What is a Weighing Room or Dispensing Booth?A Weighing Room or Dispensing Booth is a highly specialized and enclosed area tailored to provide a controlled and precise environment for the accurate weighing and dispensing of various materials. Here’s a detailed breakdown of its key features, applicati

In photolithography, even invisible micro-vibrations can cause pattern blurring and yield loss. This technical guide explains how FFUFAN achieves vibration levels below 0.5 mm/s (RMS). We explore our engineering approach, including dynamically balanced impellers, shock-absorbing motor mounts, and rigid structural designs tailored for ISO Class 1 Lithography zones.

Airborne Molecular Contamination (AMC)—categorized as Acids (MA), Bases (MB), Condensables (MC), and Dopants (MD)—poses a critical threat to sub-10nm semiconductor processes. This technical guide details how to combat these contaminants using a Dual-Stage Filtration Strategy. We analyze the shift from traditional glass fiber to Low-Outgassing PTFE media to prevent Boron contamination and explain the role of Ion Exchange chemical filters in protecting sensitive Lithography and Etching zones."

Determining the optimal time to replace HEPA or ULPA filters in cleanrooms should not be based on calendar schedules, but rather on condition-based monitoring using pressure differential (measured in Pascals, Pa). Replacing filters too early wastes budget, while replacing them too late compromises airflow velocity and production yield. The standard procedure involves recording the "initial resistance" (pressure drop) when new filters are installed at proper airflow (e.g., 0.45 m/s). Filters should generally be replaced when the pressure differential reaches twice (2x) the initial resistance, or immediately if the Fan Filter Unit (FFU) can no longer maintain required airflow velocities even at maximum power. Deshengxin Purification Equipment Co., Ltd., as a full-industry chain manufacturer, ensures consistent initial resistance specs, making predictive maintenance accurate.

Addressing Electrostatic Discharge (ESD) in semiconductor and electronics cleanrooms requires a multi-faceted approach tackling both equipment accumulation and product surface charges. Deshengxin Purification Equipment Co., Ltd. implements a three-tier strategy based on over 20 years of manufacturing experience. Firstly, passive prevention is achieved using Fan Filter Units (FFUs) with conductive housings (stainless steel or anti-static painting) to stop charge buildup on the hardware. Secondly, active neutralization is provided by specialized Ionizing FFUs integrated with ionizer bars, which shower the work area with balanced ions to neutralize charges on sensitive products. Finally, Deshengxin provides complete ESD-safe environments through conductive Clean Benches and modular Clean Booths to ensure comprehensive static control.