Electronics Forum: double reflow bga (Page 11 of 198)

Re: Damaged/dislodged components when doing second side of double sided reflow

Electronics Forum | Mon May 08 12:02:14 EDT 2000 | Wolfgang Busko

The human machine is one of the most sophisticated know on this planet, "capable" of doing/thinking more than one task/thought at the same time. Sometimes the priorities get mixed up. So, if you have no simple computer or other gadgetry that�s able t

BGA reflow on bottomside

Electronics Forum | Tue Nov 20 04:48:21 EST 2007 | beta

Hi all, I have never had to run a product with BGAs on the bottomside of a double sided board. I was just wondering if this is a done thing ? or should I stay well clear. any replies appreciated. aj...

UBLOX Tim-4A reflow problem

Electronics Forum | Fri Dec 08 19:09:44 EST 2006 | darby

I have just started production run using this component. After reflow I see that there is an undercut of solder between the pcb and the lead instead of a fillet. This means that some of the leads are sitting above the solder with no wetting to the co

Re: BGA fab: what's reasonable practise for double sided PCB?

Electronics Forum | Thu Jul 15 19:14:08 EDT 1999 | Gord Wait

Thanks for all the feedback. I'm going for the tsop's on back, with approval from manufacturing, of course. This forum is just what the doctor ordered!

Re: BGA fab: what's reasonable practise for double sided PCB?

Electronics Forum | Thu Jul 15 17:53:34 EDT 1999 | Boca

| I'm designing a board where the parts will only fit if I do one of the following: | | 1. Put BGAs on both sides | | 2. Put BGAs on top, smt TSOPs directly underneath and using blind vias to keep the real estate on the bottom side below the BGA pa

BGA fab: what's reasonable practise for double sided PCB?

Electronics Forum | Thu Jul 15 14:18:24 EDT 1999 | Gord Wait

I'm designing a board where the parts will only fit if I do one of the following: 1. Put BGAs on both sides 2. Put BGAs on top, smt TSOPs directly underneath and using blind vias to keep the real estate on the bottom side below the BGA parts. Can

Re: BGA fab: what's reasonable practise for double sided PCB?

Electronics Forum | Thu Jul 15 16:59:57 EDT 1999 | Glenn Robertson

| I'm designing a board where the parts will only fit if I do one of the following: | | 1. Put BGAs on both sides | | 2. Put BGAs on top, smt TSOPs directly underneath and using blind vias to keep the real estate on the bottom side below the BGA pa

Re: BGA fab: what's reasonable practise for double sided PCB?

Electronics Forum | Thu Jul 15 21:18:27 EDT 1999 | Scott McKee

| I'm designing a board where the parts will only fit if I do one of the following: | | 1. Put BGAs on both sides | | 2. Put BGAs on top, smt TSOPs directly underneath and using blind vias to keep the real estate on the bottom side below the BGA pa

BGA Bouble sided reflow overlapping

Electronics Forum | Wed Jan 05 11:01:37 EST 2000 | Ron Lahat

I have in design a 400mm x 400mm pcb 3.0 mm thick heavily populated with BGAs 50 mil pitch and want to run a double sided reflow process with overlapping BGAs (CS/PS) 1. can I avoid a selective jig for PS BGAs?(weight calculation ?) 2. Is it possibl

Re: Double-sided reflow with BGA??? Can it be done?

Electronics Forum | Tue Sep 15 09:04:57 EDT 1998 | Chrys

| I was wanting to know if double sided reflow can be done with a metal plated BGA on topside. We would be running bottom side first. My boss seems to think the only way it can be done is by placing glue dots on the bottomside compoents because the


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