Richard, Try looking in the JEDEC Publication 95, under the CO- and CS- standards. They specify which tray size and type are applicable for what size QFP, TSOP, TSSOP, and BGA components (tube packaging is also included). You can find these at the IPC/JEDEC website at: http//:www.jedec.org . You will also find that some vendors do not always use JEDEC registered packaging. > Howard A. Cyker > Lucent Technologies > Email [log in to unmask] > Phone 978-960-2964 > > > ---------- > From: Hamilton, Richard CLE 4454[SMTP:[log in to unmask]] > Reply To: TechNet E-Mail Forum.;Hamilton, Richard CLE 4454 > Sent: Thursday, November 04, 1999 7:06 PM > To: [log in to unmask] > Subject: [TN] QFP Tray Packaging > > Hello all again, > > One day I will learn how to 'speak' English. I apologize for not making > myself clear the first time around. > > I am not looking for specifications for the component packaging, I need to > find out what industry standards there are for the presentation of the > components to automatic equipment. In other words, QFP's come on trays, > what > is the specification for the trays that these come in. > > i.e., > What is the minimum and maximum size of tray? > What polarity marking should one expect to find on a tray? > What, if any, quantity of mixed oriented devices are allowed in a tray > from > the distributor/manufacturer? > What is the relationship of tray polarity to device polarity? > What size devices are expected in what size tray? > > Like tape and reel specs for thru-hole packing. I have only found the > IPC-481 series which deals with the carrier taping. I believe I have that > much under control, however I do need to address trays and tubes at least. > > Maybe I am out to lunch on this issue? (Is that why I am this big?) I know > we made good use of industry standards for TH tape and reel specifications > and I am assuming (LOOK OUT!!) and/or hoping that there are similar > documents in the SM world!? > > My immediate issue comes from the fact that we are getting some QFP's with > all the devices oriented in the same direction to each other, however, > that > direction may not always be the same relative orientation to the tray they > are supplied in. I need to tell our vendors we want all parts supplied > with > the same orientation, but I do not want to re-invent the wheel so to > speak! > (OK, who said that.... I am not lazy,....well.....OK.....when you put it > that way!) > > Still lost and flapping my wings! > > Richard Hamilton > Clemar Mfg. / Rain Bird > [log in to unmask] > > ############################################################## > TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for > additional > information. > If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or > 847-509-9700 ext.5365 > ############################################################## > ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################