refer to "Multichip Module Technologies and Alternatives" by Daryl Doane and Paul Franzon for cost estimates. It's a pretty good book for estimating. Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to "Gagrani, Kishore" <[log in to unmask]> To: [log in to unmask] cc: (bcc: Jason Smith) bcc: Jason Smith Subject: [TN] No. of layers Vs Cost I understand that more no. of layers would increase the cost of PCB, but how is this function related ? Is there any formula (certainly will have many no. of variables) which can be applied to figure this out ? ################################################################ TechNet 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 TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet 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 TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################