1. Home
  2. Electronic Components
  3. Looking inside/through components with x-ray or near-UV?

Looking inside/through components with x-ray or near-UV?

Hi,

I need a source of above-UV or near x-rays that must be able to look through the black plastic of electronic components. the object is checking wafer visually, no high resolution is needed, we only want to know the position of the wafer (GaAS 0.2*0.2 mm) in the device. It is a precise Hall sensor. It will be used to check many devices.

We don't care if we just have to shine on it on a fotographic filem or whatever. But we would like to stay as low in the frequency range as possible, so prefer a little-above-UV to x-rays.

My question, maybe somebody of you already has experience on this area: What would be needed to look trhough the plastic of electronic devices? What generators could be used? Maybe some kind of near x-ray microscope? What is there at a reasonable price? Any comment is welcome.

Regards, Pieter Hoeben email: snipped-for-privacy@hoeben.com (remove REMOVETHIS)

Reply to
Me
Loading thread data ...

Me wrote in news: snipped-for-privacy@4ax.com:

Go to the dentists office and have him x-ray the IC.

Reply to
newtype

Why not calibrate the sensor to a known magnet at varying locations? I'm assumingyou need to know the location of it so you can calibrate it, but characterizing it maagnetically gets you the same result, if not a better calibration, doesn't it?

My brain is envisioning a well-characterized magnet in an XYZ translation stage generating many readings, but you may not want to get that carried away. 8*)

Reply to
William P. N. Smith

Use acoustic micro imaging. It will also show up any voids in your encapsulant. Check out this web site for a provider.

formatting link

To go to the samples page, try:

formatting link

You can also buy your own machine. You will have to justify the expense with large quantities of product though.

Al

Reply to
Al

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.