HTS 8540Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes); parts thereof

Product or HTS code

Rate lines38

Code	Description	General	Special	Column 2	Units
	Cathode-ray television picture tubes, including video monitor cathode-ray tubes
8540.11	8540.11Color
8540.11.10	8540.11.10Non-high definition, non-projection, having a video display diagonal exceeding 35.56 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60%	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%
	Having a video display diagonalGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60%	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%
8540.11.10.30	8540.11.10.30Not exceeding 39 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
8540.11.10.40	8540.11.10.40Exceeding 39 cm but not exceeding 45 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
8540.11.10.50	8540.11.10.50Exceeding 45 cm but not exceeding 50 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
8540.11.10.55	8540.11.10.55Exceeding 50 cm but not exceeding 63 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
8540.11.10.85	8540.11.10.85Exceeding 63 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
	Non-high definition, non-projection, having a video display diagonal not exceeding 35.56 cm
8540.11.24.01	8540.11.24.01Having a video display diagonal not exceeding 34.29 cmGeneral 7.5% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	7.5%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.11.28.01	8540.11.28.01OtherGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.11.30.00	8540.11.30.00High definition, having a video display diagonal exceeding 35.56 cmGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
	High definition, having a video display diagonal not exceeding 35.56 cm
8540.11.44.01	8540.11.44.01Having a video display diagonal not exceeding 34.29 cmGeneral 7.5% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	7.5%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.11.48.01	8540.11.48.01OtherGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.11.50.00	8540.11.50.00OtherGeneral 15% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	15%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
8540.12	8540.12Monochrome
	Television picture tubes having a straight line dimension across the faceplate greater than 29 cm but having no straight line dimension across the faceplate that exceeds 42 cm
8540.12.10.00	8540.12.10.00Non-high definitionGeneral 3.6% · Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	3.6%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
8540.12.20.00	8540.12.20.00High definitionGeneral 3.6% · Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 60% · No.	3.6%	Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	60%	No.
	Other
8540.12.50	8540.12.50Non-high definitionGeneral 3.3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60%	3.3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%
8540.12.50.40	8540.12.50.40ProjectionGeneral 3.3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	3.3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.12.50.80	8540.12.50.80OtherGeneral 3.3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	3.3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.12.70.00	8540.12.70.00High definitionGeneral 3.3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 60% · No.	3.3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	60%	No.
8540.20	8540.20Television camera tubes; image converters and intensifiers; other photocathode tubes
8540.20.20	8540.20.20Cathode-ray tubesGeneral 6% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35%	6%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%
8540.20.20.40	8540.20.20.40ColorGeneral 6% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	6%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.20.20.80	8540.20.20.80OtherGeneral 6% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	6%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.20.40.00	8540.20.40.00OtherGeneral 3.3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.40.10	8540.40.10Data/graphic display tubes, monochrome; data/graphic display tubes, color, with a phosphor dot screen pitch smaller than 0.4 mmGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35%	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%
8540.40.10.10	8540.40.10.10ColorGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.40.10.50	8540.40.10.50OtherGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.60.00	8540.60.00Other cathode-ray tubesGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35%	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG)	35%
	Having a video display diagonalGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35%	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG)	35%
8540.60.00.20	8540.60.00.20Not exceeding 30 cmGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8540.60.00.65	8540.60.00.65Exceeding 30 cm but not exceeding 36 cmGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8540.60.00.80	8540.60.00.80Exceeding 36 cmGeneral 3% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
	Microwave tubes (for example, magnetrons, klystrons, traveling wave tubes, carcinotrons), excluding grid-controlled tubes
8540.71	8540.71Magnetrons
8540.71.20.00	8540.71.20.00Modified for use as parts of microwave ovensGeneral Free · Column 2 35% · No.	Free		35%	No.
8540.71.40.00	8540.71.40.00OtherGeneral 3.7% · Special Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.7%	Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.79	8540.79Other
8540.79.10.00	8540.79.10.00KlystronsGeneral 3.3% · Special Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.3%	Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.79.20.00	8540.79.20.00OtherGeneral 3.7% · Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.7%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
	Other tubes
8540.81.00.00	8540.81.00.00Receiver or amplifier tubesGeneral 4.2% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · No.	4.2%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	No.
8540.89.00	8540.89.00OtherGeneral 3.7% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35%	3.7%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%
8540.89.00.20	8540.89.00.20Gas and vapor electron tubesGeneral 3.7% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.7%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8540.89.00.40	8540.89.00.40Diodes, triodes and tetrodesGeneral 3.7% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.7%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8540.89.00.60	8540.89.00.60Light-sensing tubesGeneral 3.7% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.7%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8540.89.00.80	8540.89.00.80OtherGeneral 3.7% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	3.7%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
	Parts
8540.91	8540.91Of cathode-ray tubes
8540.91.15.00	8540.91.15.00Front panel assembliesGeneral 5.4% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · No.	5.4%	Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	No.
8540.91.20.00	8540.91.20.00Deflection coilsGeneral Free · Column 2 35% · No.	Free		35%	No.
8540.91.50.00	8540.91.50.00OtherGeneral 5.4% · Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) · Column 2 35% · kg	5.4%	Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG)	35%	kg
8540.99	8540.99Other
8540.99.40.00	8540.99.40.00Electron guns; radio frequency (RF) interaction structures for microwave tubes of subheadings 8540.71 through 8540.79, inclusiveGeneral Free · Column 2 35% · No.	Free		35%	No.
8540.99.80.00	8540.99.80.00OtherGeneral Free · Column 2 35% · No.	Free		35%	No.

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Germany24.34% of imports	Japan22.64% of imports	United Kingdom21.76% of imports	China8.14% of imports	France6.04% of imports	Czechia4.12% of imports	Austria3.01% of imports	Russia2.18% of imports	Slovakia1.73% of imports	Thailand1.62% of imports
8540.11.10.30Not exceeding 39 cm	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.10.40Exceeding 39 cm but not exceeding 45 cm	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.10.50Exceeding 45 cm but not exceeding 50 cm	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.10.55Exceeding 50 cm but not exceeding 63 cm	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.10.85Exceeding 63 cm	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.24.01Having a video display diagonal not exceeding 34.29 cm	10%9903.05.39	12.5%9903.05.49	17.5%9903.05.81	45%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	20%9903.05.77
8540.11.28.01Other	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.30.00High definition, having a video display diagonal exceeding 35.56 cm	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.44.01Having a video display diagonal not exceeding 34.29 cm	10%9903.05.39	12.5%9903.05.49	17.5%9903.05.81	45%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	20%9903.05.77
8540.11.48.01Other	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.11.50.00Other	15%	15%	25%9903.05.81	52.5%9903.05.319903.88.03	15%	15%	15%	72.5%9903.05.66	15%	27.5%9903.05.77
8540.12.10.00Non-high definition	10%9903.05.39	12.5%9903.05.49	13.6%9903.05.81	41.1%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	16.1%9903.05.77
8540.12.20.00High definition	10%9903.05.39	12.5%9903.05.49	13.6%9903.05.81	41.1%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	16.1%9903.05.77
8540.12.50.40Projection	10%9903.05.39	12.5%9903.05.49	13.3%9903.05.81	40.8%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	15.8%9903.05.77
8540.12.50.80Other	10%9903.05.39	12.5%9903.05.49	13.3%9903.05.81	40.8%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	15.8%9903.05.77
8540.12.70.00High definition	10%9903.05.39	12.5%9903.05.49	13.3%9903.05.81	40.8%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	72.5%9903.05.66	10%9903.05.39	15.8%9903.05.77
8540.20.20.40Color	10%9903.05.39	12.5%9903.05.49	16%9903.05.81	43.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	18.5%9903.05.77
8540.20.20.80Other	10%9903.05.39	12.5%9903.05.49	16%9903.05.81	43.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	18.5%9903.05.77
8540.20.40.00Other	10%9903.05.39	12.5%9903.05.49	13.3%9903.05.81	40.8%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.8%9903.05.77
8540.40.10.10Color	10%9903.05.39	12.5%9903.05.49	13%9903.05.81	40.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.5%9903.05.77
8540.40.10.50Other	10%9903.05.39	12.5%9903.05.49	13%9903.05.81	40.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.5%9903.05.77
8540.60.00.20Not exceeding 30 cm	10%9903.05.39	12.5%9903.05.49	13%9903.05.81	40.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.5%9903.05.77
8540.60.00.65Exceeding 30 cm but not exceeding 36 cm	10%9903.05.39	12.5%9903.05.49	13%9903.05.81	40.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.5%9903.05.77
8540.60.00.80Exceeding 36 cm	10%9903.05.39	12.5%9903.05.49	13%9903.05.81	40.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.5%9903.05.77
8540.71.20.00Modified for use as parts of microwave ovens	10%9903.05.39	12.5%9903.05.49	10%9903.05.81	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	12.5%9903.05.77
8540.71.40.00Other	10%9903.05.39	12.5%9903.05.49	13.7%9903.05.81	41.2%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.2%9903.05.77
8540.79.10.00Klystrons	10%9903.05.39	12.5%9903.05.49	13.3%9903.05.81	40.8%9903.05.319903.88.01	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	15.8%9903.05.77
8540.79.20.00Other	10%9903.05.39	12.5%9903.05.49	13.7%9903.05.81	41.2%9903.05.319903.88.01	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.2%9903.05.77
8540.81.00.00Receiver or amplifier tubes	10%9903.05.39	12.5%9903.05.49	14.2%9903.05.81	41.7%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.7%9903.05.77
8540.89.00.20Gas and vapor electron tubes	10%9903.05.39	12.5%9903.05.49	13.7%9903.05.81	41.2%9903.05.319903.88.01	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.2%9903.05.77
8540.89.00.40Diodes, triodes and tetrodes	10%9903.05.39	12.5%9903.05.49	13.7%9903.05.81	41.2%9903.05.319903.88.01	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.2%9903.05.77
8540.89.00.60Light-sensing tubes	10%9903.05.39	12.5%9903.05.49	13.7%9903.05.81	41.2%9903.05.319903.88.01	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.2%9903.05.77
8540.89.00.80Other	10%9903.05.39	12.5%9903.05.49	13.7%9903.05.81	41.2%9903.05.319903.88.01	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	16.2%9903.05.77
8540.91.15.00Front panel assemblies	10%9903.05.39	12.5%9903.05.49	15.4%9903.05.81	42.9%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	17.9%9903.05.77
8540.91.20.00Deflection coils	10%9903.05.39	12.5%9903.05.49	10%9903.05.81	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	12.5%9903.05.77
8540.91.50.00Other	10%9903.05.39	12.5%9903.05.49	15.4%9903.05.81	42.9%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	17.9%9903.05.77
8540.99.40.00Electron guns; radio frequency (RF) interaction structures for microwave tubes of subheadings 8540.71 through 8540.79, inclusive	10%9903.05.39	12.5%9903.05.49	10%9903.05.81	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	12.5%9903.05.77
8540.99.80.00Other	10%9903.05.39	12.5%9903.05.49	10%9903.05.81	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.39	10%9903.05.39	47.5%9903.05.66	10%9903.05.39	12.5%9903.05.77

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).