From: http://www.necel.com/pkg/en/mount/3/3_3/3_3_5/index.html
[Baking time] The recommended baking time is indicated by using the symbols, each consisting of two numerical digits, shown in the table on the right. Symbol Baking Time (When Stored at 125°C) 00 Baking unnecessary (0 hours) 10 10 hours MIN., 72 hours MAX. 20 20 hours MIN., 72 hours MAX. 36 36 hours MIN., 72 hours MAX. On Thu, 2006-06-08 at 08:58 -0400, Randall Nortman wrote: > I've got some LQFP chips that I've been storing, with the bag opened, > for a bit longer than I really should have. The indicators on the > humidity cards have started to turn pink, so I'm worried that they > will have absorbed too much humidity and if I try to reflow them now, > they'll "popcorn" (i.e., trapped moisture turns to steam and > evaporates, cracking the package and/or die). Anybody have any > suggestions on the best way to do this using common household > equipment? I guess I just stick them in an oven at lowish temperature > for a while, but what temperature and for how long? I checked the > datasheets for the chips (Atmel AT91SAM7X256 and Micrel KS8721CL) and > didn't see any useful information.
