Consistant, Effective, filter performance.
Eradicate Particles and Impurities from Multilayer Ceramic Capacitor (MLCC) Layer Surfaces
Pall provides a wide choice of filters for chemical, water, gas and slurry applications in the manufacturing of printed circuit boards, ceramic capacitors and electronic components. Filtration plays a critical role in the manufacturing process for multilayer ceramic capacitors (MLCC), as defects in the layers of the capacitor can detrimentally impact the electrical properties.Pall engineers have focused on two key areas in the process: filtration of the ceramic green sheet casting and filtration of the conductive paste.
Ceramic Green Sheet FIltration
Pall MLCC FIltration solutions help keep critical green sheet casting particles of uniform thickness and free of oversized particles, voids and gel-like deformable contaminants. Large particle contaminants are controlled with Pall customizable solutions. Particles can increase and form due to certain variable aspects of the production process for making barium titanate from barium carbonate and titanium dioxide, as well as from agglomeration of the BT slurry itself.
Large particles or agglomerates can affect the relative shape of the layers, leading to a non-uniform electric field and the occurrence of electrostriction. This can lead to unacceptable audible vibration from an MLCC used in AC service, a condition that can ultimately cause device failure. Pall Corporation has successfully implemented proprietary filtration technologies for both classification and gel retention of ceramic slip forming the green sheet.
Pall Products for Ceramic Sheet FIltration
Pall's Profile® Star filters and Poly-Fine® XLD filters utilize unique hybrids of pleated and depth filter construction to decrease gels and other agglomerations. Effective filtering has become increasingly important for thin layer and high viscosity applications, where the high differential pressures cannot be addressed by traditional depth filters.
Conductive pastes are used to form the inner electrode layer and are mainly made from nickel slurry with an organic “vehicle.” Outside contaminants can cause a decrease in electrical performance by preventing particle line up and that leads to low current flow, leakage, and other electrical defects.. Typical contaminants found in Ni paste also include large particles and agglomerations, and contaminants from raw materials (oversized and agglomerated Ni slurry). Filtration of Ni conductive paste is particularly challenging due to its high viscosity (10,000 to 30,000 cP and 50 wt % to 60 wt %.) Pall Corporation has successfully implemented proprietary filtration technologies for such high viscosity applications.
Pall Products for Conductive Pastes
Pall Corporation’s Ultipor® GF-HV filter contains an additional strong supporting layer to address the high viscosity demands of conductive paste applications. Another viable option is Pall's Fibermet™ (PDF) product family. Utilizing Pall proprietary technology, a unique stainless steel, a sintered microfiber structure is created. The highly porous structure and inherent mechanical strength combine to make this filter media well suited for the high viscosity process conditions.
- Low Cost of Ownership (CoO) and disposable solutions
- Durable construction and long service life
- Increased LC yield and less surface defects
- Suitable for high viscosity situations
Pall MLCC Filters eliminate particle contaminants and reduce defects seen on the integrated layers of the capacitor. Contact a Pall expert help you determine the right solution for your MLCC application.
Contact our team of filtration experts for more information on improving the efficiency of your process.
Providing a wide choice of filters for chemical, water, gas and slurry applications in the manufacturing of printed circuit boards, ceramic capacitors and electronic components.
Let’s find the right solution, together.
Let’s connect. We want to share our innovative filtration solutions with you today. Contact our knowledgeable subject matter experts for information on how we can help. Thank you and we look forward to assisting you shortly.