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Class I COG Dielectric Powders and Formulations
Ferro is a leading global supplier of EIA Class I formulated dielectric powders designed for use in the manufacture of COG type ceramic components such as single layer capacitors (SLC), multilayer ceramic capacitors (MLCC), multichip modules and other devices where temperature compensating and extended frequency performance is required.

As a preferred industry source, Ferro offers a large portfolio of optimal dielectric material systems for specific component designs and processing requirements. This portfolio includes precious metal (PME) and base-metal (BME) compatible dielectrics.
In addition to dielectric powders, Ferro can often supply matched electrode and termination inks designed to help reduce product development cycles and to optimize the performance of electronic components.
FERRO EIA CLASS I COG TYPE FORMULATED DIELECTRIC POWDERS
High Fire COG Type Dielectric Powders Our High Fire COG type powders are compatible with precious metal conductors and air-fire in the 1280°C -1340°C range. Inner electrode compositions range from 100% Pd to 30%Ag/70%Pd. |
Low Fire COG Type Dielectric Powders Our Low Fire COG type powders are compatible with precious metal conductors and air-fire in the 1100 to 1150°C range. Typical inner electrode composition is 70%Ag/30%Pd. |
Ultra Low Fire COG Type Dielectric Powders Our Ultra Low Fire (ULF) COG type powders are compatible with precious metal conductors and air-fire in the 860°C to 990°C range. Inner electrode compositions range from 90%Ag/10%Pd to 100%Ag. Most COG type dielectric powders are formulated and processed to be RoHS and REACH compliant. |
Base Metal Electrode (BME) COG Type Dielectric Powders Our BME COG dielectric powders are compatible with 100% Ni inner electrodes and fire in low pO2 atmospheres in the 1200 to 1225°C range. Re-oxidation / annealing is required after firing. All BME COG type dielectric powders are formulated and processed to be RoHS and REACH compliant . |

COG TYPE DIELECTRIC APPLICATIONS
- Capacitors
- Filters
- Fuses
- Inductors
- RF / 5G - High-Frequency Apps
- Sensors
- Chip Antennas
- Multichip Modules
COG TYPE DIELECTRIC POWDERS PRODUCT INFORMATION
High Fire COG Type Dielectric Powders
Low Fire COG Type Dielectric Powders
Ultra-Low Fire COG Type Dielectric Powders
Base Metal Electrode (BME) COG Type Dielectric Powders

VALUE ADDED SERVICES
Ferro takes great pride in our reputation for providing customers with superior technical service and manufacturing support. Our highly skilled technical professionals combine decades of experience with extensive laboratory and technology resources which enables us to provide outstanding customer support and service.
Development of Custom Material Systems
We help our customers meet the changing needs of the electronic component industry. This includes fulfilling component design needs that simply cannot be met using traditional ceramic dielectric formulations. We work closely with our customers to develop innovative dielectric and conductor material systems that are tailored to meet specific performance targets.
To find out more on our dielectric material development capabilities
Toll Manufacturing and Custom Processing
Our extensive and flexible manufacturing capabilities help our customers produce high-quality products in varying quantities and formulations. Ferro’s process engineering and operations teams are ready to enable our customers to go to market faster by providing a full range of custom contract manufacturing, joint development programs, and toll processing capabilities.