Rick: If you are setting up a facility use the ANSI/ESD S20.20 to set up
your program.  The bench set up should follow the HBM component sensitivity
classifications of ESD STM5.1-1998:

Class 0      <250V
Class 1A     250 to <500V
Class 1B     500 to <1000V
Class 1C     1000 to <2000V
Class 2      2000 to <4000V
Class 3A     4000 to <8000V
Class 3B     equal to or greater than 8000V.

All ESD susceptable items are to be handled at an ESD protective work
station, which includes a dissipative work surface.  A 2000 volt susceptible
item must be handled at a dissipative work surface in order to provide
protection from an ESD event taking place.

Alan Cash

-----Original Message-----
From: David Fish [mailto:[log in to unmask]]
Sent: Wednesday, September 20, 2000 8:47 AM
To: [log in to unmask]
Subject: Re: [TN] ESD Program


Rick: One approach for determining a cost-effective design of the features
of your ESD
work area(s) is to select the features based on the sensitivity
classification of the
devices in that work area.  Five classes of sensitivity are:
* Class 0 areas contain devices with ESD withstand voltages ranging from 0
to 199
volts.
* Class 1 areas contain devices with ESD withstand voltages ranging from 200
to 499
volts.
* Class 2 areas contain devices with ESD withstand voltages ranging from 500
to 1,999
volts.
* Class 3 areas contain devices with ESD withstand voltages ranging from
2000 volts and
up.
* Class 4 areas contain no devices that are sensitive to ESD damage

Printed circuit board assembly areas are classified according to the most
sensitive
component handled in that area.

An example of the benefits of this approach is:
* Class 2 work benches require dissipative work surfaces.
* Class 3 work benches don't require dissipative work surfaces.

Good luck.

Rich Lasko wrote:

> Good morning technetters:
>
> I am trying to put together a "ballpark" figure regarding the cost
> implementation and maintenance of a "good" ESD program.  By "good" I mean
> one that will satisfy most of the prevention requirements (and customer
> audits) without going "overboard" on ESD prevention and spending thousands
> of dollars on items that are "nice" to have but not really necessary.
>
> We have identified the following main items as needs for this program: ESD
> floor, ESD bins/boxes for components or product, wrist straps, foot
straps,
> ESD test kit, ESD mats, ESD packaging.
>
> This program would be implemented at a contract manufacturer's location
with
> approx. 47,000 square feet of manufacturing floor space.  From what I
> remember, it is typically the ESD floor protection (wax, tile, or carpet)
> that usually costs the most.
>
> Thoughts on cost?
>
> Thanks!
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
following text in
> the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
additional
> information.
> If you need assistance - contact Keach Sasamori at [log in to unmask] or
> 847-509-9700 ext.5315
> ##############################################################

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following
text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################