I wince at the thought of operators picking up (POLAR) tantalum caps off the floor and placing them by hand. Too much potential for placing in the wrong polarity. Tantalum caps don't like that much... Nancy Reynolds Dean Lillibridge <[log in to unmask]>@IPC.ORG> on 08/15/2001 02:57:32 PM Please respond to "TechNet E-Mail Forum." <[log in to unmask]> Sent by: TechNet <[log in to unmask]> To: [log in to unmask] cc: Subject: Re: [TN] Fallout I agree with not using fallout if you can help it and certainly if it's dropped to the floor, don't even chance it. I would, however, have little reservation to a part that you can see and identify in the machine (resistor networks, marked I.C.'s, tantalum caps) when your assembly has to ship on Friday and the customer has only sent you the exact amount required for the build. This is especially common with vibratory feeder-fed parts. I've had several customers supply material in stick form and provide just what was required by the build. I'm not going to hold off revenue for a fallen tantalum cap. --Dean Lillibridge NEWvENTURE TECHNOLOGIES -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of John Brewer Sent: Wednesday, August 15, 2001 2:05 PM To: [log in to unmask] Subject: Re: [TN] Fallout >>"are your operators consciencious about picking up/saving and >>hand placing dropped parts?" Oh man....with all due respect, I'd surely not advise doing this. With the size of most SMT parts, the lack of marking, and the relatively cheap cost of most of them compared with the cost of diagnose> test> rework> retest, etc, I'd generally advise not ever doing this! If things are falling off in such quantities so as to make it economically feasible to reuse the parts, then the SMT process engineer should investigate the root cause and fix it, rather than try and reuse fallout.... Rgds and good luck! John -=-=-=-=-=-=-=-=-=-=--=--=-=-=-=-= John Brewer Square D Component Engineering Raleigh NC ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 --------------------------------------------------------------------------------- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------