| 8537 | | Boards, panels, consoles, desks, cabinets and other bases, equipped with two or more apparatus of heading 8535 or 8536, for electric control or the distribution of electricity, including those incorporating instruments or apparatus of chapter 90, and numerical control apparatus, other than switching apparatus of heading 8517: | | | | |
| 8537.10.60 | 00 | Motor control centers | No. | 2.7% | Free (A,AU,B,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 35% |
| 8537.10.90 | 30 | Numerical controls for controlling machine tools | No. | | | |
| 8537.10.90 | 60 | Programmable controllers | No. | | | |
| 8538.90.10 | 00 | Printed circuit assemblies: | | | | |
| 8538.90.80 | 40 | Metal contacts | X | | | |
| 8539 | | Electrical filament or discharge lamps, including sealed beam lamp units and ultraviolet or infrared lamps; arc lamps; parts thereof: | | | | |
| 8539.21 | | Other filament lamps, excluding ultraviolet or infrared lamps: | | | | |
| 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 | | Fluorescent, hot cathode | | 2.4% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 20% |
| 8540.20 | | Television camera tubes; image converters and intensifiers; other photocathode tubes: | | | | |
| 8540.71 | | Microwave tubes (for example, magnetrons, klystrons, traveling wave tubes, carcinotrons), excluding grid-controlled tubes: | | | | |
| 8540.91.15 | 00 | Front panel assemblies | X | 5.4% | Free (A+,AU,B,CA, CL,D,E,IL,J,JO, MX,P,SG) 3.7% (BH) 3.5% (MA) | 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: | | | | |
| 8541.10.00 | 40 | Unmounted chips, dice and wafers | No. | | | |
| 8541.10.00 | 70 | With a maximum current of 0.5 A or less | No. | | | |
| 8541.21.00 | 40 | Unmounted chips, dice and wafers | No. | | | |
| 8541.29.00 | 40 | Unmounted chips, dice and wafers | No. | | | |
| 8541.30.00 | 40 | Unmounted chips, dice and wafers | No. | | | |
| 8541.40 | | Photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes: | | | | |
| 8541.40.60 | 10 | Unmounted chips, dice and wafers | No. | | | |
| 8541.40.60 | 20 | Assembled into modules or made up into panels | No. | | | |
| 8541.40.70 | 40 | Unmounted chips, dice and wafers | No. | | | |
| 8541.50.00 | 40 | Unmounted chips, dice and wafers | No. | | | |
