Electronics Forum | Tue Mar 13 14:25:14 EST 2001 | Mike Konrad
Hi Kerry, I do not wish to turn this subject in to a debate, but consider this� If every technical question posted resulted in a commercial reply (company name, model number, phone number, price, features and benefits, etc), then there would be lit
Electronics Forum | Wed Feb 28 03:57:46 EST 2001 | peterbarton
Are you using a water based flux? Are the solder balls mainly around or near non-plated holes or near the edges of the PCB? If so the preheat must be set so the water content of the flux is fully evaporated before the board hits the solder wave. If
Electronics Forum | Fri Mar 02 08:52:20 EST 2001 | markkrmp
Are your voids looking like blow holes also? Is this only occurring on the solder joints of the Thru Hole components and Via's? Or does this happen on SMD pads? My experience is that we have seen this but only with some of our older PCB's which are
Electronics Forum | Mon Mar 05 20:53:32 EST 2001 | davef
When you say all over the board, please give more detail. Where are they located? [All over wave soldered portion, laminate only, solder mask only, solder only, specific components only, etc] When you say white residue, what color are they really?
Electronics Forum | Thu Mar 22 17:03:59 EST 2001 | williamh
I have been using an MPAV and MVIIF for about 3 1/2 years and have had some difficulties, mainly with the MPAV. After only 2 1/2 years of use we had to replace the laser because we were having alot of QFP's being mismounted. That was an $8,000 expe
Electronics Forum | Thu Mar 08 22:17:01 EST 2001 | davef
So much for the experts you asked for, Dreamer. Your project is fairly common. As an expample, there was a thread in the past month or two on SMTnet, where someone was looking for suppliers of "adapters". You should focus on: * Placing the adap
Electronics Forum | Thu Mar 08 09:08:47 EST 2001 | jax
Your safest bet is to manually remove the trays. The problem with what you want is that the machine does not know that it missed a part. It simply goes to the point you specify and tries to pick somthing up; if it doesn't pick up anything it believes
Electronics Forum | Thu Mar 08 12:40:54 EST 2001 | Ralph Merk
We are currently using 0402 resistors and capacitors in our production process. Our equipment is as follows: - DEK 265 - Siemens S25/F5 - Vitronics XPM520(5 zones) - 2% silver solder Alpha WS678 The problem is that randomly some 0402 capacitors are
Electronics Forum | Mon Mar 12 10:13:43 EST 2001 | CAL
At APEX I was able to witness the BEAM WORKS Selective Laser Soldering machine operate.Truly impressive. When they told me they could solder a BGA component, I old them they were HIGH as a kite. The board they demonstrated had 4 BGA's on it. When the
Electronics Forum | Tue Mar 13 20:25:39 EST 2001 | davef
So, what is not soldering? Pads er test points? I assume the holes are unsupported, right? Tell us more about the test points. Are they the kind with the little pastic shoulders [on the primary side] that keep them from falling through the hole?
