• Desco
  • EMIT
  • ESD Systems.com
  • Menda Pump
  • Menda-ID
  • Protektive Pak
  • SCS
  • Smart Clock
  • Special Team
  • Statguard Flooring

Your ESD Flooring Solutions Provider
000 Checkout

Added to your cart

You do not have any items in your shopping cart at this time.
View All cart items

  Shop from our other Desco
  Industries websites:

Desco Europe

Asia

Questions And Answers

# List All Questions Search List by Category
Question Recently our purchasing has given me some shielding bag for qualification as a alternate source. How can I qualify this shielding bag? What are the criteria to look for? I can measure the resistivity of the bags, but how can I measure the decay time. I have a charge plate analyzer and megohmeter. Please advise.
Answer The ANSI/ESD-S20.20-1999 lists recommended resistance ranges for conductive (< 1x10^4 ohms) and dissipative (>= 1x10^4 to < 1x10^11 ohms) packaging as well as shielding packaging to have the energy from a 1,000 volt (100 pF) discharge shall be less than 50 micro joules +/- 6 micro joules. Refer to standard ESD S11.31 Shielding Materials – Bags for the energy constraints and EOS/ESD S11.11 and ESD DS11.12 for resistance constraints and ESD ADV 11.2 for the Low Charging [yet to be defined] constraints. Static Decay tests can be performed using MIL-PRF-81705D; FTMS 101C, M4046.1 standards.
Related Categories:
 
If you have found this Q/A useful, please rate it based on its helpfulness.
Rating Rating Rating Rating Rating
This question has been rated: 0%0%
(0% at 0 Ratings)