SEMI Industry Classification System Introduction

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SEMI® Industry Classification System Introduction

SEMI has developed the SEMI Industry Classification System (SICS)—a comprehensive product classification system for the suppliers that support all the various industry segments of the SEMI Trade Association, not just Semiconductor, effective in 2003. The SICS continues to be refined based on member and industry feedback. The second revision incorporates over 150 changes made in the past year and was released October 2003 to be effective for 2004. SEMI serves not only the Equipment, Materials and Service suppliers to the semiconductor device manufacturers, but also similar systems, materials and services used to Manufacture Displays, MEMS, Photonics, Disk Storage systems and other emerging technologies.

This industry classification system provides taxonomy—a consistent nomenclature and structure— to organize and categorize the thousands of products and services provided by SEMI members. In addition to harmonizing the listings that SEMI uses for SEMI membership, expositions, event registration, publication demographics and market statistics, the SEMI Industry Classification System provides an industry-wide resource to standardize terms making it much easier to find and locate needed resources within the SEMI Web site and eventually other classification systems as it becomes widely adopted.

To capture the breadth of our industry, the categories are generic by function and do not imply application or substrate type or size. This would be a configuration choice offered by the supplier. Consequently, these categories are general in nature, and by design are condensed to accommodate all member products and still be a manageable size. There are future plans to expand this classification to a more detailed product level version (on-line).

In addition to reorganizing categories that have been in use for many years as well as updating and adding others, the SEMI Industry Classification System has other benefits:

  • It promotes the use of consistent terminology and definitions throughout the industry.
  • It complements the new SEMI portal Web site that helps tag disparate information from within SEMI and from other outside sources to be found by the search engine.
  • It is a collaboration effort between SEMI, RosettaNet and UNSPSC to move towards one harmonized classification system, not yet another. It is the basis for the Semiconductor Manufacturing (SM) part of the RNTD within Version 3.0 published March, 2003.
  • It will help standardize content classification across a variety of industries.
  • It provides more accurate and complete representation of all SEMI members, associated companies and vertical industries.

If you are not sure what a category includes, here is a version with definitions available for your reference:

Click here: SEMI Industry Classification System

Click here: SEMI Industry Classification System: Japanese Version

Click Here: SEMI Industry Classification System: Chinese Version

Also for your reference is a cross-reference sheet showing the changes from the previous version—click here View Rev 3 to Rev 4

If you still have questions or feel that your company’s products are not represented, you may send an email to; put SICS in the subject line. We do welcome and encourage input to improve this classification system for future revisions.

Other Classification Systems

The acronym SEMI Industry Classification System (SICS) is close, but not the same as the Standard Industrial Classification (SIC) developed by the U.S. government in the late thirties. It's intent was to allow the collection of statistical data for all businesses. It was last revised in 1987 and since replaced by the North American Industry Classification System (NAICS). NAICS was introduced in 1997 as a replacement for the SIC, but also to include Canada and Mexico with the advent of North American Free Trade Agreement (NFTA). It is also based on business type and economic data, not product and service classes and is currently maintained by the U.S. Census Bureau. It is aligned with the International Standard Industrial Classification System (ISIC), developed and maintained by the United Nations.

The SEMI SICS is a classification designed around description, product and service functionality; and is aligned with the United Nations Standard Products and Services Code (UNSPSC). The UNSPSC was a merger of Dunn & Bradstreet's Standard Product and Services Codes (SPSC) and United Nations Common Coding System (UNCCS) in 1999. Dunn & Bradstreet maintained it under contract to the United Nations Development Programe (UNDP) until April 2003 when administration duties were turned over to the Uniform Code Council (UCC). There was a split off from a previous code manager, Electronic Commerce Code Management Association (ECCMA), which maintained a duplicate code set also called UNSPSC, but the two have made an amicable resolution and the two code sets have been combined as of March 2003, version 6_0315u. UCC also operates a wholly-owned subsidiary, RosettaNet.

RosettaNet is a non-profit consortium of major Information Technology, Electronic Components, Semiconductor Manufacturing and Telecommunications companies working to create and implement industry-wide, open e-business process standards. These standards form a common e-business language, aligning business transaction processes between supply chain partners on a global basis. SEMI is a RosettaNet member and the SICS is aligned with the RosettaNet Technical Dictionary (RNTD), an integral foundational program to enable RosettaNet PIPs ®.

More information on NAICS is available at:

More information on UNSPSC is available at:

More information on RosettaNet is available at: