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Nima Rezai
Guest
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 Posted:
Tue Mar 15, 2005 8:48 pm Post subject:
Need microscope for IC inspection |
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Dear readers,
I work as distributor of electronic components. To recognize used ICs (also
called "Pulls" or "Refurbs") I need a microscope, which enables me to better
see scratches on the surface, bent leads, tin traces, etc.
Do you have any recommendations about what kind of microscope is well suited
for this purpose and where to buy?
Best regards
Nima
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Uwe Bonnes
Guest
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| Posted:
Tue Mar 15, 2005 8:48 pm Post subject:
Re: Need microscope for IC inspection |
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Nima Rezai <Nima@ngi.de> wrote:
| Quote: | Dear readers,
I work as distributor of electronic components. To recognize used ICs (also
called "Pulls" or "Refurbs") I need a microscope, which enables me to better
see scratches on the surface, bent leads, tin traces, etc.
Do you have any recommendations about what kind of microscope is well suited
for this purpose and where to buy?
|
It depends on what you want to spend...
Things to look for are:
- Working distance
- Brightness
- Clearness
- When switching magnification, does the focus keep the same
....
Judging from your domain, you might live near Nuernberg. At the SMT
Nuernberg (Apri 19-21) you will probably have a chance to through a lot of
different types and get a feeling for the prices and the pro and cons of the
different types.
Bye
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ---------- |
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CWatters
Guest
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| Posted:
Tue Mar 15, 2005 9:42 pm Post subject:
Re: Need microscope for IC inspection |
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"Uwe Bonnes" <bon@elektron.ikp.physik.tu-darmstadt.de> wrote in message
news:d16tl5$5a3$1@lnx107.hrz.tu-darmstadt.de...
| Quote: | Nima Rezai <Nima@ngi.de> wrote:
Dear readers,
I work as distributor of electronic components. To recognize used ICs
(also
called "Pulls" or "Refurbs") I need a microscope, which enables me to
better
see scratches on the surface, bent leads, tin traces, etc.
Do you have any recommendations about what kind of microscope is well
suited
for this purpose and where to buy?
|
Something like this works for packaged devices...
But perhaps not this particular model
http://www.safepub.com/Catalog/General/tvreader.htm#largest%20lens
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Zak
Guest
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| Posted:
Wed Mar 16, 2005 12:47 pm Post subject:
Re: Need microscope for IC inspection |
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Nima Rezai wrote:
| Quote: | Dear readers,
I work as distributor of electronic components. To recognize used ICs (also
called "Pulls" or "Refurbs") I need a microscope, which enables me to better
see scratches on the surface, bent leads, tin traces, etc.
|
I'd think a binocular microscope with dual objective is great. Lower
magnification, but a good 3D view. In biology these are used for
dissecting insects.
Celestron # 4040 Electric Illuminated Dissecting Stereo Binocular
Microscope is one I found.
Do get a real binocular that gives a 3D view, not one with a single
objective and a light splitter halfway the body.
I also notice a SZ30 by Olympus. More expensive, but a zoom and
including illumination. Made for manual IC bonding it seems.
Google for binocular microscope stereo zoom olympus.. I have no
experience with the zooms, but the binoculars were sure great in biology
to make other students squirm at the huge insects they'd see in 3D.
Thomas |
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mcesar
Guest
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| Posted:
Wed Mar 16, 2005 5:05 pm Post subject:
Re: Re: Need microscope for IC inspection |
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| Quote: | Do get a real binocular that gives a 3D view, not one with a single
objective and a light splitter halfway the body.
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I can only agree with this. Although we're using the binocular for
soldering I think it's a really good choice for IC inspection.
We're using two Nikon SMZ-645 microscopes (real stereo, zoom 8x~50x)
& we are really happy with them,
Hope this helps, greetings. |
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