Electronics Forum | Thu Sep 27 19:52:28 EDT 2001 | davef
All of the discussion of "environmental controls" are a matter of degree, dependent on the requirements of the product that you manufacture. For example: shops assembling under-the-hood products have different requirements than shops making garage d
Electronics Forum | Fri Dec 14 13:58:07 EST 2001 | slthomas
This is one I haven't seen before (not in this context, anyway). We have an assembly that we have the SMT done out of house on, because of the high volumes. The boards have two distinct characteristics with respect to the appearance of the solder jo
Electronics Forum | Tue Jan 15 17:06:04 EST 2002 | pjc
The Mydata machine's Y-axis moving does not affect parts already placed on the board. The machine has very sophisticated acceleration and deceleration to account for this. There are many users of Mydata machines running 0.3mm pitch and large heavy pa
Electronics Forum | Wed Feb 20 13:23:33 EST 2002 | dgeorge
I have some interesting problems on my hands that some of you may know the answers to. I am currently wave soldering a through hole connector to a rigidized flexible circuit. This is a compliant pin connector that is supposed to be pressed into a h
Electronics Forum | Wed Mar 06 17:15:06 EST 2002 | djarvis
Hmmmm, very good point. I never thought about it much as such dedicated tools were not available when I first kicked off. I'd look at the reflow under a microscope and if I could identify any problems, I'd start to look at the print using the same
Electronics Forum | Wed Mar 27 07:41:54 EST 2002 | paul_stamper
As Mitchell stated before, the cleaning of the stencil is rather important. When considering stenciling of adhesive you must review your stencil cleaning process. The recomended process is a ultrasonic cleaner with a heater option. These systems are
Electronics Forum | Fri May 03 18:10:17 EDT 2002 | stownsend
Okay, here goes another thread about gold plating. I have been using gold plated PCB's for about two years now, with mostly very good results. The main reason I started using gold in the first place was because it is flat, solder wets to it nicely,
Electronics Forum | Thu Jun 13 11:27:25 EDT 2002 | davef
>*Changing paste >EricD: Yes we are considering that as a point. Because I believe the paste we are using are in syringe packaged and designed for dispensing. We are using an Indium SMQ75 paste and current application naturally is stencil printing.
Electronics Forum | Tue Jul 16 21:53:51 EDT 2002 | davef
We don't use Sn43Pb43Bi14 solder. We don't make high performance circuit boards that are subjected to temperatures from -55� Celsius to +85� Celsius and vibration requirments at 6g. We don't like bismuth solder alloys, because: * Fatigue life is r
Electronics Forum | Wed Jul 24 23:36:44 EDT 2002 | ppcbs
I'm with you Patrick. I make it a point to not buy anything made in China. Not just because it isn't made in America, but it usually breaks as soon as you get it out of the box. There should be a law against selling some of this stuff, just becaus