Doug: In addition a bold letter heading should be used for every........*****Headings**** only is what I wrote. Ramon -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas O. Pauls Sent: Wednesday, November 16, 2005 12:19 PM To: [log in to unmask] Subject: Re: [TN] Assembly Drawing Notes? Ramon, While I don't disagree with you, if you put the "really important stuff" in Bold Text or otherwise emphasized, how long do you think it will take before the whole notes section becomes bold face or emphasized? Doug Pauls "Dehoyos, Ramon" <ramon.dehoyos@NG C.COM> To Sent by: TechNet [log in to unmask] <[log in to unmask]> cc Subject 11/16/2005 08:57 Re: [TN] Assembly Drawing Notes? AM Please respond to TechNet E-Mail Forum <[log in to unmask]> ; Please respond to "Dehoyos, Ramon" <ramon.dehoyos@NG C.COM> I believe that many drawing are very difficult to read. For example there will be some notes about conformal coating on an area ( i.e. note 8 )and add-ons about the same matter on note 37 and 45. The drawing should be planned from the beginning. Lets say note one should be used exclusively for hardware type of issues on all drawings. Note two for type of ink or labeling instructions and so on, so that a drawing can be easily followed. In addition a bold letter heading should be used for every note, such as ****PCB MATERIAL**** or ****CONFORMAL COATING*** There is no bold letter option so I am using the * asterisk symbol. It is just one man's opinion. Ramon -----Original Message----- From: TechNet [mailto:[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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------