SEMI MS8 - Guide to Evaluating Hermeticity of Microelectromechanical Systems (MEMS) Packages

Volume(s): MEMS
Language: English
Type: Single Standards Download (.pdf)
Abstract

NOTICE: This Document was reapproved with minor editorial changes.

 

Microelectromechanical systems (MEMS) are miniaturized systems requiring packaging for environmental protection and for interconnection. While there are a wide range of MEMS devices, a common need is for packaging that allows movement of the internal device during operation. This is in contrast to the typical integrated circuit that requires only that the device be protected from the environment and that appropriate interconnections are made. In many cases, hermeticity is critical to MEMS device functionality. In other cases, hermeticity is primarily important to reliability of MEMS devices, similarly to integrated circuits. To accelerate improvements of packaged MEMS devices, leading to higher levels of marketplace acceptance, a guide to evaluating hermeticity of MEMS packages is required.

 

This Document is intended to provide an overview of hermetic packaging with emphasis on the evaluation of hermeticity of the smaller internal volumes typical of MEMS.

 

This Guide is directed towards evaluating hermeticity of MEMS packages. Areas to be addressed include materials and equipment for producing and evaluating hermetic seals; methods for detection and measurement of leakage; and considerations and recommendation on evaluation of hermeticity.

 

This Guide is applicable for use in connection with establishment of evaluation methods and procurement of materials, equipment and facilities relating to manufacturing, quality and reliability assurance for all phases of research, development, and production.

 

Devices for which this Guide is expected to be relevant include, but are not limited to; gyroscopes and accelerometers, RF MEMS switches, optical mirrors and switches, pressure sensors, resonators, filters, and microfluidics devices including valves and pumps.

 

Referenced SEMI Standards

SEMI MS3 — Terminology for MEMS Technology

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