Electronics Forum | Thu Aug 05 12:20:06 EDT 1999 | John Thorup
| | | | | | | | | | | | | | | Hello, | | | | If you are using no-clean and they are entrapped in the flux it is also IPC accepted but i havent found a customer yet who agrees with that. Im sure you have checked your profile. I had the same problem
Electronics Forum | Sat Aug 07 11:47:47 EDT 1999 | JohnW
| | | | | | | | | | | | Hello, | | | If you are using no-clean and they are entrapped in the flux it is also IPC accepted but i havent found a customer yet who agrees with that. Im sure you have checked your profile. I had the same problem with chi
Electronics Forum | Tue Jul 27 14:56:23 EDT 1999 | John Thorup
| | | | We are currently using a 65/35 solder for our wave process but are considering switching to a 63/37 for a substantial cost savings. No one here seems to know why we everused a 65/35 formulation in the first place. | | | | I understand 63/37 t
Electronics Forum | Mon Jul 26 10:25:12 EDT 1999 | Boca
| | We are having a process related problem with pullup resistors on a controller card which has a I960 micro-processor. | | The controller monitors signal inputs and it's own resources then blinks a LED to indicate its working. The problem is that a
Electronics Forum | Mon Jul 26 14:14:51 EDT 1999 | Steve Gregory
| | | We are having a process related problem with pullup resistors on a controller card which has a I960 micro-processor. | | | The controller monitors signal inputs and it's own resources then blinks a LED to indicate its working. The problem is th
Electronics Forum | Sat Jul 24 00:04:55 EDT 1999 | Scott McKee
| | | There is a practise within the industry of an Inspector inspecting a board, and that same Inspector performing touch-up. My opinion is that the Inspection and Touch-up operations should be separate functions whereby the Inspector is not perform
Electronics Forum | Wed Jul 07 22:12:26 EDT 1999 | Dreamsniper
| | | | We are looking for some subcontractors to do surface mount | | | | technology boards for us. Is there anything I should pay specific | | | | attention when I visit the subcontractor's site? | | | | Thank you for any advice | | | | | | |
Electronics Forum | Mon Jun 28 11:51:36 EDT 1999 | Brian Wycoff
| | | | Dear guys, | | | | | | | | I have some problem on assembling micro-BGA with solder paste (63/37). The micro-BGA we assmeble is 0.75mm pitch and with 45 pin (solder bump is 96.5/3.5Ag). The stencil is a laser-cut stencil with 5 mil thicknes
Electronics Forum | Fri Jun 25 01:11:31 EDT 1999 | Vinesh Gandhi
| | | Recently, there has been an upsurge in the Pin Hole/Blow Hole problem in our wave soldering process. We are baking the PCBs for 2 Hrs. at 125 degree C. The Wave Soldering profile seems to be O.K. Still the problem is persistent. Can somebody
Electronics Forum | Sat Jun 12 16:33:52 EDT 1999 | JohnW
| | Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the head at 2 in/lbs. This being down from manuf
