Design process semiconductor industry

Generally, epitaxial films have superior properties and, whenever possible, epitaxial growth should be promoted. The epitaxial CVD of silicon and III-V and E-VI compounds is now a major process in the semiconductor industry and is expected to play an increasingly important part in improving the performance of semiconductor and optoelectronic designs (see Chs. 13-15). 

System installation in a permanent location may require a sample conditioning system featuring some degree of automation, such as automatic cleaning (the system illustrated above features such a system) and outlier sample collection and the need to interface to an existing control system process computer. The latter may require that the system operates with a standardized communications protocol, such as Modbus, for the chemical industry. Certain specialized industries use different protocols, such as the semiconductor industry, which uses SECS and SEC-11 protocols. A standardized approach designated the Universal Fieldbus is another method/protocol for process analyzers which is being supported by certain hardware manufacturers. 

In several industries (automobiles, semiconductors), failure modes and effects analysis has been the technique of choice by design engineers for reliability and safety considerations. They are used to evaluate (a) the ways in which equipment fails and (b) the response of the system to those failures. Although an FMEA is typically made early in the design process, the technique can also serve well as an analysis tool throughout the life of equipment or a process. 

Guidelines issued by the semiconductor industry provide another indication of a trade association having recognized the value of hazard analysis and risk assessments in the design process to eliminate or control hazards and to attain acceptable risk levels. To do what the issued guidelines propose requires that manufacturers have persoimel on their staffs who are skilled in hazard analysis and risk assessment. 

---