- Table I-4 to Subpart I of Part 98—Default Emission Factors (1-Uij) for Gas Utilization Rates (Uij) and By-Product Formation Rates (Bijk) for Semiconductor Manufacturing for 300 mm and 450 mm Wafer Size

Link to an amendment published at 89 FR 31921, Apr. 25, 2024.

Table I-4 to Subpart I of Part 98—Default Emission Factors (1-Uij) for Gas Utilization Rates (Uij) and By-Product Formation Rates (Bijk) for Semiconductor Manufacturing for 300 mm and 450 mm Wafer Size

Process type/sub-type Process gas i CF4C2F6CHF3CH2F2CH3F C3F8C4F8NF3SF6C4F6C5F8C4F8O Etching/Wafer Cleaning1-Ui0.650.800.420.210.330.300.180.150.320.150.10NA BCF4NA0.210.0950.0490.0450.210.0450.0460.0400.0590.11NA BC2F60.079NA0.0640.0520.000870.180.0310.0450.0440.0740.083NA BC4F6NANA0.00010NANANA0.018NANANANANA BC4F80.00063NA0.00080NANANANANANANANANA BC3F8NANANANANANANANANANA0.00012NA BCHF30.011NANA0.0500.00570.0120.0270.0250.00370.0190.0069NA BCH2F2NANA0.0036NA0.0023NA0.00150.000860.0000290.000030NANA BCH3F0.0080NA0.00800.0080NA0.00073NA0.0080NANANANA Chamber CleaningIn situ plasma cleaning: 1-UiNANANANANANANA0.23NANANANA BCF4NANANANANANANA0.037NANANANA BC2F6NANANANANANANANANANANANA BC3F8NANANANANANANANANANANANA Remote Plasma Cleaning: 1-UiNANANANANA0.063NA0.017NANANANA BCF4NANANANANANANA0.075NANANANA BC2F6NANANANANANANANANANANANA BC3F8NANANANANANANANANANANANA In Situ Thermal Cleaning: 1-UiNANANANANANANA0.28NANANANA BCF4NANANANANANANA0.010NANANANA BC2F6NANANANANANANANANANANANA BC3F8NANANANANANANANANANANANA

Notes: NA = Not applicable; i.e., there are no applicable default emission factor measurements for this gas. This does not necessarily imply that a particular gas is not used in or emitted from a particular process sub-type or process type.

[81 FR 89256, Dec. 9, 2016]