Hi Jonathan There is a nice book which contains exactly what you are asking for. It is called "Design guidelines for surface mount and fine-pitch technology" by Vern Solberg. Jonathan A Noquil wrote: > > Hello technetters, > > Anyone out there knows about where can i find a pcb design specs for SMT? > For example what is the minimum or maximum solder thickness on pads. > I just wondering if the chips directly attached on board can result in cracking > due to the solder > > Appreciate you help > > ############################################################## > TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional > information. > If you need assistance - contact Keach Sasamori at [log in to unmask] or > 847-509-9700 ext.5315 > ############################################################## -- Best Regards Khaled H. Fouad ========================================== Manager, PCB Design Division Research & Development Department Tel.:+2011333414 Ext. : 312 Fax.:+2011335613 BAHGAT Group (http://www.bahgat.com) Email : [log in to unmask] ========================================== ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################