Electronics Forum: lead bga (Page 1 of 69)

castellated lead aperture design

Electronics Forum | Thu Oct 25 21:33:24 EDT 2007 | hussman

Castellated is the easiest lead design. Anything longer than the out side dimension of the part should be OK. However, you will never get an inspection person to say it looks OK, yet the solder joint occurs on the bottom side of the part - like a B

I want to learn about bga technology from a pick and place mache

Electronics Forum | Thu Jul 15 12:09:10 EDT 2010 | wrongway

if the BGA has leaded balls use leaded paste if the BGA has lead free balls use lead free paste and set your oven profile to match the paste

I want to learn about bga technology from a pick and place mache

Electronics Forum | Fri Jul 09 20:39:31 EDT 2010 | malcolmlanders

I have never placed a bga chip before and need to know some o0f the basics of how to do it. I am really intrested in how the stencil will work with the soider and if there is a special soider that i need to use. I usually use a leaded soider from man

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Wed Jun 16 11:27:06 EDT 2004 | larryk

If you did not increase your heat to melt the lead free BGA balls, I would be very concerned.

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Sun Jun 13 07:57:15 EDT 2004 | Grant

Hi, We have been offered some lead free BGA parts in place of normal lead solder BGA parts in our process, and because we can get them faster it would be a good option. However does anyone know if we can use them as normal. I assume the balls won't

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Fri Jun 18 20:29:39 EDT 2004 | Ken

The problem is lead enrichment regions forming in the hottest part of the joint. The lead pool is the weakest part of the (SMT) joint. In TH interconnects hot tear or pad lift can result. I have recently seen this first hand.

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Sun Jun 13 08:01:50 EDT 2004 | Grant

Hi, Oops, looks as though this has already been covered in another thread. However it was not clear if anyone's done this, and if it worked ok. We only need to do a few hundred boards. Regards, Grant

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Sun Jun 13 18:44:54 EDT 2004 | Ken

If the balls are SAC then you may actually reflow them at 217C. Of course, I may be assuming they are SAC...

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Mon Jun 14 14:53:43 EDT 2004 | russ

Yes you can, we have done it for years. Russ

Can I use lead free BGA parts in a lead based process?

Electronics Forum | Tue Jun 15 03:24:56 EDT 2004 | Grant

Hi, Great, and thanks for the info, it's a big help to know someone's actually done it, and so we will give it a try on a few dozen product, and see what happens! Thanks again for the reply! Regards, Grant

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