Yep, was going to suggest the same thing:
http://www.buehler-met.de/fileadmin/user_upload/pdf/brochures/Petrothin_Deca
psulation.pdf
Steve
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bruce Tostevin
Sent: Friday, August 12, 2011 9:30 AM
To: [log in to unmask]
Subject: Re: [TN] FW: Metal can, transistor, delidding tool
Adding on to Steve's suggestions about drill presses and lathes, another
option is to grind the package paper thin on a rotating diamond disc
similar to those used for cross-sectioning. We do that here on our
Buehler and routinely open up clock oscillators, crystals, transistors,
etc., and every variety of plastic packages like relays and switches.
Use just a little water to keep the package cool enough to hand hold it
while you're grinding and turn off the water before you actually get all
the way through the lid. Very carefully, using a brand new X-Acto
blade, push the tip through the thinned metal, run it part way around
the lid and usually the lid will lift right off. Done carefully you
will introduce an absolute minimum of particulate matter inside the
device. Inexpensive diamond wheels are available on the internet.
Bruce
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Creswick
Sent: Friday, August 12, 2011 9:12 AM
To: [log in to unmask]
Subject: Re: [TN] FW: Metal can, transistor, delidding tool
Victor,
I did a quick search and could not find the manual tool which I was
looking for. I can clearly visualize it in my mind, but cannot remember
the manufacturer's name.
Basically, it consisted of two sealed bearings, having the spin axis
vertical. The outer races of the bearings were approximately 0.15"
apart [don't remember if the spacing was adjustable or not].
Coming in from the 'open' side of the bearing pair was a cutting disk,
much like the cutting wheel of a pipe cutter, etc. [Actually, the
cutting disk was flat on one side and came in at a very small angle on
the other] The cutting disk was attached to a threaded mechanism which
allowed it to be brought closer to, or farther away from the cylindrical
devices being opened.
To operate, one would back off the cutting disk, insert the TO package
[leads-up], such that the sealing flange rested on top of the outer
races of the bearings.
The cutting disk would then be brought in against the package lid, just
above the sealing flange [actually, just below the flange as it was
oriented in the machine], against the header platform.
When we opened TO's, it was not for the purpose of re-sealing.
Midas made/s can openers for bathtub packages and TO's, but they are
doing so with the intent to re-seal. Possibly they have a clue about
who makes the manuals for DPA....
You may also contact the author of various articles on delidding of
counterfeit devices for suggestions.
If you are not the least bit concerned about generating particulate
matter, you can chuck the cover in a drill press or lathe chuck and go
at it with a dremel tool and cutoff wheel. Ditto for small lathe and
cutoff tool, or file, etc.
If you find out who made/makes the old manual tools let me know.
One could make one, but the upfront engineering charges would likely
outweigh the purchase cost - if you could find who makes them....
http://www.process-sciences.com/pdfs/PSI_Counterfeits_Screening.pdf
http://www.midastechnology.com/Products_Midas_Technology.html
Steve Creswick
Sr Associate - Balanced Enterprise Solutions
http://www.linkedin.com/in/stevencreswick
616 834 1883
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Friday, August 12, 2011 7:51 AM
To: [log in to unmask]
Subject: [TN] FW: Metal can, transistor, delidding tool
Folks,
I have not received the correct response to my inquiry. Therefore,
I
will post again.
A "Can Opener Tool" for de-lidding metal transistor can, as done in past
years when metal cans were the norm.
Victor,
-----Original Message-----
From: Stadem, Richard D. [mailto:[log in to unmask]]
Sent: Wednesday, August 03, 2011 10:06 AM
To: TechNet E-Mail Forum; Hernandez, Victor G
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask];
[log in to unmask]; [log in to unmask]
Subject: RE: Metal can, transistor, delidding tool
This sounds like a question for some of the failure analysis experts who
may have a good understanding of de-packaging tools. I have copied them
specifically to get their inputs.
Can you folks in the CC field provide any input on sources for
de-packaging tools that Victor is looking for?
Thanks
Dean Stadem
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Wednesday, August 03, 2011 8:43 AM
To: [log in to unmask]
Subject: [TN] Metal can, transistor, delidding tool
Fellow TechNetters:
My colleague and I were recalling, flash back, tools for opening
metal
can components, transistors, etc. We currently have a need for one of
those specialized tools from years gone by. A tool for removing the
lid on
EPROMS was also very handy, nut cracker.
Can someone provide a make and model to purchase an electric cap opener
for delidding metal package transistors (like T-03 packages)? I used to
have a SigneMatic cap opener, but they appear to be no longer in
business. The unit had an adjustable/slide roller that feed the metal
can into a rotating beveled blade/cutting edge.
Appreciate any help on this.
Victor,
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