Electronics Forum | Thu Aug 23 16:41:06 EDT 2001 | slthomas
Naw, the rest of the BOARD we use them on. Same assembly. Actually we use them on one other assembly and have the same problem. Same oven, same line, same paste, same problem. I've tried to get the production super. to move them to another line w
Electronics Forum | Wed Sep 05 08:22:48 EDT 2001 | davef
Jack Crawford, IPC Director of Assembly Standards and Technology says "IPC-7912 is used for end-item DPMO calculation; one gathering of DPMO data at the end of the entire assembly process. IPC-9261 will be used throughout the manufacturing process so
Electronics Forum | Tue Sep 18 09:13:13 EDT 2001 | davef
Those of us that appear deaf are only faking. So, you need not yell. Responding to your question, consider: * Contacting the contractors and ask them for the information you desire. Most of the larger contractors are public companies. So, much of
Electronics Forum | Fri Nov 09 20:33:28 EST 2001 | caldon
There is two directions I see here...1) you are looking for a bid comaprison or 2) you are going to build boards with the machines you cause they are not being used in full capasity. Some OEMs and/or CEMs charge extra for "cut tape" (Not full reel)c
Electronics Forum | Thu Dec 06 19:46:08 EST 2001 | davef
First, we�re assuming that we�re talking hot air solder leveled [HASL] bare boards, eh? Consider using A-600 - Acceptability of Printed Boards as the basis for discussing the bare board problems. It is the bare board analog of A-610 - Acceptability
Electronics Forum | Wed Mar 06 12:14:34 EST 2002 | caldon
We would benchmark our times with the most experienced operator and them boost the time by 1/3. Example: If it takes Mary 3sec to insert the component, 3 secs to clinch and cut the leads (it is not advised to cut the leads after soldering), and 8 sec
Electronics Forum | Mon Apr 08 20:43:58 EDT 2002 | davef
Regardless of the design technology of the board, we use shop floor management software that: * Calculates the period that it takes to assemble a job. Obviously, we enter product-manufacturing information [ie, BOM, material receipt dates, process fl
Electronics Forum | Mon May 20 10:49:12 EDT 2002 | geoff_goring
Are we saying then that IMC can occur at the solder / Cu pad join on the PCB when finished assembled? In our case we are being told that this process is starting before assembly. Is it fundamentally the same thing. i.e. will the Tin diffuse with th
Electronics Forum | Mon May 06 14:55:55 EDT 2002 | jdill
Hello Do any of you out there with Philips/Assembleon machines have any tips or tricks to repairing there feeders. I call Assembleon and one guy tells me to clean the heads and the feeders with a small lint free brush and to not use any oil on the he
Electronics Forum | Fri Jun 14 14:30:36 EDT 2002 | davef
Assuming you are talking about solderable surfaces: People specify various materials to protect the solderability of the pads on the board. Gold, actually, Electroless Nickel - Immersion Gold [ENIG], is popular. * Board fabricators like it because
