Semiconductor Tools
Engineering calculators and technical notes for semiconductor process and equipment reference. Gas flow conversion, vacuum calculators, MFC basics, pumpdown estimation, and technical articles for process and equipment engineers.
MFC Gas Flow Unit Converter
Convert between sccm, slm, g/min, and kg/hr for N2, Ar, O2, H2, He at STP conditions.
Use tool →sccm → Pumping Speed Calculator
Flow + pressure → required pumping speed (S = Q/P). Cryo, throttle, pressure analysis.
Use tool →Advanced Pump Down Time Predictor
Pump curve + conductance + gas load → pumpdown curve and throughput balance.
Use tool →Throughput & Leak Rate Converter
sccm ↔ mbar·L/s ↔ Torr·L/s ↔ Pa·m³/s + rate-of-rise leak calculator.
Use tool →Vacuum Conductance & Effective Pumping Speed
Tube/orifice conductance + pump speed → effective pumping speed S_eff.
Use tool →Pumpdown Log Analyzer
Fit ln(p) vs t → S/V, estimate S_eff and Q_total from real pumpdown data.
Use tool →Gas Mixture Partial Pressure Calculator
MFC flows + total pressure → y_i and p_i for each gas.
Use tool →Impingement Rate · Monolayer Time · Langmuir
Pressure + T + gas → flux, monolayer time, and Langmuir exposure.
Use tool →Mean Free Path Calculator
Calculate mean free path for Ar, N2, H2, He, Kr, Xe from pressure.
Use tool →Technical Articles
Learn about sccm, STP definitions, MFC accuracy, pressure units, and vacuum conversions.
Read articles →Reference Data
Gas properties and unit conversions sourced from NIST Chemistry WebBook and SEMI standards.
View tools →Why Engineers Need This Platform
Semiconductor manufacturing requires precise gas flow control and accurate pressure measurement. MFC (Mass Flow Controller) specifications are often given in sccm or slm, while process recipes may require mass flow units like g/min or kg/hr. Vacuum systems and process equipment use various pressure units (Pa, bar, Torr, mmHg, psi). Converting between these units manually is error-prone and time-consuming. Our tools provide instant, accurate conversions based on NIST reference data.
Latest Articles
- MFC calibration basics for process engineers— Zero check, span verification, failure modes
- Pumpdown time prediction guide— Pump curves, conductance, and gas load
- Molecular vs viscous flow in vacuum piping— Flow regimes and conductance formulas
- STP, NTP, and standard conditions for gas flow— Avoiding conversion errors in recipes