BGA inner hairline crack

Subscribe to Thread

Hallo all, when I remove one from us malfunction BGAs from... - Sep 04, 2009 by Radek

Hello Radek, Does a new (unbaked) BGA exhibit the same cr... - Sep 09, 2009 by CL

Radek

#59786

BGA inner hairline crack | 4 September, 2009

Hallo all, when I remove one from us malfunction BGAs from PCB I saw under X-ray inspection inner hairline crack.(see fig.1.) BGA was dried according to J-STD 033 and reflowed in lead process. When I look at new (baked BGA) under X-Ray inspection I see the same crack line at the same position.(see fig.2.) Have somebody here any experience with this one?

Thanks

Radek

Attachments:

reply »