| 8539.29.20 | 00 | Lamps having glass envelopes not over 6.35 mm in maximum diameter and suitable for use in cystoscopes and other surgical instruments | No. | 5.2% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 55% |
| 8539.31.00 | 40 | 1.2 m, straight tube, of a power 30 W or more but not exceeding 40 W | No. | | | |
| 8540.12.10 | | 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: | | | | |
| 8540.71 | | Microwave tubes (for example, magnetrons, klystrons, traveling wave tubes, carcinotrons), excluding grid-controlled tubes: | | | | |
| 8540.72.00 | 00 | Klystrons | No. | 3.3% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX,P, SG) | 35% |
| 8540.99.40 | 00 | Electron guns; radio frequency (RF) interaction structures for microwave tubes of subheadings 8540.71 through 8540.79, inclusive | X | Free | | 35% |
| 8541 | | Diodes, transistors and similar semiconductor devices; photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes; mounted piezoelectric crystals; parts thereof: | | | | |
| 8541.21.00 | | Transistors, other than photosensitive transistors: | | | | |
| 8541.30.00 | | Thyristors, diacs and triacs, other than photosensitive devices | | Free | | 35% |
| 8541.40.70 | | Transistors | | Free | | 35% |
| 8541.60.00 | | Mounted piezoelectric crystals | | Free | | 35% |
| 8542.32.00 | 40 | Static read-write random access (SRAM) | No. | | | |
| 8543.70.40 | 00 | Electric synchros and transducers; flight data recorders; defrosters and demisters with electric resistors for aircraft | X | 2.6% | Free (A,AU,BH,C, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8543.70.60 | 00 | Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks | X | 2.6% | Free (A,AU,B,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8543.70.85 | 00 | For electrical nerve stimulation | No. | Free | | 35% |
| 8543.70.96 | 20 | Special effects pedals for use with musical instruments | No. | | | |
| 8543.90.15 | 00 | Assemblies and subassemblies for flight data recorders, consisting of two or more parts or pieces fastened or joined together: | | | | |
| 8546.20.00 | 30 | Used in high-voltage, low-frequency electrical systems: | | | | |
| 8546.20.00 | 30 | Commonly known as suspension, pin-type or line post insulators | No. | | | |
| 8547.10.40 | 00 | Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, stationary, internal combustion engines | No. | 3% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 60% |
| 8547.20.00 | 00 | Insulating fittings of plastics | No. | Free | | 30% |
| 8548 | | Waste and scrap of primary cells, primary batteries and electric storage batteries; spent primary cells, spent primary batteries and spent electric storage batteries; electrical parts of machinery or apparatus, not specified or included elsewhere in this chapter: | | | | |
| 8548.10 | | Waste and scrap of primary cells, primary batteries and electric storage batteries; spent primary cells, spent primary batteries and spent electric storage batteries: | | | | |
| 8548.10.05 | | Spent primary cells, spent primary batteries and spent electric storage batteries: | | | | |
| 8548.10.05 | 40 | Lead-acid storage batteries, of a kind used for starting engines | No. kg | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
