Bags protect from static and moisture

A Static Control Components (Europe) product story

Edited by the Electronicstalk editorial team Nov 2, 2001

Static Control Components (Europe) offers a complete system for packaging and protecting sensitive electronic components, and assemblies, from both static electricity and moisture.

Static Control Components (Europe) offers a complete system for packaging and protecting sensitive electronic components, and assemblies, from both static electricity and moisture.

The range includes moisture barrier bags, desiccants, humidity indicators, warning labels and vacuum sealers to enable users to meet the requirements of the joint IPC/JEDEC Standard J-STD-033 that standardises methods for packing, shipping and handling moisture sensitive surface-mount devices.

As an example, companies that tape and reel components for automated assembly must pack reels and trays in moisture barrier and static shield packaging to ensure that the product arrives at customers moisture-free, static-safe and ready for use.

Furthermore they should ensure that these bags are fresh and undamaged since rips or scratches could compromise the bags' Faraday cage shielding protection, so a supply of fresh bags is essential.

Moisture barrier bags not only provide dissipative, antistatic and shielding properties but also shield EMI/RFI and protect their contents from moisture, even during long-term storage.

Furthermore these bags are ideal for storing surface mount devices to prevent moisture absorption by the IC case material; during reflow soldering any absorbed moisture will expand and crack the case.

The Dri-Shield range of bags includes metallised multilayer and, for optimum moisture resistance, foil barrier.

They meet or exceed the moisture vapour transmission rates and EMI/RFI/static shielding requirements of MIL-B-81705C, type I and EIA 583, type I for static safe moisture barrier packaging.

For maximum dryness desiccant sachets should be added and humidity indicators cards should also be included to provide a visual signal of humidity level and to help to determine whether a component is dry enough for solder reflow.

The package can be completed with a suitable moisture-warning label and then sealed with a vacuum bag sealing unit, which is also available with a nitrogen purge option.