Electronics Forum | Wed Aug 25 09:48:28 EDT 1999 | Larry Koens
| | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | Any help would be appreciated. Thanks. | | | | | Most common reason is uneven heating where one side
Electronics Forum | Tue Apr 27 13:33:29 EDT 1999 | JohnW
| Has anybody had experience wavesoldering 1 watt 2512 resistor packages?? I know it can be done, but are there reliability issues? | | We are in the middle of a new product and the question was posed to me "Can we use 2512 1 watt resistors on the
Electronics Forum | Tue Feb 16 16:28:30 EST 1999 | Tuffty
| | Can anyone help me with the pros and cons of trying to wave | | solder tantalum and large (1812) ceramic capacitors. I do | | know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what
Electronics Forum | Thu Oct 01 13:31:09 EDT 1998 | FRANK
Assuming that you do not have a solderability problem with the board or part it sounds like you are not pumping the solder up high enough to contact the board plus push into the board by about 1.8mm. Are you using a chip wave in front of the normal
Electronics Forum | Wed Jun 03 10:25:49 EDT 1998 | Justin Medernach
| Can anyone tell me if there is a reference for smt component height specs on the bottom side of a board, which will also go through wave soldering. A current design I am reviewing has tant caps(7343) and a crystal on the back side. Should I only b
Electronics Forum | Wed Jul 03 15:58:16 EDT 2002 | davef
Your thinking is correct. Wave soldering pads that were designed for reflow can create problems: * Large pads used for reflow [too much solder] can create reliability problems. * Bridging [too much solder] creates rework. * Skipping & shadowing from
Electronics Forum | Mon May 23 10:09:45 EDT 2005 | Rob
Hi Lupo, The MVT Supras we had far out performed the Omron systems on fault detection & false calls, and were nearly 1/3 of the price. But it depends also on what operator skill & dilligence you have to make sure the data goes in accurately & is tr
Electronics Forum | Mon Nov 07 07:50:41 EST 2005 | pjc
6 deg is std angle. Some machines have option to adjust angle from 5 to 7. Maybe yours does. If you have an Electrovert wave machine you can get the Omega option. This option vibrates the wave to reduce surface tension. It does a nice job on rectangu
Electronics Forum | Mon Jul 17 17:37:10 EDT 2006 | russ
Okay, now we can get rolling here. Here is a couple of things about selective wave that Ihave found very helpful 1. Make sure that no parts on back side are in excess of .15". if they are we skip; out in SMT and handsolder if labor costs justify.
Electronics Forum | Wed Nov 15 15:51:21 EST 2006 | RJ K.
I have been looking into buying a rework station like ERSA or PDR. What I am questioning is how well will these systems reflow BGA's with metal top/cover that are reflective. In addition, when preheating the board would dark body packages absorb te
