Tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes

HS v2017 Code: 854079

About tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes

hs code 854079 covers a range of specialized electronic tubes, known as microwave tubes, which play a crucial role in various industries and applications. These tubes are essential components in radar systems, satellite communications, particle accelerators, and other high-frequency electronic devices. The microwave tube industry is a vital part of the broader electronics and telecommunications sectors, contributing to technological advancements and enabling critical infrastructure and communication systems worldwide.

Production process

The production of microwave tubes involves a complex manufacturing process that requires specialized equipment and expertise. Key steps include the fabrication of the vacuum envelope, the assembly of the internal components (such as the cathode, grid, and anode), and the precise alignment of these elements. Vacuum sealing, high-temperature processing, and rigorous quality control measures are essential to ensure the proper functioning and reliability of these specialized tubes.

Production inputs

The production of microwave tubes relies on a range of specialized inputs, including high-purity metals, ceramics, and other specialized materials. Sophisticated manufacturing equipment, such as vacuum chambers, electron beam welding machines, and precision measurement tools, are also crucial for the industry. Additionally, the industry requires a highly skilled workforce with expertise in areas like vacuum technology, high-frequency electronics, and advanced manufacturing techniques.

Production outputs

Microwave tubes produced under hs code 854079 are primarily used in a variety of electronic and communication systems, including 851711 Radar apparatus, 851750 Apparatus for line telephony or line telegraphy, and 851780 Other apparatus for the transmission or reception of voice, images or other data. These tubes are essential components in the functioning of radar systems, satellite communications, and other high-frequency electronic devices that are vital for national defense, transportation, and global communication networks.

Revisions to 854079

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 854079. The most recent 1 version of this code (854079) is in the HS v2022 system:

This page shows a legacy version of code 854079 ( HS v2017).

Older versions

Family tree for tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes

    graph LR
    A["<a href='/classifications/hs/v2017/85'>85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers; television image and sound recorders and reproducers, parts and accessories of such articles</a>"]
A --> B["<a href='/classifications/hs/v2017/8540'>8540: Thermionic, cold cathode or photo-cathode valves and tubes (e.g. vacuum, vapour, gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray and television camera tubes)</a>"]
B --> C["<a href='/classifications/hs/v2017/854079'>854079: Tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes</a>"]

    B --> D["<a href='/classifications/hs/v2017/854011'>854011: Tubes; cathode-ray television picture tubes, including video monitor cathode-ray tubes, colour</a>"]
B --> E["<a href='/classifications/hs/v2017/854012'>854012: Tubes; cathode-ray television picture tubes, including video monitor cathode-ray tubes, monochrome</a>"]
B --> F["<a href='/classifications/hs/v2017/854020'>854020: Tubes; television camera tubes, image converters and intensifiers, other photo-cathode tubes</a>"]
B --> G["<a href='/classifications/hs/v2017/854040'>854040: Tubes; data/graphic display tubes, monochrome; data/graphic display tubes, colour, with a phosphor dot screen pitch smaller than 0.4mm</a>"]
B --> H["<a href='/classifications/hs/v2017/854060'>854060: Tubes; cathode ray, n.e.c. in heading no. 8540</a>"]
B --> I["<a href='/classifications/hs/v2017/854071'>854071: Tubes; microwave, magnetrons, excluding grid-controlled tubes</a>"]
B --> J["<a href='/classifications/hs/v2017/854081'>854081: Valves and tubes; receiver or amplifier</a>"]
B --> K["<a href='/classifications/hs/v2017/854089'>854089: Valves and tubes; n.e.c. in heading no. 8540</a>"]
B --> L["<a href='/classifications/hs/v2017/854091'>854091: Tubes; parts of cathode-ray tubes</a>"]
B --> M["<a href='/classifications/hs/v2017/854099'>854099: Valves and tubes; parts of the valves and tubes of heading no. 8540, excluding parts of cathode-ray tubes</a>"]

    

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    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



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class C level6
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class F level6
class G level6
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class I level6
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class K level6
class L level6
class M level6

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