SEMI International Standards
Standards New Activity Report Form (SNARF)
Date Prepared: 09/23/2026Revised (if Applicable):

Document Number: 7521
SNARF for: Revision of SEMI E10-0422 - Specification for Definition and Measurement of Equipment Reliability, Availability, and Maintainability (RAM) and Utilization
and SEMI E79-0422 – Specification for Definition and Measurement of Equipment Productivity

Originating Global Technical Committee: Metrics
Originating TC Chapter: North America
Task Force (TF) in which work is to be carried out: Equipment RAMP (Reliability, Availability, Maintainability, and Productivity) Metrics 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.)
As members implement the SEMI E10 and E79 standards, some issues have been reported that need to be resolved in the Standard. This SNARF proposes update for those issues as well as update the document per the 5-year cycle review.


b. Estimate effect on industry.
3: Major effect on a few companies - identify the relevant companies
Sector or Company Information: Companies that use SEMI E10 and E79

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:
As part of this revision ballot, the task force will investigate the following topics:

- Definition clarifications, revisions, and additions
- Update Limitations to include additional constraints including yield and cycle time.
- Update related information and appendices with clarifications and additions.
- Update and review failure and advanced notice model content.
- Updates to SEMI E79 to synchronize with proposed changes to SEMI E10.

Any other changes to address features or defects, or issues with the Style Manual raised by Task Force members during the development and review of the proposed changes related to these line item topics. Significant changes in scope still require a SNARF revision in compliance with SEMI Regulations.

b: Expected result of activity
Major revision to two or more existing Standards or Safety Guidelines

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


Modification of an existing part of Standard(s) or Safety Guideline(s) including Appendices, Complementary Files, and Supplementary Materials, Addition of one or more Appendices or Complementary Files to an existing Standard or Safety Guideline, Addition of one or more Related Information sections or Various Materials to an existing Standard or Safety Guideline

For Standards, identify the Standard Subtype below:
Specification

Miscellaneous (describe below):

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3. Projected Timetable for Completion:

a: General Milestones
a. Activity Start: 09/01/2026b. 1st Draft by: 01/01/2027
c. (Optional) Informational Ballot by: d. Letter Ballot by: 03/01/2027
e. TC Chapter Approval By:06/01/2027

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4. Liaisons with other Global Technical Committees/TC Chapters/Subcommittees/TFs:
a. List SEMI 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 and scopes as needed.)


b. List any planned Type I Liaisons with external nonprofit organizations (e.g., SDO) that should receive Draft Documents from Standards staff for feedback during this activity and be notified when the Letter Ballot is issued (refer to Procedure Manual § 7):


c. Intercommittee Ballots:
will not be issued

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 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.

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6. Intellectual Property Considerations:
Note: Both a: and b: below should be checked for Revision of existing Standard(s) and Safety Guideline(s).

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:


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):
there is no known material patented technology necessary to use or implement the 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:
the incorporation of Copyrighted Item will NOT be required



NOTE FOR ‘the use of patented technology or the incorporation of Copyrighted Item(s) is NOT required’: If in the course of developing the Document, it is determined that the use of patented technology or Copyrighted Item(s) is necessary for the Document, the provisions of Regulations § 16 must be followed.

NOTE FOR ’will incorporate Copyrighted Item’: A copyright release letter must be obtained from the copyright owner prior to publication.

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7. Comments, Special Circumstances:
None.

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8. TC Member Review:
took place between (put dates below) before approval by the GCS, or

Member Review Start Date; 09/24/2026
Member Review End Date: 10/10/2026

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. (Refer to Regulations ¶ 8.2.1)
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9. SNARF Approval Dates:
TC Chapter or GCS10/15/2026
Recorded in TC Minutes

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10. SNARF Extension Dates:
TC Chapter Extension Granted on
Extension Expires on