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'[OT] What is ESD and EOS'
1999\05\19@035101 by Benjamin Petersen

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I'll be damned, i know it.

But :

What is ESD and EOS.

What does it do.

Is it bad ?.... Sorry <G>, why is it bad ?

Where does it exist ?

How to prevent it ?

Is this a new knowledge ?

Why am I OT ?


Regards
Benjamin Petersen

1999\05\19@043239 by Stefan Sczekalla-Waldschmidt

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Benjamin Petersen wrote:
>
> I'll be damned, i know it.
>
> But :
>
> What is ESD and EOS.

ESD : Electro static discards

EOS ?

>
> What does it do.

Sit and wait.

>
> Is it bad ?.... Sorry <G>, why is it bad ?

It's bad.

It's bad because it used to make dirty little holes into the traces
etched
into the silicon by microchip or any other manufacturer ...

>
> Where does it exist ?

everywhere.

>
> How to prevent it ?

It hates ground, so you can force it to vanish by grounding everything.

>
> Is this a new knowledge ?

IMHO No.

>
> Why am I OT ?

Becaus you didn't told us about how it is related to your current PIC
Project.

>
> Regards
> Benjamin Petersen

Kind regards,

       Stefan Sczekalla-Waldschmidt
       spam_OUTsswTakeThisOuTspamoikossw.de

1999\05\19@074832 by Caisson

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> Van: Benjamin Petersen <.....benjaminKILLspamspam@spam@MARK-INFO.COM>
> Aan: PICLISTspamKILLspamMITVMA.MIT.EDU
> Onderwerp: [OT] What is ESD and EOS
> Datum: woensdag 19 mei 1999 9:47
>
> I'll be damned, i know it.
>
> But :
>
> What is ESD and EOS.

ESD is Electro Static Discharge.  A High-voltage, low power discharge
experienced mostly on dry days when when walking plastic materials.  The
"pok" you get when touching anything metal.   A sort of Micro-lightning.

EOS does ring a bell, but I can't tell you _what_ it is. :-(

> What does it do.

What does normal lightning do with tree's ?  It mostly destroys them.  If
you take a Micro-lightning on a miniature PCB (the inards of a IC or Chip)
it will wreak havok there.  Holes in conductive traces, maybe even melting
them away (and then you are LUCKY).

> Is it bad ?.... Sorry <G>, why is it bad ?

Yes.  The component ceases to function, or, if your not that lucky, it's
life-span decreases dramatically.  If you are _real_ unlucky it does not
die, but does not work well either.  I don't know if it's bad, but I surely
don't like it :-)

> Where does it exist ?

Everywhere where a static charge can develop.  A dry-air environment with
non-conductive floor-coverings.  That means anywhere where there are no
means to keep the charge between the human and the electronics he's
handling equal.  (so no egalisation charges can occur.)

> How to prevent it ?

Simple by not allowing a charge to develop (taking a somewhat conductive
floor covering for example) or by discharging yourself to a level equal to
the electronics you are using.  That's why people working with ESD
sensitive materials have wrist-bands connected to a Earth-terminal (a 1
MOhm resistor in series !) and a conductive plate, also connected to a
Earth-terminal (again a 1 MOhm resistor), to work on.   Their tools
(soldering iron, Scope, etc.) are allso connected to the Earth-terminal.

> Is this a new knowledge ?

Yes.  It's knowledge exist a merely 20 to 30 years.  Before that whe had
Radio-tubes that did have no problem with ESD :-)

> Why am I OT ?

That's because you forgot to tell us that you where looking at a PIC (not
that that mattered, but you had to look _somewhere_ ) when you had the
tought about ESD and EOS :-)

> Regards
> Benjamin Petersen

Greetz,
 Rudy Wieser

1999\05\19@081120 by mdelong

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"EOS" = electrical over-stress....could be either voltage or current.

Caisson wrote:

{Quote hidden}

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