Steve, My gut tells me to bake the PLCC-68's. In a prior life, with plastic components, we had a time with them after they sat in a "controlled" environment for extended periods of time. The components were baked out ~ 100C for a few hours. Sometimes we used a vacuum oven to remove the moisture at a lower temperature. Granted that was in a conservative high reliability space application, but moisture is still a concern irregardless of the application. Our view was when in doubt, bake-out (solderability issues not withstanding). You may want to talk to the supplier to see if his tape and reel materials could survive these temperatures. Hope this helps. Good Luck. On a similar topic, during those days (circa 1993-1994), we performed an experiment to determine how much moisture would be absorbed by various board materials after performing a semi-aqueous cleaning process. We determined that after ~ 1.5 hours ar 125C, the amount of moisture within the board materials were neglilible (It's one of those things where my colleagues and I should have written a paper on it). My question is has anyone ever documented the rate of moisture removal from various boards and component materials at different temperature? Just curious. Lee Whiteman Senior Manufacturing Engineer American Competitiveness Institute E-Mail: [log in to unmask] Ph: (610) 362-1200 x208 Fax: (610) 362-1290 This message is for informational purposes only and does not supersede, modify, or create any agreements with ACI. Information contained in this message does not bind ACI or its affiliates to any commitment, either express or implied, unless ratified in writing by an authorized representative. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stephen Gregory Sent: Wednesday, June 15, 2005 9:42 AM To: [log in to unmask] Subject: [TN] Baking PLCC-68's... Just wondering, how many of you have ever baked a PLCC-68? We've been raising the awareness level of our stockroom people about component moisture sensitivity, and we've got some PLCC-68's that are on a reel and been sitting on on our stockroom shelf for longer than 168-hours. Well, we got another reel of the same part number (it's an Intel i960 PLCC-68) that came to us from Avnet in a vacuum sealed bag with a level-3 MSL label on it. I've never baked a PLCC-68...should I bake the reeled parts that have been sitting on the shelf? Kind regards, -Steve Gregory- Senior Process Engineer LaBarge Incorporated Tulsa, Oklahoma (918) 459-2285 (918) 459-2350 FAX __________________________________________________________________ This message may contain information that is privileged and confidential to LaBarge, Inc. It is for use only by the individual or entity named above. If you are not the intended recipient, you may not copy, use or deliver this message to anyone. In such event, you should destroy the message and kindly notify the sender by reply e-mail. --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------