Electronics Forum | Fri Jul 16 17:49:06 EDT 1999 | JohnW
| | Hello, | | i'm looking for informations about companies which are using system to verify the loadind of a SMT machine by using barcode (on the slot on the machine & on the reel). | | I'm in charge of the installation of this kind of system. | |
Electronics Forum | Thu Apr 29 00:00:50 EDT 1999 | FAC
| | Hi everyone, | | We started our first machine placed shield test today.We will be machine placing shields with in the next two months. I used a Fuji Qp242 today. There were no problems with pickup etc,. just vision errors. I'm sure we will work
Electronics Forum | Fri Apr 23 14:14:49 EDT 1999 | Chrys Shea
| Hi everybody, | | I would like to bench mark the quality out of our wave soldering m/c as far as DPPM levels are concerned. Can somebody provide me with some figures at their site or anywhere else for the same. | | Thanks | Upinder | ====== | We
Electronics Forum | Mon Apr 26 22:25:04 EDT 1999 | Big K
75) but the right thing is to change the light source in the robot that is rejecting PLCC's..it worked for us!!! | | Larry, | | | | I have seen this problem on our machine with PLCC 28's, same part same PD, same program except head 2 would place hea
Electronics Forum | Mon Apr 26 22:53:30 EDT 1999 | Dean
| Recently, we have been having problems with PLCC's passing vision on our IP's If the part is set up to be placed on Head 2, it will not always pass vision. However, if we move it over to Head 1, it will pass and place just fine. Now, I do realiz
Electronics Forum | Thu Jan 21 15:24:18 EST 1999 | Terry Burnette
| I have received prototype PBGA (256 pins) devices from | Motorola (actual part number = KXPC850ZT50). These parts seemed very warped on the edges. When I put the part on a plain surface, it rocks quite a bit when I press lightly on a corner. I h
Electronics Forum | Tue Jan 12 19:07:07 EST 1999 | Earl Moon
| | For process management with SPC of the stencil printing process with a fully automatic stencil printer, what process outpur parameter would you recommend for SPC? | | | | It appears to me that there are two options: | | A: to have a pn chart bas
Electronics Forum | Tue Jan 12 21:42:33 EST 1999 | Jon Medernach
What's important in stencil printing (which differs from screen printing) is providing a consistant volume of paste at each interconnect. The process window varies in proportion to the pitch. More than 60% of all defects are related to solder depos
Electronics Forum | Sat Aug 22 10:25:11 EDT 1998 | Ben Salisbury
| We are using PCBs of CEM3 Material with bare copper fiducials. The whole | board is of bare copper with a lacquer coating (Coats brother S2974). | The fiducials are of 1 mm diameter bare copper. we use Panasert MV2F as | well as Fuji CP4-3. In bo
Electronics Forum | Tue Aug 25 12:50:24 EDT 1998 | Lance Smalley
To see if the MV will recognize the marks, in the binary mode, when setting threshold (binary level), raise up the level until the edge of the mark starts to degrade. Write down the number. Lower the level until the fiducial starts to "bloom". Wri
