Class 1 COG Dielectrics

Class 1 COG Dielectrics

C0G (NP0) dielectrics are the most popular formulations of the “temperature-compensating,” EIA Class I ceramic materials. C0G (NP0) ceramics offer one of the most stable capacitor dielectrics available. Capacitance change with temperature is less than 30ppm/°C which is less than 0.3% ∆C from -55°C to +125°C. Capacitance drift or hysteresis for C0G (NP0) ceramics is negligible, less than 0.05% versus up to 2% for films. Typical capacitance change with life is less than 0.1% for C0G (NP0), one-fifth that shown by most other dielectrics. C0G (NP0) formulations show no aging characteristics.

Print This Table

VLF-220Aq3 VLF-220Aq4 VLF-440 LF-085 VLF-101
Technical Data Sheets  Click Here  Click Here  Click Here  Click Here  Click Here
Dielectric Type COG COG COG COG COG
Dielectric Properties
 Dielectric Constant 23 ±2 23 ±2 40 ±5 85 ±10 100 ±5
 Dissipation Factor, % @1MHz ≤0.08 ≤0.08 ≤0.10 ≤0.10 ≤0.08
Insulation Resistance, GΩ
@25°C >1,000 >1,000 >1,000 >1,000 >1,000
@125°C >100 >100 >100 >100 >100
Dielectric Breakdown Strength, Vdc/μm ≥ 60 ≥ 60 ≥ 60 ≥ 60 ≥ 60
Powder Properties
Particle Size Distribution, μm
D90 ≤ 1.500 ≤ 1.900 ≤ 3.000 ≤ 4.000 ≤ 1.500
D50 0.575 ±0.125 0.675 ±0.175 0.600 ±0.150 0.700 ±0.250 0.500 ±0.100
D10 0.375 ±0.125 0.375 ±0.125 0.375 ±0.125 0.350 ±0.100 0.300 ±0.100
Surface Area, m2/g 4.10 ±0.60 4.00 ±1.00 3.75 ±0.75 2.40 ±1.00 6.00 ±1.00
Powder Density, g/cm3 ≥ 4.10 ≥ 4.00 ≥ 4.50 ≥ 5.25 ≥ 5.40
L.O.I, % @650°C ≤ 1.00 ≤ 1.00 ≤ 1.00 ≤ 1.00 ≤ 1.00
Slurry Compatibility Compatible with both solvent- & aqueous-base systems Compatible with both solvent- & aqueous-base systems Compatible with both solvent- & aqueous-base systems Compatible with both solvent- & aqueous-base systems Compatible with both solvent- & aqueous-base systems
Recommended Firing Conditions 975C ±10C for 5 hours in air 940C ±10C for 5 hours in air 985C ±10C for 5 hours in air 1100C ±20C for 5 hours in air 970C ±10C for 5 hours in air
Setters Recommendations Open Al2O3 setters or crucibles Open Al2O3 setters or crucibles Open ZrO2 setters Open ZrO2 setters Open ZrO2 setters
 Electrode Metal Compatibility Up to 95% Ag/ 5%Pd Up to 100% Ag Up to 95% Ag/ 5%Pd Up to 75% Ag/ 25%Pd Up to 95% Ag/ 5%Pd
Recommended Electrode Paste MRA EI-9505-COG MRA EI-9010-COG1 MRA EI-9010-COG1 MRA EI-7030-COG MRA EI-9010-COG1
 RoHS Compatibility rohs-compliance-logo-table rohs-compliance-logo-table rohs-compliance-logo-table rohs-compliance-logo-table rohs-compliance-logo-table