SEMI International Standards
Standards New Activity Report Form (SNARF)
Date Prepared: 11/17/2008Revised (if Applicable): 10/04/2010

Document Number: 4704
SNARF for: Definition of Active Time and Wait Time

Originating Global Technical Committee: Metrics
Originating TC Chapter: Japan
Task Force (TF) in which work is to be carried out: Cycle Time Metrics Task Force
Note: If a new task force is needed, also submit a task force organization form (TFOF)

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.)
“Cycle Time” reduction has been one of the primary goals of productivity improvement activities lead by ISMI. (e.g., ISMI 300 Prime / 450 mm Industry Briefing, 06 Dec 2006).
In order to manage “Cycle Time”, it is deemed necessary to develop categorization method that can be applied to analysis of cycle time and its components..

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

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:

- Definition of “product cycle time”
- Definitions of “efficient time” and “inefficient time”
>This document allow the observer (of the cycle time under observation) to define “efficient time” and “inefficient
time” for the purpose of observation.

- Concept of “resource cycle time” (time components related to resource activity) and its “projection”
- Concept of “upper tier induced (inefficient time)”,“lower tier induced (inefficient time)” and “observation horizon”
- Potential: Discussion on “resource induced (inefficient time)” and its components
- Potential: Examples with particular observation point of view as RI

b: Expected result of activity
New Standard or Safety Guideline (including replacement of an existing Standard or Safety Guideline)

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

For Standards, identify the Standard Subtype below:

Miscellaneous (describe below):

3. Projected Timetable for Completion:

a: General Milestones
a. Activity Start: 09/11/2008b. 1st Draft by: 10/01/2009
c. (Optional) Informational Ballot by: d. Letter Ballot by: 10/04/2010
e. TC Chapter Approval By:12/07/2011

4. Liaisons with other Global Technical Committees/TC Chapters/Subcommittees/TFs:
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:
will not be issued

Identify the recipient global technical committee(s):

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 15.1 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.

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 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 reproduced 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 16 of the Regulations must be followed.)

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

7. Comments, Special Circumstances:

This SNARF was revised as folows;
1st Revision 2009/10/01
2nd Revision 2010/10/4

8. TC Member Review:

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)
9.. SNARF Approval Dates:
TC Chapter or GCS10/01/2009
Recorded in TC Minutes12/05/2008
Attach Pictures and Files here: