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The guidelines are based on Gore’s best practices in eWEP (extended Water Entry Pressure) testing for GORE® Portable Electronic Vents. Please follow the guidelines to conduct the eWEP testing to minimize water leakage failures caused by test issues.

To ensure that our products deliver the performance and reliability that you expect, we conduct various tests and use key performance indicators during vent production.

GORE® Protective Vents vs. Common Venting Solutions

As the name says, Gore Protective Vents enable pressure equalization through venting with the key feature of ingress protection. Other venting technologies have limits to protecting against the ingress of dust and moisture.

GORE® Thermal Insulation has unique properties of low thickness (< 300 μm) with conductivity less than air (< 0.02 W/(m•K) ) and therefore presents challenges in characterization. A test methodology incorporating a modified heat flow method, ex-situ thickness method, and two thickness conductivity calculation is used to provide reliable and accurate thermal conductivity data. Conductivity results show the distribution of data falls below the conductivity specification of 0.02 W/(m•K).

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This document shows the Installation Instructions and Instructions for Use of GORE PolyVent Ex. In addition the relevant standards are listed and the attestation of conformity is described.

Rigorous testing shows how GORE® MEMS Protective Vents Style 200 reliably prevents particle contamination and pressure build-ups in MEMS microphones, and enables higher manufacturing yields and in-process acoustic testing in high-volume PCB (Printed Circuit Board) assembly operations.

A critical aspect of vent selection begins with defining the level of protection your application, device or housing requires.

IP ratings cannot be “converted” to NEMA ratings, since NEMA requires additional testing not included in IP. However, there are minimum NEMA ratings that will meet or exceed a given IP code.

Selecting the right acoustic vent for an electronic device requires a balance between the level of protection the vent supplies, and what the vent contributes to the overall sound performance of the acoustic system.

The challenge of designing electronic devices that stay protected from dust, liquids and pressure becomes increasingly difficult when acoustics are introduced.

The International Standard IEC 60529 defines specific tests used to verify that an enclosure meets the requirements for ingress protection against particulates and liquids. W. L. Gore & Associates has developed additional protocols to test for IPx4 compliance that address these issues and mirror real-world conditions more effectively.