Aluminium oxide disks from Seifert consist of an Al2O3 – ceramic with high hardness and very good chemical stability.
They are used in the insulating mounting of semiconductor components in high voltage ranges. In addition to the high dielectric strength of up to 250 KV/cm, the wafers have good thermal conductivity.
The aluminium oxide discs are available for various common housing designs. Due to their very flat surfaces they are only slightly susceptible to breakage.