SEMI International Standards
Standards New Activity Report Form (SNARF)
Revised (if Applicable):
Revision of MF391-0310: Test Methods for Minority Carrier Diffusion Length in Extrinsic Semiconductors by Measurement of Steady-state Surface photovoltage
Originating Global Technical Committee:
Originating TC Chapter:
Task Force (TF) in which work is to be carried out:
Japan Test Method Task Force
Note: If a new task force is needed, also submit a task force organization form (TFOF)
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.)
JEITA standard documents on test method for silicon wafer are facing difficulties to be maintained due to the dissolution of corresponding JEITA committee. Those JEITA standards have been referred to by some of SEMI Standard documents. Therefore, important descriptions (or documents) in JEITA documents are required to be transferred to the corresponding SEMI Standards. The purpose of this activity is to transit effective descriptions from JEITA document to SEMI Standard, regarding sample preparation method for minority carrier diffusion length measurement in silicon wafers by surface photovoltage method.
b. Estimate effect on industry.
4: Slight effect or effect not determinable
Sector or Company Information:
c. Estimate technical difficulty of the activity.
II: Some Difficulty - Disagreements on known requirements exist but developing consensus is possible
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:
The scope of this activity is proposal of revision for SEMI MF391-0310 “Test methods for minority carrier diffusion length in extrinsic semiconductors by measurement of steady-state surface photovoltage”. In JEITA EM-3511 “Method for measuring Fe concentration in p-tyoe silicon wafers by using surface photovoltage method” contains the result of round robin test..
b: Expected result of activity
Major revision to an existing Standard or Safety Guideline
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
For Standards, identify the Standard Subtype below:
3. Projected Timetable for Completion:
a: General Milestones
a. Activity Start:
b. 1st Draft by:
c. (Optional) Informational Ballot by:
d. Letter Ballot by:
e. TC Chapter Approval By:
4. Liaisons with other Global Technical Committees/TC Chapters/Subcommittees/TFs:
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.)
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):
Identify the recipient global technical committee(s):
5. Safety Considerations:
The resulting document is expected:
NOT to be a Safety Guideline
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
for special procedures to be followed.
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:
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:
For Revision, Reapproval, Reinstatement, or Withdrawal of existing Standard(s) and Safety Guideline(s):
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 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
§ 16 must be followed.
will incorporate Copyrighted Item’
: A copyright release letter must be obtained from the copyright owner prior to publication.
7. Comments, Special Circumstances:
TC Member Review:
Member Review Start Date;
Member Review End Date:
‘TC Member Review’ is required by the
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
9. SNARF Approval Dates:
TC Chapter or GCS
Recorded in TC Minutes
10. SNARF Extension Dates:
TC Chapter Extension Granted on
Extension Expires on
Attach Pictures and Files here: