Mike, I would also mark: * any reference to internal standards * instructions clarifying any funky ECO, that adds parts non-existent in the artwork, that are assembled in weird positions. If this is not the case, I would still mark a history of the revisions and the ECO numbers * any reference to instructions on components that have special forming * who provides the serial number structure (customer or CEM) and reference to the documentation on how to create the labels Besides that, I will revise our instruction set, to include some of Richard's notes. Regards, Ioan > -----Original Message----- > From: TechNet [SMTP:[log in to unmask]] On Behalf Of Stadem, Richard > Sent: Wednesday, November 16, 2005 9:25 AM > To: [log in to unmask] > Subject: Re: [TN] Assembly Drawing Notes? > > Hi, Mike. > Here are some other standard notations, if they apply. > All finished dimensional limits, such as maximum component height, to > avoid any interference fit issues. Maximum lead protrusion for any > through-hole parts. Conformal coating type, method of application, > hardness, and keep-out areas. Which components are to be epoxy staked, > and method (spec number). If flipchips are present, the requirement for > underfill and globtop should be in the notes. Torque settings for screws > and other hardware are often overlooked. Some people put programmed part > notations on the drawing, so the documentation person does not overlook > that step on the traveler or routing (nothing worse than having several > hundred assemblies built up with Eproms not yet programmed). Design 0,0 > point and XY coordinates of tooling holes is standard on all assembly > drawings. Thermal heatsinks should be noted on components that require > them, and the thermal grease, sil-pad, etc. noted. > Pin 1 notations (connectors) should be noted, and polarity should always > be easily seen. The location for marking the serial number, revision, > and the method is standard boilerplate. Handling to an ESD spec and to > an MSD spec and the appropriate Mil-handbook is always noted, and the > ESD symbol is on every assembly drawing with ESD parts. > And of course, the revision history and ECN listing must be on every > drawing. Statements of proprietary, classified information, copyright, > and ITAR warnings should be present if they apply. Dimensions are to be > noted as to millimeters or inches. Method of creation is always a good > idea (Mentor Graphics EN2004, for example). > I'm sure I've missed something here, but that is all I can think of. Any > others out there? > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Michael McMonagle > Sent: Wednesday, November 16, 2005 7:32 AM > To: [log in to unmask] > Subject: [TN] Assembly Drawing Notes? > > We are updating some PCBA assembly drawings, and looking for a little > guidance on notes to include on the drawings. Current standard notes > include: > > > > - Solder alloy required > > - Assembly processes to be in accordance with latest rev > ANSI/J-STD-001 Class XX > > - Workmanship to be in accordance with latest rev IPC-A-610 > Class > XX > > > > Other than additional notes for idiosyncrasies specific to a given > assembly, are there any other 'boilerplate' notes we should incorporate? > > > > Mike McMonagle > > Quality Engineer > > OYO Geospace > > 7007 Pinemont Drive > > Houston, TX 77040 > > 713-986-8650 > > > > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or > (re-start) delivery of Technet send e-mail to [log in to unmask]: SET > Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the > posts: send e-mail to [log in to unmask]: SET Technet Digest Search the> > archives of previous posts at: http://listserv.ipc.org/archives Please > visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for > additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 > ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------