunge points, but cost and capacity

Re: MI Solder temp & RF routing

Electronics Forum | Mon May 11 13:59:53 EDT 1998 | Chris Fontaine

| Hello. | 1 Could anyone tell me the range of temperature | to solder MI components? The process eng is using 400~500 | degrees Celcius!! For standard 0805/0603 chips & TH components & | also to touch up on ICs. What is the con

Re: MI Solder temp & RF routing

Electronics Forum | Wed May 13 16:39:41 EDT 1998 | Herb Pabes

| | Hello. | | 1 Could anyone tell me the range of temperature | | to solder MI components? The process eng is using 400~500 | | degrees Celcius!! For standard 0805/0603 chips & TH components & | | also to touch up on ICs. What

Re: Alloy for solderballs search ?

Electronics Forum | Tue Apr 28 19:20:53 EDT 1998 | Steve Gregory

| We want to produce BGA�s which will be see burn in conditions | of 140�C / 24h active tested. | Now we think about problems for the solderball uniformity. | Does anybody know about problems or about special solderball | alloys for such productscon

Why does everyone want to x-ray BGA?

Electronics Forum | Thu Apr 16 21:33:25 EDT 1998 | Steve Gregory

Hello Ya'll, I've got what may be a silly question, but why does it seem so important to everybody that you have x-ray capability if you're thinking about doing BGA? I know what most people will tell me; "Steve, that's a pretty silly question

Re: Why does everyone want to x-ray BGA?

Electronics Forum | Mon Apr 20 13:52:19 EDT 1998 | G.Wenker

| Hello Ya'll, | I've got what may be a silly question, but why does it seem so important to everybody that you have x-ray capability if you're thinking about doing BGA? | I know what most people will tell me; "Steve, that's a pretty silly qu

Why does everyone want to x-ray BGA?

Electronics Forum | Thu Apr 16 21:30:59 EDT 1998 | Steve Gregory

Hello Ya'll, I've got what may be a silly question, but why does it seem so important to everybody that you have x-ray capability if you're thinking about doing BGA? I know what most people will tell me; "Steve, that's a pretty silly question

SM Equipment Opinions

Electronics Forum | Thu Apr 16 17:16:43 EDT 1998 | Richard

Hello, Our company has narrowed down the selection of SM equipment for a low volume production environment. I am soliciting opinions on manufacturers that we are considering. I would appreciate both positive and negative comments. Please resond to me


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