Electronics Forum | Mon Oct 30 11:16:08 EDT 2023 | proceng1
Most of the long boards are some kind of LED lighting. From the 4ft tubes that go in drop ceiling fixtures to custom lighting fixtures.
Electronics Forum | Fri Sep 11 15:11:23 EDT 1998 | Dave Celestian
I am running composite fixtures on my wave solder machine and after about 500 passes each (1 month)they are showing serious signs of wear in that the composite surface is bubbling up and glass fibers are also starting to show. The problem here is t
Electronics Forum | Mon Sep 14 09:09:10 EDT 1998 | Earl Moon
| I am running composite fixtures on my wave solder machine and after about 500 passes each (1 month)they are showing serious signs of wear in that the composite surface is bubbling up and glass fibers are also starting to show. | The problem here
Electronics Forum | Fri May 08 08:12:32 EDT 1998 | Steve Gregory
| I am running a board that is .062" thick and has components that over hang the edge of the board by .090". I have bottom side smt components (chip caps and resistors only) and use the turbulent wave to help solder the components. The problem I am
Electronics Forum | Thu Feb 17 10:14:40 EST 2000 | Jim N
We bulid many boards with fine pitch on solder side and then wave. We use a wave fixture that is custom for each board. The fixture covers the SMT components and only exposes the PTH lead during the wave process. It requires about .070 to .100" clear
Electronics Forum | Fri Dec 17 09:24:46 EST 1999 | Marty Wetzel
KA, Joshua makes a good point. A wave solder fixture will allow you to process your double-sided boards without having to add the epoxy step. The one time fixed cost of a fixture is quickly offset by the time that you save by not gluing your SMT.
Electronics Forum | Wed Oct 27 17:59:54 EDT 1999 | John Thorup
How about some of the more rigid materials like the commercial fixture manufacturers use to machine solder/assembly fixtures from? Glastic, an anti-static version of Delmat and proprietary materials from MB manufacturing come to mind. Search the arc
Electronics Forum | Tue Dec 17 13:42:04 EST 2002 | robf
There are a few emerging technologies that have been growing in popularity for the past few years. Pin through paste, press fit connectors and selective soldering machines seem to be displacing custom fixtures. Most of the mixed technology boards o
Electronics Forum | Wed Sep 15 17:31:40 EDT 2004 | GS
Once you verified for correct profile ( consider CTE mismatch) make sure before you remove PBA from fixture, the temperature is almost at room temperature. If by removing PBA from fixture,and the PBA gets a little bent (warped) just in the area where
Electronics Forum | Tue Jan 03 15:16:53 EST 2006 | Cmiller
In circuit testing is expensive up front because of the fixture cost but the tests are fast. AOI programs can be develpoed in less than a day but take longer to run. If you have good test coverage, in circuit would be a better choice in my opinion-if
