Brian, et al... There has been considerable discussion of this topic on the TechNet forum. Before you reinvent the wheel, I invite you to go to http://jefry.ipc.org/archives/ and do a search. Jack --------------------------------------------------------------------------------------------------------------- IPC HAS A NEW PHONE SYSTEM!! EXTENSIONS HAVE CHANGED!! Be sure to listen to the prompt for new directions. IPC/SMTA Electronics Assembly Expo Technical Committee Meetings, Conference, Exhibits Providence RI October 24-29 More info at http://www.ipc.org Jack Crawford, IPC Project Manager - Assembly 2215 Sanders Road, Northbrook IL 60062-6135 [log in to unmask] NEW DIRECT NUMBER 847-790-5393 fax 847-509-9798 >>> Brian Rusten <[log in to unmask]> 10/11/98 10:28PM >>> Dear Designing Folk One of our PCB Manufacturers has recently started using the "Omikron" (Immersion White Tin) process as an alternative to Hot Air Leveling. They are asking us (the designers) whether they can use it for our boards. Does anyone know of any particular adverse design implications of using this process? Do you know (even as hearsay) of any problems with the process? I know this isn't really a Designer Council question, but then I thought : "What the hell. These people probably know about it, and don't feel the need to show off their chemistry degree in their answer." (You can tell I've spent some time reading the TechNet list, can't you?) [Even so, I will ask this question of the TechNettes, just leaving out some of the editorial content] Thanks, and Regards Brian Rusten Contract PCB Design Engineer JNA Telecommunications Ltd Ph (02) 9935 5777 Fax (02) 9417 3862 (Now "A Lucent Company") ################################################################ DesignerCouncil E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE DesignerCouncil <your full name> To unsubscribe: SIGNOFF DesignerCouncil ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ DesignerCouncil E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE DesignerCouncil <your full name> To unsubscribe: SIGNOFF DesignerCouncil ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################