Electronics Forum | Thu Sep 25 16:50:50 EDT 2008 | glennster
Ditto here, also. This is generally referred to as �cratering,� and is associated with stress on boards from operations such as ICT, installation of compliant pin connectors, and depanelization. It is more common on PCBs designed for Lead-free proc
Electronics Forum | Tue Sep 16 21:52:19 EDT 2008 | rayjr1491
10x16 by 5 mil stencil gives me a area ratio of .615 unless I am calculating incorrectly. I will try and attach some images tomorrow. By reducing the Y direction my area ratio s below .6 and I thought this was not advisable. Your help is muc appreci
Electronics Forum | Wed Sep 17 18:12:25 EDT 2008 | yam6rider
Ray, 10x16 should give you .62 area ratio, Theoretical Solder Volume=800. You should increase the width and the length to get better solder release.
Electronics Forum | Fri Oct 31 07:52:23 EDT 2008 | davef
For a better understanding of decoupling capacitors, look here: * http://en.wikipedia.org/wiki/Decoupling_capacitor * http://www.hottconsultants.com/techtips/decoupling.html * http://pcdandf.com/cms/content/view/3410/95/
Electronics Forum | Fri Nov 14 07:32:24 EST 2008 | davef
Yes, courtyard gives you the space requirement of a component. Sometimes, the working space of a rework tool takes precidence, though.
Electronics Forum | Tue Nov 25 12:33:57 EST 2008 | jdumont
We had the same issue with the INA121's a while back if im not mistaken... i believe the design was changed do to other reasons with that part and the prob went away.
Electronics Forum | Fri Nov 21 16:49:50 EST 2008 | stepheniii
You want to make it from scratch? Design the circuit, do the layout, and make the PCB, then populate it? You can't make the raw boards at home. What are you studing at uni?
Electronics Forum | Mon Nov 24 16:58:11 EST 2008 | dougt
If you don't want the headache of etching a board you can design online and order a board for a couple bucks. The place I used had free software......www.PCB123.com
Electronics Forum | Thu Dec 04 13:16:58 EST 2008 | grantp
Hi, Just checked with the manufacturer of that printer, and they cannot to the larger size. Shame, as it looked like a really good design. Anyone know of any other brands? Grant
Electronics Forum | Mon Dec 22 10:24:06 EST 2008 | ck_the_flip
Yes I agree with Emil that the Jig/Fixture design is crucial for alignment. The hot-bar machine I worked with came with a digital camera and monitor to aid with alignment. Other than that, the right profile (heat, pressure and dwell), and a good fl
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