Electronics Forum | Wed Aug 27 10:35:04 EDT 2008 | evtimov
Hi, also you can check the board design. If always the sme pins are not soldered, a via could be close to the pin and take part of the solder in. Regards, Emil
Electronics Forum | Mon Sep 08 05:23:11 EDT 2008 | milas
Hi We are designing a new pcb which contains sensitive analogue circuitry, where tiny leakage currents could dramatically affect product performance. Should I build this product Clean or a No-clean chemistry set ? Thanks in advance
Electronics Forum | Tue Sep 09 06:29:27 EDT 2008 | arzu
i'd like to have design information about how to produce membrane switches using the screenprinting process (making silver traces, buying /placing domes) Who knows where to find information? (we normally only produce the artwork)
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 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
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