Good morning, greetings.
A supplier sends us a fully sealed module that complies with the Faraday cage effect, but ships it in an ESD-shielded bag.
Question:
Is there any impact or difference between shipping fully sealed products with or without an ESD bag?
The reason for this question is because they want to eliminate this ESD-shielded packaging for products classified as Faraday cage-compliant.
Antonio,
Yes, there is a difference between a fully sealed product in an ESD shielded bag or not. In order to adequately protest the product, it should be in a ESD shielded bag that has been tested to ANSI/ESD STM11.31 and be less than 20nJ per ANSI/ESD S20.20. I’m not sure what you mean by “Faraday Cage Compliant”. If you have a standard a supplier references for this, please let us know. Thanks
Greetings, Mr. Andy
I think the information I presented was a bit confusing.
First, the ESD-sensitive component is already sealed on all sides with metal caps, creating the Faraday cage effect.
Second, this finished product is placed inside an ANSI/ESD STM11.31-certified ESD-protective bag.
Question: Is an ESD-protective bag required for a finished product or for a module that already creates the Faraday cage effect?
Antonio,
I think it would depend on how good the metal caps are in protecting your ESDS item. If it was tested to IEC61000-4-2 then I would agree that you wouldn’t need an ESD shielded bag as the ESDS item is already protected by the metal caps. If not, you would want to do some kind of testing to confirm if the metal caps work. Depending on the cost of testing, it may be less expensive and easier to continue using the ESD shielded bag. Thanks