Hi, For auto. placement of SM connectors with plastic lugs, what's being used by companies generally. Ok, the important tolerances are PCB (PWB) drilling, placement accuracy of the equipment and the plastic mold. Do you just add the placement and drill tolerances together adding them to the maximum recommended hole dimension in the data sheet? Are there other factors? What are your practical experiences? What happens when the lugs miss the holes and the placement equipment continues to drive the lugs through the substrate? When you add up the possible tolerances, is there any point having lugs in the first place? Do connector companies consider auto. placement for these parts? Regards ################################################################ 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 ################################################################