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Description of the Outgassing Test

The Material Outgassing Characterization test is a qualitative and quantitative analysis of the gaseous substances desorbed from a material after thermal stress. The analysis measures the relative volumetric concentrations of volatile organics and other substances in the vapor state.

Materials used in electronic component manufacturing may severely influence device reliability. The stability of these materials over time may also affect the short and long term device efficiency. To overcome this concern, ORS developed the glass ampoule sealing technique to trap the substances outgassed from a large range of materials.

The material under test is sealed in a glass ampoule, backfilled with dry Nitrogen, Helium, Hydrogen, other gas mixture or sealed under vacuum conditions.

The ampoule containing the material is then subjected to thermal stress. Under the effect of temperature, the material outgasses and these substances are trapped inside the ampoule’s cavity. Specialized IVA and/or GC/MS methods may then be utilized for identification of evolved substances.

Through the combination of various time and temperature conditions, the outgassing profile of materials may be plotted and modelled for standard and extreme conditions of use, as well as long term aging.

Typical Glass Ampoules
Typical Glass Ampoules

For detailed information, read the Outgassing Characterization with Glass Ampoules article.

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