Alumina Ceramic Feedthrough Insulator from Japan
Hermetically sealed 99.5% alumina ceramic feedthrough for high-vacuum systems, passing conductors while maintaining insulation. HTS 8546.20.00 for this ceramic electrical insulator in RF/microwave applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Helium leak rate certification (<10^-9 atm cc/sec)
• RF power handling and VSWR specifications
• Distinguish from vacuum tube parts (8540.91)