Electronics Forum: measured (Page 1 of 264)

moisture in pcb's how is it measured

Electronics Forum | Tue Oct 19 19:15:23 EDT 1999 | stephenmac

I would like to know how to measure the moisture in pcb's. I have experienced blowholes and am sure it is the board manufacturer. What is the limit and is there any way to correct the problem when moisture rich boards are already in your process. Th

Re: moisture in pcb's how is it measured

Electronics Forum | Wed Oct 20 10:49:04 EDT 1999 | Brian

Hi! Stu's method is a half-truth. What it measures is the aggregate of all volatile material with a significant vapour pressure at the baking temperature, not just H2O. Short of very complex methods, it could be complemented by a comparitive measur

Re: moisture in pcb's how is it measured

Electronics Forum | Tue Oct 19 22:43:31 EDT 1999 | Stu Leech

We are deeply involved with this question because we have developed a much faster way to remove moisture from PCB's. PCB's absorb varying amounts of moisture at differing rates. The rate is influenced by the laminate type board configuration , loca

I mounted the parts on the buck-boost DCDC converter and measured the characteristics

Electronics Forum | Tue Aug 23 03:29:37 EDT 2022 | samhe

I received a buck-boost DCDC board with an optical sensor from NextPCB, so I mounted the components and measured the efficiency. Table of contents Board received from NextPCB Solder paste printing Mounting of parts Reflow operation check Attaching

Re: CPk

Electronics Forum | Wed Dec 08 08:20:20 EST 1999 | Jerry Stafford

Michael, You need to know the measurement capability of whatever system you use to do your CpK measurement. Ideally you would do an error of measurement study of the measurement process. It is hard to imagine a measurement system that would err on

Solder Paste Inspection System.

Electronics Forum | Sat Mar 09 07:09:44 EST 2002 | davef

Interesting findings. I agree that probably no one does �100% volume measurement and subgrouped Xbar and S charts�. Who would want to spend the money? Isn�t the issue making things, rather than measuring things? The microscope is used to make m

Re: Solder Paste Measuring

Electronics Forum | Mon Apr 05 21:41:00 EDT 1999 | Russell Bartley

| I need help in finding solder paste measuring equipment. | As already mention in other replies the Cyberoptics and others are commonly used but the price and the measurement range must be considered since you can purchase paste measurement equipm

Saponifier Concentration Measurement

Electronics Forum | Wed Dec 05 07:29:48 EST 2001 | PeteC

Another measurement tool is a refractometer to measure light refraction. The saponifier will have a specific refraction property is measure agianst an index.

Factory Lighting - specs and measurement ?

Electronics Forum | Thu Jun 06 21:50:27 EDT 2002 | ianchan

Hi Mates, Here's another boggle question : does anyone know how to measure the work environment "Factory Lighting"? what is the measuring equipment to use? what is the specifications-range to measure factory Lighting? Thanks for your help.

3D Vision vs 2D vision

Electronics Forum | Thu Jul 19 09:56:52 EDT 2001 | Damian Holzmann

The obvious difference between 2D and 3D is that an accurate volumetric measurement can only be obtained with a 3D measuring system. Laser line measurement in 2D does not allow accurate volumetric measurement. If you modify the aperture in a stencil

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