This is an issue that PLAGUES the industry. We have in use the following: Automatic placement equipment Polarity overlays ICT Visual inspection Critical Item Inspection lists (pointing out cautions to the inspectors) And STILL we have reversed components due to: Hand placement of components (even with auto equipment, there appears to be an incredible amount of hand intervention due to machine mischucks, reel changes, etc) Small lots - this causes purchase of some component in other than a reel which bypasses AUTO equipment. Tape and reel errors from suppliers/in house T&R Operator error If ANYONE can improve on these processes, let me know. I would be a miracle worker in my company! Jan Pelchat ______________________________ Reply Separator _________________________________ Subject: <no subject> Author: [log in to unmask] at 0UTG0ING Date: 8/6/98 8:24 AM Hello, I am interested in a solution to installing tantalums in reversed. Plus symbols, silk-screen marking, etc. have proven inadequate. Failures come after many hours of reverse polarity in some applications. Are there any ideas on how to physically or otherwise prevent this. Thank you, Rich. ################################################################ 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 ################################################################ ################################################################ 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 ################################################################