SEMI International Standards
Standards New Activity Report Form (SNARF)
Date Prepared: 01/10/2008Revised (if Applicable): 04/01/2008

Document Number: 4556
SNARF for: New Standard:Method For The Determination Of Surface Areas Of Polymer Pellets

Originating Global Technical Committee: Liquid Chemicals
Originating TC Chapter: North America
Task Force (TF) in which work is to be carried out: Method for the Determination of Surface Areas of Polymer Pellets Task Force
Note: If a new task force is needed, also submit a task force organization form (TFOF)

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1. Rationale:
a. Describe the need or problem addressed by this activity.
(Indicate the customer, what benefits they will receive, and if possible, quantify the impact on the return on investment [ROI] if the Document is implemented.)
Knowing the surface area of small objects, such as polymer pellets used in the injection molding or extrusion of high purity polymer components, is important when calculating surface contamination values required in SEMI F57 and then later relating them to any contamination found in the finished component.

The surface area of a given manufactured component is easy to obtain. However, the surface area of a polymer pellet is somewhat difficult since it does not adhere to strict Euclidian principles (spheres, cylinders, etc . . .).

Without knowing relatively accurate surface areas it becomes difficult to investigate the source of any contamination. That is to say, is it from the raw material or the component manufacturing process?

Such a tool for determining surface area in these objects would give all parties within the component manufacturing chain the ability to troubleshoot the source(s).

Additionally, the taskforce believes that such a method could be useful in other industries related to microelectronics.



b. Estimate effect on industry.
2: Major effect on an industry sector - identify the relevant sector
Sector or Company Information:

c. Estimate technical difficulty of the activity.
II: Some Difficulty - Disagreements on known requirements exist but developing consensus is possible

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2. Scope:
a: Describe the technical areas to be covered or addressed by this Document development activity. For Subordinate Standards, list common concepts or criteria that the Subordinate Standard inherits from the Primary Standard, as well as differences from the Primary Standard:
A taskforce would investigate three different methods for determining the surface area, define the procedure and document the limitations of each.

b: Expected result of activity
New Standard

For a new Subordinate Standard, identify the Primary Standard here:




For Standards, identify the Standard Subtype below:


Miscellaneous (describe below):

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3. Projected Timetable for Completion:

a: General Milestones
a. Activity Start: 01/01/2008b. 1st Draft by: 06/01/2008
c. (Optional) Informational Ballot by: d. Letter Ballot by: 10/01/2008
e. TC Chapter Approval By:01/01/2009

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4. Liaisons with other Global Technical Committees/TC Chapters/Subcommittees/TFs:
a.
List global technical committees, TC Chapters, subcommittees, or task forces in your or other Regions/Locales that should be kept informed regarding the progress of this activity. (Refer to SEMI Standards organization charts and global technical committee charters as needed.)


b. Intercommittee Ballots:


Identify the recipient global technical committee(s):

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5. Safety Considerations:
The resulting document is expected:
NOT to be a Safety Guideline

NOTE FOR "to be a Safety Guideline": When all safety-related information is removed from the Document, the Document is NOT technically sound and complete - Refer to Section 14.1 of the Regulations for special procedures to be followed.

NOTE FOR "NOT to be a Safety Guideline": When all safety-related information is removed from the Document, the Document is still technically sound and complete.

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6. Intellectual Property Considerations:
a. For a new Standard or Safety Guideline and for any part to be modified or added in a Revision of published Standards and Safety Guidelines:
the use of patented technology or a copyrighted item(s) is NOT required

If "patented technology is intended to be included in the proposed Standard(s) or Safety Guideline(s) " is selected above, then also check one:


b. For Revision, Reapproval, Reinstatement, or Withdrawal of existing Standard(s) and Safety Guideline(s):


c. The body of the Document and any Appendices, Complementary Files, Related Information sections, or Various Materials that may or may not be a part of the Document by reference:
will NOT include copyrighted material



NOTE FOR "the use of patented technology or a copyrighted item(s) is NOT required": If in the course of developing the document, it is determined that patented technology or copyrighted item(s) must be used to comply with the standard or safety guideline, the provisions of Section 15 of the Regulations must be followed.)

NOTE FOR "will include reproduced copyrighted material": A copyright release letter must be obtained from the copyright owner.

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7. Comments, Special Circumstances:
None.

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8. TC Member Review:
None.

Member Review Start Date; None.
Member Review End Date: None.

NOTE FOR ‘TC Member Review’ is required by the Regulations for a period of at least two weeks
before approval of a new, or a major revision of an existing, Standard or Safety Guideline. (See Regulations 8.2.1)
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9.. SNARF Approval Dates:
TC Chapter or GCS01/10/2008
Recorded in TC Minutes
Attach Pictures and Files here: