Techies, I have a PCB that uses 30-40 T0-92 transistors. My problem is that when I wave solder these PCB's, the majority of them have solder bridges. I believe the pad-pad spacing ( 0.5mm) is the problem. Lead protrusion is 1mm, pad size 1.4mm. Direction thru wave -------------------> O O O Soldering 200-210F until 490F at wave -Tried temp increase Conveyor speed 4.2ft/min - Tried faster and Slower Cannot rotate PCB Have to use NOclean flux - Kester 951 I would like to know what is usually recommended or what some of you use at your companies. Any help would be greatly appreciated. Tom B. ################################################################ 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 ################################################################