■ We supply insulators with the surface roughness appropriate to each type of film (standard, lapped and polished). Everything from low to high resistance can be accommodated.
■ Specifications other than the standard specifications below may also be possible; please contact us.
PRODUCTS Ceramic Insulator for Fixed Resistor
Standard Specifications
| Material | Alumina | Mullite | ||||
|---|---|---|---|---|---|---|
| Product code | A-98 | A-96 | A-93 | A-80 | A-85 | NK-3 |
| Main Component | Al2O3 98% |
Al2O3 96% |
Al2O3 93% |
Al2O3 85% |
Al2O3 80% |
Al2O3·Si2O3 70% |
| Dimensions Outer dia. (× inner dia.) × length (mm) |
0.6(x0.2)x2 0.4(x0.2)x2, etc. |
1x3.1, 1.3x2.7, 1.7x5.5, 2.5x8, 3.5x10, 4x14, 7x23, 7x51, etc. Note: A-93 is 4.5 mm or less in outer diameter and A-96 is 2.5 mm or less in outer diameter. |
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| Standard shape | Column, pipe | |||||
Specifications
| Material | Unit | Alumina | Corundum-mullite | |||||
|---|---|---|---|---|---|---|---|---|
| Product code | - | A-98 | A-96 | AR-96 | A-3 | A-85 | A-80 | NK-3 |
| Main Component | - | Al2O3 98% |
Al2O3 96% |
Al2O3 93% |
Al2O3 85% |
Al2O3 80% |
Al2O3-3Al2O3*2SiO2 | |
| Color | - | White | ||||||
| Important applications | - | Sensor | Film resistors, insulation parts | |||||
| Apparent specific gravity | g/cm³ | 3.80 | 3.70 | 3.60 | 3.50 | 3.50 | 3.30 | |
| Water absorption | % | <0.01 | ||||||
| 3-point flexural strength | MPa | 340 | 320 | 290 | 260 | 190 | 170 | |
| Coefficient of thermal expansion (25-1000°C) | ×106/K | 8.0 | 7.9 | 7.8 | 7.1 | |||
| Thermal conductivity | W/m·K | 20 | 19 | 16 | 9.2 | 6.2 | 4.1 | |
| Dielectric strength | kV/mm | 15 | 7 | 10 | ||||
| Volume resistivity (300°C) | Ω·m | >1010 | >1011 | >1010 | ||||
Contact for inquiries about this product
Sales and Business Control Group
We can also meet online (web conference) or via LINE and other messaging apps. Please contact us below if you would like to arrange this.