2-36.Reclaim Grade
Reclaim Grade:A lower quality wafer that has been used in manufacturing and then reclaimed , etched or polished, and then used a second time in manufacturing.
2-36.Reclaim Grade
Reclaim Grade:A lower quality wafer that has been used in manufacturing and then reclaimed , etched or polished, and then used a second time in manufacturing.
5-5-6 SiC Device Packaging and System Considerations Hostile-environment SiC semiconductor devices and ICs are of little advantage if they cannot be reliably packaged and connected to form a complete system capable of hostile-environment operation. With proper material selection, modifications of existing IC packaging technologies appear [...]
5-7-1 Future Tied to Material Issues The previous sections of this chapter have already highlighted major known technical obstacles and immaturities that are largely responsible for hindered SiC device capability. In the most general terms, these obstacles boil down to a handful of key fundamental [...]
2-21.Usable Area A cumulative subtraction of all noted defect areas from the frontside wafer quality area within the edge exclusion zone. The remaining percent value indicates the proportion of the frontside surface to be free of all noted defects (does not include edge exclusion).
3-3. Dimpling A texture resembling the surface of a golf ball. Speci ed in % affected area.
5-5-2 SiC-Selective Doping: Ion Implantation The fact that diffusion coefficients of most SiC dopants are negligibly small (at 1800°C) is excellent for maintaining device junction stability, because dopants do not undesirably diffuse as the device is operated long term at high temperatures. Unfortunately, this characteristic also largely [...]
2-10.Cracks A fracture or cleavage of the wafer that extends from the frontside surface of the wafer to the back-side surface of the wafer. Cracks must exceed 0.010” in length under high intensity illumination in order to discriminate fracture lines from allowable crystalline striations. Fracture [...]
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