Alumina (Al₂O₃) Ceramic Wafers, 20 pcs/pack

Alumina (Al₂O₃) Ceramic Wafer Discs

Overview: High-performance polycrystalline aluminum oxide (Al₂O₃) ceramic wafer discs engineered for thermal management, electronic insulation, and laboratory research. Available in circular formats from Dia. 8 mm to Dia. 76.2 mm with multiple thickness options.

Key Specifications:
– Format: Circular (disc/wafer)
– Purity: ≥99.5% Al₂O₃
– Available Diameters: Dia. 8 mm – Dia. 76.2 mm (including standard 1″, 2″, 3″ wafer sizes)
– Thickness: 0.6 mm – 2.0 mm
– Surface: Ceramic (as-sintered or lapped finish)
– Color: White/ivory
– Pack Size: 20 pcs/pack

Material Properties:
– Dielectric constant: ~9.8 (1 MHz)
– Thermal conductivity: ~24–30 W/(m·K)
– Maximum service temperature: >1,600°C
– Vickers hardness: ~1,400 HV
– Chemical resistance: Excellent

Applications:
– Circular electronic substrate for disc-form factor electronics
– Heat dissipation disc in LED and power module packaging
– Insulating disc for capacitor and sensor assemblies
– Circular electrode support in electrochemical cells
– Substrate for circular thin-film deposition masks
– Sample holders in high-temperature furnace experiments

Notes:
– Polycrystalline ceramic — for precision single-crystal sapphire discs, see Al₂O₃-1-x products
– Custom diameters, thicknesses, and shapes available on request