Electronics Forum | Wed Sep 15 20:30:57 EDT 1999 | Bach Huss
| | Hi, | | | | Recently encountered missing components problem at the SMT process. | | Among 13 chip components from the same part number mounted on the board, only 4 ( located in a same row and next to each other) were missing after post reflow. C
Electronics Forum | Wed Jul 21 20:52:52 EDT 1999 | Scott
| | I have pcb's in which i am experiencing warping. | | the boards are 12.8125" on a diagonal measurement. | | they are out approximatley .010". | | the boards are combination thru-hole,smt, they also have 3ounce copper.what is acceptable,and what i
Electronics Forum | Thu Jul 22 06:54:45 EDT 1999 | Earl Moon
| | | I have pcb's in which i am experiencing warping. | | | the boards are 12.8125" on a diagonal measurement. | | | they are out approximatley .010". | | | the boards are combination thru-hole,smt, they also have 3ounce copper.what is acceptable,an
Electronics Forum | Tue Jun 22 20:41:47 EDT 1999 | Dean
| I was wondering if anybody could give an estimated cost of equipment maintenance per year for a complete SMT line for | a medium volume facility? | Equipment maintenance falls distinctly into two categories. 1. Preventative maintenance. 2. Fail
Electronics Forum | Wed Jun 23 12:22:11 EDT 1999 | John Martell
Thanks, that makes sense. | | I was wondering if anybody could give an estimated cost of equipment maintenance per year for a complete SMT line for | | a medium volume facility? | | | Equipment maintenance falls distinctly into two categories. | 1.
Electronics Forum | Thu Jun 17 09:50:27 EDT 1999 | Brian Wycoff
| | WOULD LIKE TO DO RELOW OF 2 SIDED SMT BOARDS. USUALLY THE BOTTOM SIDE HAS RESISTORS AND CAPS ONLY. WHEN THE BOTTOM OF THE BOARD HEATS UP, THE PARTS ARE FREE TO MOVE AND ONLY SURFACE TENSION WILL KEEP THE COMPONENT FROM FALLING OFF. | | CAN BOARDS
Electronics Forum | Mon Jun 07 09:28:56 EDT 1999 | John Martell
Thanks a lot,, so assuming we are using standard parts, with nothing out of the ordinary we could safely assume that a machine capable of 20 mil would be more than able to meet our needs down the road. | We are changing from through-hole to SMT, won
Electronics Forum | Tue Oct 13 17:18:17 EDT 1998 | Chris Lampron
| | I'm still looking at equipment to start an SMT line. It's a jungle out there!!!!! | | Does anyone know of/have experience with Contact Systems Inc.. Specifically their 3SX or 3AVX machines. They are not one of the biggies but have a substantial n
Electronics Forum | Tue Jun 16 09:15:56 EDT 1998 | Justin Medernach
| We are very concerned about microcracking in SMT P&P process. I want to know something about: | What is microcracking? | When did it occur? What are the causes? | How can avuid this phenomena? Toni, Micro cracks can be caused by a ton of conditions
Electronics Forum | Wed Jan 14 08:24:07 EST 1998 | Allison
Good luck in your conquest. I have been struggling with the same issues for some time now. I have made the following conclusions. First, it is nearly impossible to establish parameters in SMT to perform X-Bar and R charts. Electronics is not as cl
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