semi insulating sic substrate for rf devices

{"cid":"91184473","title":"6Inch Silicon Carbide Semi-insulating SiC Composite Substrate P Type N Type Single Polish Double Polish Production Grade","imgUrl":"https:\/\/img.chinax.com\/nimg\/b5\/49\/a525340e15a317b056a31031d32e-200x200-1.jpg","attrs":{"Price":"by case","Brand Name":"ZMSH","Model Number":"4H SiC","Minimum Order Quantity":"10pc","Delivery Time":"in 30days","Certification":"rohs","Place of Origin":"CHINA","Payment Terms":"T\/T","Supply Ability":"1000pc\/month","Packaging Details":"customzied plastic box","Material":"Silicon Carbide","Size":"6Inch","Dia":"150 mm \u00b1 0.22 mm","Resistivity":"\u22651E8ohm\u00b7cm","Warp":"\u226435\u03bcm","Parameter":"Semi, P, N Type","Ttv":"\u22645\u03bcm","Roughness":"Ra\u22640.2nm","Surface Finish":"Single or double side polished","Applications":"Power electronics, Optoelectronics","Customized":"ok"}}

{"cid":"91191224","title":"Light Color Crystal Structure 4H-SiC 6H-SiC Semi-Insulating SiC High Mechanical Hardness","imgUrl":"https:\/\/img.chinax.com\/nimg\/06\/be\/c550d8195f3838bb3e669d57046b-200x200-1.jpg","attrs":{"Brand Name":"ZMSH","Model Number":"Semi-Insulating SiC","Minimum Order Quantity":"5","Delivery Time":"2-4 weeks","Place of Origin":"China","Payment Terms":"T\/T","Polytype":"4H 6H","Resistivity (RT) Surface Roughness":">1E5 \u03a9.cm","Surface Roughness":"0.5 nm (Si-face CMP Epi-ready)","FWHM":"A<30 arcsec","TTV":"\uff1c25um","BOW":"\uff1c25um","warp":"\uff1c25um","Primary flat orientation":"<11-20>+5.0\u00b0","Surface Finish":"Single or double face polished","Usable area":"\u2265 90 %"}}