View Single Post
  #7   Report Post  
Posted to sci.electronics.repair
Sam Goldwasser Sam Goldwasser is offline
external usenet poster
 
Posts: 118
Default CMOS DRAM chips and static

Eeyore writes:

gareth magennis wrote:

"orange" wrote in message

Is it safe to keep the CMOS chips (RAM) in plastic box?
if not, can it be modified to be safe somehow, I just don't have any
alternative..


Wrap some aluminium foil around a small piece of expanded polystyrene, then
you can just push the chips into the sandwich and keep the lot in a plastic
box. The foil shorts all the pins together so there can be no potential
difference between any.


Aluminium foil is a BAD idea. In the event that there is any appreciable charge
on a given pin, pushing it into aluminium foil will discharge it *quickly* and


And how would this occur?

the resulting current may kill it.

Always use high resistance material for storing ICs like the anyi-static black
foam material. This allows any charge to 'leak' away slowly and safely.


Aluminum foil is fine. The black stuff has a relatively low resistance
anyhow. Check it with an ohmmeter.

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.