From: Lucy N. Rojao Process Engineering and Development--Power Business Unit ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~ Subject: ASSY: PCMCIA Board Depanelizing Thank you, Lucy N. Rojao Phone: (416) 448-5866 Internet:[log in to unmask] Celestica Inc. *** Forwarding note from EMADKHAN--TORVMFG1 10/02/96 12:31 *** To: LROJAO --TORVMFG1 *** Reply to note of 09/30/96 17:28 From: EMAD KHAN Subject: ASSY: PCMCIA Board Depanelizing Here you go Lucy...this might help: The most efficient depaneling techinque for PCMCIA cards is having an inline routing operation. The method can be extremely costly but yields great results with speed. Problems, however, can be incountered in panelizing PCMCIA cards. One may be restriced to three to six cards per panel due warpage issues. Normal inline routers can depanel 9 PCMCIA cards at a time. If the full capabilities of routing are not to be utilized then this might not warrant the costs involved. Break-off tabs are farely reasonable. You would have to experiment with how many you would need to ensure stability in your panelization. Break-off tabs also leave a rough finish in your product. Another concern of break-off tabs is the possibility of introducing solder defects when ripping a tab off (especially on thin cards). One must also not position them close to any egde component (ceramic components in particular). I would recommend a shearing machine for low to medium volume productions. Shearing can achieve quite tight tolerances with an excellent finish. Fixturing and the problem of edge components is a concern when implementing this type of process. Regards Emad O. Khan Power Products Paneling Engineer Depaneling Engineer (Site Support) Advanced Products Mechanical Assembly Engineer Process Engineering Department 110 (416) 448-4738 *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************