[SI-LIST] Re: ESD protection devices

  • From: "David Anthony" <x2y@xxxxxxx>
  • To: <nigel.hughes@xxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
  • Date: Tue, 14 Oct 2003 13:43:29 -0400

Hi Nigel,

The structure's inductance is a limiting factor. Leaded MLVs are fairly
inductive. Surface mount MLV's have significantly reduced the inductance.
X2Y just licensed Maida Development and they are combining the low
inductance X2Y structure with their MOV material to further reduce the
inductance. You get the added benefit of space reduction by combining two
devices into a single structure.

Best regards,
Tony Anthony




-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Nigel Hughes
Sent: Tuesday, October 14, 2003 4:30 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] ESD protection devices


Hello Forum,

I am trying to compare and evaluate ESD protection devices.  According to
the device physics, what are the things that limit the speed at which a
zener or varistor responds?  I have heard previously that a varistor
responds quicker but read that the device itself is damaged when an ESD
event passes through it.  However others say that with the new multi-layer
structure of surface mount devices, the damage is negligible (if occurring
at all).  Has anybody got a better perspective of what the truth actually
is.  A bit of background supporting information would be helpful.

Thanks,
Nigel.

=======================================================================
O O O Nigel Hughes                      Tel +44 1763 266266
O O O Terminals                 Fax +44 1763 261216
O O O TTPCom Ltd.
          Melbourn Science Park, Cambridge Rd., Melbourn, Royston, Herts
SG8 6HQ UK
          nigel.hughes@xxxxxxxxxx
=======================================================================


------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:
                //www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu



------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:     
                //www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages 
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu
  

Other related posts: