Technos, We intend to buy a X ray inspection system to inspect BGA components after oven reflow process . I have 3 question about that It is really necessary have a X ray system or the process can survive without it ?. What is the usage during production ( sample or 100 % ) What is the expected rejection rate for BGA ? Thanks ################################################################ 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'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 ################################################################