Electronics Forum | Thu Jun 18 13:56:39 EDT 1998 | No Friend Of Alpha
So my salesman says to me that we could return our unneeded Al frames from our MPM printer to Alphametals in CA for credit to be applied toward a future sale. Sonded good. So I boxed up all the damn frames (44) and shipped them off to Goofyland. Now
Electronics Forum | Thu Aug 13 21:58:14 EDT 1998 | Alpha Guy
When things go wrong (see below) it can usually be attributed to a communication problem. This is exactly the issue with this case. A meeting has been held and corrections have been made with no hard feelings. However, another call rather than a
Electronics Forum | Wed Jul 01 03:05:56 EDT 1998 | Jon Gruett
| WHAT SHOULD THE RATIO BE OF STENCIL APERATURE TO PAD TO GET GOOD QUALITY RESULTS. BY THAT I MEAN, A MINIMM OF SOLDER BALLS, AND LITTLE TO NO BRIDGING, SHORTS, ETC.. | RIGHT NOW WE ARE USING A 1:1 RATIO, BUT ARE INVESTIGATING REDUCING THE APERATU
Electronics Forum | Wed Jun 17 16:19:10 EDT 1998 | Ryan Jennens
| We are facing a problem of high contamination on boards after wave soldering. We want the contamination to be under 24 ugm/inch square. We are using a no clean flux with the spray fluxer unit of wave soldering. The contamination is higher on the e
Electronics Forum | Wed Jun 10 09:27:36 EDT 1998 | Steve Gregory
| We're running into problems with board damage (broken traces, solder shorts) due to pliers and other bizarre tools being used for depanelization. I need some sort of fixture for this. A delrin plate with a slot cut to the correct depth and width mi
Electronics Forum | Fri Jun 05 15:06:26 EDT 1998 | Dave F
| I have just been assigned to look into the ionic chromotograhy test on our PCBA but I have zero knowledge. Could anyone help to explain what is this test about? Is it | a) a destructive test? | b) What is the measurement unit of this test? | c) Wh
Electronics Forum | Fri Jun 05 10:24:56 EDT 1998 | Earl Moon
| I have just been assigned to look into the ionic chromotograhy test on our PCBA but I have zero knowledge. Could anyone help to explain what is this test about? Is it | a) a destructive test? | b) What is the measurement unit of this test? | c) Wh
Electronics Forum | Thu Jun 04 14:47:56 EDT 1998 | Steve Gregory
Hi Tim! There are two belt feeders that I've worked with that I can comment on. You're right about vibe feeders, they're good for one thing as far as I'm concerned...they make okay boat anchors, not good, just okay....(GRIN) The two that I'v
Electronics Forum | Thu Jun 04 20:52:57 EDT 1998 | D.Lange
| | I have gold fingers that I want to mask when running over the wave without pallets. They're on the leading edge of the board. I recall seeing rubber boots that slid onto the fingers to mask them. Pop 'em on before the wave; pop' em off after a
Electronics Forum | Tue Jun 02 14:32:58 EDT 1998 | Chris Fontaine
We have experienced poor adhesion of acrylic conformal coating to plastic bodied IC�s. The observed symptoms of this are a blistering or lifting of the coating at the surface of the component, although peel testing has revealed that this is not alwa
