olemus
alusmaterjal tahkiselektroonikas, näiteks räni
= the supporting material upon which or within which the elements of a semiconductor device are fabricated or attached

ülevaateid
https://www.jedec.org/standards-documents/dictionary/terms/substrate-semiconductor-device-1-general

https://en.wikipedia.org/wiki/List_of_semiconductor_materials

https://en.wikipedia.org/wiki/Wafer_(electronics)