Scott
  I agree 100% with your recommendations, although I think 80X might be one
too high.  I remember asking not too long ago for a price.  It is in the
$40k range for a decent scope.
Carey


-----Original Message-----
From: Severson, Scott M. <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Tuesday, October 26, 1999 3:44 PM
Subject: Re: [TN] Microscope for PWB and PWBA inspection


>Ken,
>
>Check out compound metallurgical microscopes by Zeis, Olympus, or Nikon
>(there are other good ones out there to).  IPC says that microsection
>inspection needs to be completed at 100x magnification with a 200x used for
>referee.
>
>If I where to by a single scope it would be an upright style (rather than
>the inverted)and would have room for 4 or 5 lens (5x, 10x, 20x, 50x, 80x)
>with 10x eyepieces.  Spend the money on good optics!  Also be sure to get a
>video capture system with it.  If I could have two metallurgical style
>scopes one of them would definitely be an inverted style (much more handy
>for viewing microsections but not as versatile as the upright).
>
>IMHO (in my humble opinion) you also need to buy a good quality "stereo
>zoom" microscope capable of about 5 - 40x magnifications.  Again spend the
>money on good optics.  You'll need this for PWBA inspection.  The
>metallurgicals don't have the "depth of field" and the magnifications are
>two high for comfortable assembly inspection.
>
>I won't even guess at the prices since it has been a long time since I have
>purchased one.
>
>Scott M. Severson
>Benchmark Electronics Inc - Winona
>
>-----Original Message-----
>From: Ken Patel [mailto:[log in to unmask]]
>Sent: Tuesday, October 26, 1999 4:13 PM
>To: [log in to unmask]
>Subject: [TN] Microscope for PWB and PWBA inspection
>
>
>Interested in buying a microscope for fab cross-section inspection
>application if I can convince my boss that it's not that expensive. I would
>like to know the relative price range and kind of magnification I should
>have it. Can I use the same one for PWBA inspection?
>
>re,
>ken patel
>______________________________________________________
>Ken Patel                       Phone:  (408) 490-6804
>1708 McCarthy Blvd.             Fax:    (408) 490-6859
>Milpitas, CA 95035              Beeper: (888) 769-1808
>
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