Electronics Forum | Mon Jun 07 22:30:28 EDT 1999 | Dave F
| | | I was wondering what measurements are used to define pitch? | | | | | Frank: John's correct with the most common definition, but there can be others, depending on your perspective. TTYL Dave F | | | | Pitch. The center-to-center spacing b
Electronics Forum | Wed Mar 20 20:02:06 EST 2002 | davef
Surfactant. A synthetic detergent made from petrochemicals that lowers the surface tension of water and allows better cleaning in small spaces. Do you have a cleaning issue that requires you to use a surfactant? If so, be aware that you must clean
Electronics Forum | Tue Sep 06 12:39:06 EDT 2011 | deanm
According to IPC-7351A, the optimum fiducial is a solid circle with a minimum of 1mm diameter, but can be up to 3mm. There should be a solder mask clearance a minimum of 2x the radius of the copper circle. So the minimum fiducial size is 0.040" with
Electronics Forum | Fri Sep 01 05:29:01 EDT 2017 | mona0312
Hi, Recently, i found a company called "jlcpcb". It’s very cheap 10pcs boards. 1.2mm thick, 1-OZ copper, 6/6-mil outer (0.1525mm) just cost $2 Cheap price and lots of options regarding board thickness, colour, etc. None of my boards have ever had a
Electronics Forum | Mon Oct 29 05:14:18 EDT 2018 | vipcircuit
This is Joe from Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon,Taconic,Aluminum base;
Electronics Forum | Mon Oct 29 11:44:46 EDT 2018 | vipcircuit
Dear Andrew: Nice day! This is Joe from Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon
Electronics Forum | Fri Sep 07 11:46:29 EDT 2018 | dleeper
Air gap on the PCB is determined the pad spacing which in turn is governed by the component. As long as the PCB designer is following the typical BGA layout best practices; i.e no open via in pad, non-solder mask defined pads, solder mask covered tra
Electronics Forum | Wed Oct 24 06:10:58 EDT 2018 | vipcircuit
Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon,Taconic,Aluminum base; 3. Special techn
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
Electronics Forum | Fri May 21 12:24:21 EDT 1999 | KA Stillings
I normally handle the soldering issues for this facility but a question was asked of me -- What the H@## is this stuff and what is causing it? Was wondering of I could get some input from any Guru on plating issues. Need info ASAP!!!!!!!!!!!!!!!!!!!
