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Photomultiplier Cathode-Ray Tube from Japan

Photomultiplier CRTs are photocathode tubes functioning as television camera tubes in low-light scientific and military imaging systems. They amplify photon signals via electron multiplication. HTS 8540.20.20 includes these as image intensifiers and other photocathode tubes for cameras.

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

Obtain end-user statements specifying imaging vs scintillation counter use

Test for radiation tolerance if high-energy physics applications suspected

Include gain specifications (10^4-10^7) to confirm photocathode multiplication function