You've done your homelesson well, and are of course curious on what grade you got. Some of you were very close, especially after I gave the thread 'clay'. Certain aluminium bearing clays (bauxit) can be refined and processed to ceramic tapes (HTCC) and a few of you guessed right: it's a aluminum oxide substrate, but not a simple one. No, the tapes are processed in BIG BLUE's plant in Boeblingen. At that time probably the most advanced Multi Chip Module factory in the world. I visited that wonderland many years ago, in order to buy very advanced LTCCs, but they had concentrated on HTCC. What you see on the photo is a little multichip module for a supercomputer, that I think was never finished. The module has over 50 layers, front side has about 15,000 pads and the backside about 1,000 I/Os! I thought the module was a sample for me, but realized that this was a mistake. Nobody reflected when I put it in my pocket and went home. However, I did not show it other than internally at my company. I don't know what IBM makes in Boeblingen today, but I think the superadvanced module manufacturing was closed, of some reason I don't know about. The plant was fully automated and was a dreamland for a guy interested in multichip module production. Next week, I'll increase the degree of difficulty. The one who guess right then will be get the title "TNY" (TechNet's Yoda). Inge ----- Original Message ----- From: "Ingemar Hernefjord (KC/EMW)" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, September 28, 2006 9:22 AM Subject: [TN] NTC: prepare Friday question Hi all, am sending a picture to Steve McGregory for his exhibition wall. You are asked to guess what the picture is showing, a modern kitchen equipment or what? On Friday you will see how good you were. Inge --------------------------------------------------- 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 -----------------------------------------------------