Hi, We are looking into the use of uBGA's (0.8mm pitch). Currently we are developing a test board to trial the placement / soldering etc of these uBGA's Does anyone have any suggestions on what are the best surface finishes, (or ones to definitely steer clear of)? Also any suggestions for some features we should place on the test board which could be useful for this test? This is our first attempt with BGA's so any advice will be much appreciated. Thanks in advance, Craig McGlinchy PCB Designer Tait Electronics Ltd New Zealand Ph 64 3 358-3399 extn 8509 Fax 64 3 358-0432 Email [log in to unmask] ################################################################ 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 ################################################################