Electronics Forum | Wed Jul 24 17:25:01 EDT 2019 | davef
Your solder stencil design should follow all basic rules for solder stencil design are followed in accordance with IPC-7525 including adherence to an area ratio of 2:3 or greater and an aspect ratio of 1.5 or greater.
Electronics Forum | Fri Aug 28 10:07:27 EDT 2020 | kylehunter
> After 2-3 cycles error disappear. Then you do not have an issue. That is the way the printer is supposed to work.
Electronics Forum | Mon Jun 21 01:32:20 EDT 2021 | yaxindatech
We can reproduce a prototype for you, if the defect can not be repaired. We are a PCB manufacturer in shenzhen China. It can be manufactured as a sample order in 2-3 working days.
Electronics Forum | Thu Jan 09 15:06:45 EST 2020 | emeto
From what I have seen it will be based on thickness, material and usage. Sometimes will be product dependent if the you have a marginal process. We used to change stencils every 2-3weeks for a high runner. Other than that follow Sr.Tech's advice.
Electronics Forum | Fri Mar 13 18:37:16 EDT 2020 | sarason
This error is an error from an Access database table. SO could be a damaged database file, a locked file associated with administration priviledges, or maybe the file server isn't running or there has been a change of file server ID etc. sarason
Electronics Forum | Fri Oct 16 19:33:26 EDT 2020 | emeto
Are you running Windows 7? If so, call them as there was some fix for Win7 on error like this.
Electronics Forum | Tue Apr 06 12:13:46 EDT 2021 | luca
Hello, does anyone know if there is an IPC standard for carbon ink? we use for keypads instead ENIG, we found batchs of PCB with 2-3ohm, 20ohm, until 300ohm( resistance of contact surface) by the same PCB supplier!
Electronics Forum | Tue Feb 22 02:51:25 EST 2022 | davef
The industry standard for Resistivity of Solvent Extract (ROSE) Testing analysis is IPC-TM-650 Method 2.3.25 – Detection and Measurement of Ionizable Surface Contaminants by Resistivity of Solvent Extract (ROSE).
Electronics Forum | Tue Apr 23 15:35:45 EDT 2013 | dyoungquist
Check out IPC-A-600. Revision G (July 2004) section 3.2.3 (surface) and section 3.2.4 (internal) give min/max thicknesses for various weight copper. The min also changes depending on what class (1-3) standard you are working to.
Electronics Forum | Mon Oct 15 12:42:36 EDT 2001 | davef
I hate getting "roped" into math stuff, but here I go again ... Area of aperture = volume of paste / stencil thickness = {[5000 mil^3] / 5 mil} = 1000 mil^2 Side of the square aperture = Sqrt of the area = [1000 mil^2]^1/2 = 32 mil Diameter of ape
