Steve, if the ceramic module is glass sealed, it should be OK from moisture sensitivity (only true hermetic seals are metal and glass seal). In the past, some of the ceramic body parts (for high temperature operation) have changed to polymeric seal (old days, some of vendor claim to pass the leak test... end up just the polymer absorbed He... rather than really valid test... another story)... that polymer sealed device might be moisture sensitive even with a ceramic substrate body and metallic cap... Just a guess...you really should go back to the vendor to get the answer... my 1.64 cents...jk ;-) -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Steve Gregory Sent: Monday, July 11, 2005 6:45 PM To: [log in to unmask] Subject: Re: [TN] Moisture Sensitive Components (again)... So typically, is this device moisture sensitive or not? BTW, the leads are gold plated... -Steve Gregory- Aluminum oxide is the principal phase most "Ceramic" packages, excluding most LTCC packages, IBM's low CTE ceramic, and the Hi-CTE ceramic packages that are available. Calling the PGA body an alumina ceramic or aluminum oxide ceramic is perfectly correct. It is understood that such a ceramic is about 90-92 wt % alumina. Best regards, Leo Leo M. Higgins III, Ph.D. Director of Applications Engineering ASAT, Inc. 3755 Capital of Texas Highway, Suite 100 Austin, Texas 78704 ph 512-383-4593 fx 512-383-1590 [log in to unmask] www.asat.com The information contained in this electronic message is CUSTOMER/SUPPLIER PRIVILEGED AND CONFIDENTIAL INFORMATION intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution and copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender by electronic mail. Thank you. -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Stadem, Richard Sent: Monday, July 11, 2005 4:21 PM To: [log in to unmask] Subject: Re: [TN] Moisture Sensitive Components (again)... Steve, Many out there are experiencing the same thing. But not for components such as aluminum oxide (not really ceramic) like what I think your picture shows. They may have lead-free finish on the pins, but that does not make them a candidate for special handling to prevent moisture-related expansion......usually. It is possible that there is a chance of damage within the encapsulant. Really hard to tell without consulting the vendor. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stephen Gregory Sent: Monday, July 11, 2005 4:00 PM To: [log in to unmask] Subject: [TN] Moisture Sensitive Components (again)... Hi all ya'll!! Haven't heard anything from my big mouth in quite a while have ya'? Well, I just got back from two glorious weeks of vacation in beautiful (but rainy) North Carolina...that's why I've been so quiet. Anyways, it's about Moisture Sensitive components. You may recall my posts from a while back about us trying to get our stockroom people more in tune with MS components and proper handling, and they've been doing a great job. They come to me with a lot of questions and I actually like that. Shows me that they're trying to make sure they get it right. Well today one them came to me today with some parts that were packaged and labeled MSL 3, but they were ceramic Pin-Grid-Arrays?!? You can how they were packaged and labeled at: http://www.stevezeva.homestead.com click on Picture Page 2 and look at Ceramic PGA Packaging to see how they came to us. I've always thought that ceramic parts were not subject to moisture related concerns, am I wrong once again? It's a Cypress part, PN # 5962-9759802QXC (Military part). I called Cypress, to verify if it was a MS component or not, and got their outsourced technical support line (I think from India), and I was told I had to "submit a case" email to get my question answered. I think somebody suggested last time when I posted about this, that distributors are putting MSL labels on everything just to be safe, whether a component is MS or not....are any of you experiencing this? Kind regards, -Steve Gregory- Senior Process Engineer LaBarge Incorporated Tulsa, Oklahoma (918) 459-2285 (918) 459-2350 FAX --------------------------------------------------- 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 -----------------------------------------------------