TECHNET Archives

June 2004

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
"Dehoyos, Ramon" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 8 Jun 2004 10:44:28 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (84 lines)
        Mike:
        When you say non contact static fields, do you mean magnetic flux? or the force extended through space due to a magnetic force caused by current through an inductor or transformer?
        Regards
        Ramon

-----Original Message-----
From: Guy Ramsey [mailto:[log in to unmask]]
Sent: Tuesday, June 08, 2004 1:31 PM
To: [log in to unmask]
Subject: Re: [TN] TechNet Digest - 4 Jun 2004 to 6 Jun 2004 (#2004-149)


The discharge event causes the damage. There are a couple of models - human
body and machine - used to evaluate component "hardness". I am not aware of
any standards that attempt to predict damage in terms of field strength or
proximity to fields. I can't make sense of the question. I am trying to
imagine how big the field would have to be to kick enough electrons off a
component, passing through said field,  to damage the component. Where would
they go? When would the component be subject to damage?

Oouch - I think I hurt myself. Better get back to  . . . I forgot what I was
doing.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Kathy Kuhlow
> Sent: Tuesday, June 08, 2004 8:53 AM
> To: [log in to unmask]
> Subject: Re: [TN] TechNet Digest - 4 Jun 2004 to 6 Jun 2004
> (#2004-149)
>
> I am sure someone here will come through with a standard but
> couldn't you take a field meter and make up your own
> evaluation?  That way both of you would be able to see and
> evaluate the results.
>
> Kat
>
>
> >>> [log in to unmask] 06/07/04 06:04PM >>>
> TechNeters
>
> I am looking for collaborative feedback on an in house vexing issue.
>
> I am in discussions with our in-house ESD gooroo about the
> sensitivity of standard reeled smd capacitors and resistors
> in relation to static fields (rather than ESD damage caused
> by direct or in circuit contact).
>
> I store these devices in much the same way we receive them
> (under the supposition that the manufacturer should be an
> ideal source of knowledge on the way the product they make
> should be stored).
>
> Can anyone point me to a source of information that
> demonstrates if and how reeled devices, still on the reel,
> are affected by ESD fields and should they be stored/moved in
> shielded bags. (I have a paper from Kemet but it seems to
> relate to contact ESD damage research.)
>
> Mike Hughes
> Purchasing Manager
> CEA Technologies
> Canberra, Australia

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------

ATOM RSS1 RSS2