> Hello Technet, > 1) I would like to better understand the relationship between smooth > and > shinning solder > joints and reflow profile.eg: i've used different types of > no-clean > solder pastes and observed differences in the solder joint > finish.Some are smooth and shinning while > others are somewhat dull and have scratchy lines on the solder > surface.i've tried to increase the soak zone dwell time but have not > been able to improve the finish. > > 2) can you also tell me if there will be any difference between sn63 > and > ag2 % alloys > with regards to the shinning joints? > thanks. > kelvin. ################################################################ 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 ################################################################