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March 1998

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Subject:
From:
Paul Klasek <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 31 Mar 1998 11:47:50 +1000
Content-Type:
text/plain
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text/plain (144 lines)
Peter ,
could you stress the difference between conductive/grounded and
dissipative ;
conductive regime being great in explosive manufacturing factories can
be deadly in electronics , especially the power segments of assembly and
test .
Too often I've seen really and truly personnel grounded without
slightest idea of principles and danger involved .

Thanks                     paul

>----------
>From:  Peter Mariani[SMTP:[log in to unmask]]
>Sent:  Tuesday, 31 March 1998 10:23
>To:    [log in to unmask]
>Subject:       Re: [TN] ESD
>
>I agree with  Mr. Hamilton but it not always pratical to make everything
>conductive due to availability, cost or design requirements. PCB boards and
>laminate for example are by design not conductive in many areas or in most
>stages of manufacture. Grounding does not work unless the grounded item is
>conductive.
>
>Ionization is a pratical cost effective tool  to add to to the ESD tool box
>along with training of the operators.  To learn more about ESD and
>ionization visit http://www.electrostatics.com.
>
>
>
>At 04:58 PM 30-03-98 -0700, you wrote:
>>Fred,
>>
>>I am not clear from your message and I don't think the importance was
>>made strong enough in the answers I have seen so far.
>>
>>EVERYTHING MUST BE GROUNDED / CONDUCTIVE!! One loose cannon so to speak
>>can do all the harm. The tube, person, bag, table top, pop rivet gun,
>>rivet supply container, ......you get the picture, all of it must be
>>addressed for ESD. And don't forget the air. Then, after mounting, don't
>>forget the device is now part of a PWBA. How is the PWBA handled????
>>etc., etc., etc.
>>
>>And speaking from experience, it is such fun to go after, because it can
>>be so elusive. You can also get REALLY carried away in the protection
>>arena. However, the product may need it, and eventually you may be able
>>to back off the ESD activities once you better define each areas'
>>vulnerability.
>>
>>It may be worth it to get a specialist in to help you out.
>>
>>Best of luck to you, and I hope I have helped more than I have scared
>>you!
>>
>>Richard Hamilton
>>Clemar Mfg. / Rain Bird
>>[log in to unmask]
>>
>>> -----Original Message-----
>>> From: Fred Pescitelli [SMTP:[log in to unmask]]
>>> Sent: Monday, March 30, 1998 2:06 PM
>>> To:   [log in to unmask]
>>> Subject:      [TN] ESD
>>>
>>> All,
>>> We are having ESD problems with a particular FET, and are trying to
>>> track
>>> the problem down in our process. What is the proper procedure for
>>> transferring parts from a tube to an ESD bag? We are also using blind
>>> rivets to hold them down to a heatsink, can we be causing a problem
>>> there?
>>>
>>> Fred Pescitelli
>>> Phoenix Designs
>>> 1285 Turner Rd.
>>> Lilburn, GA 30047
>>>
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>>
>
>
>Peter Mariani
>
>Ph. 215-513-0850
>Fx. 215-513-0855
>mailto:[log in to unmask]
>
>Visit http://www.electrostatics.com
>to learn more about static electricity
>
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