If you have read the previous two articles that introduced closed and open micro-focus X-ray tubes, you may already know the fundamental difference between them: whether the tube can be opened to replace the filament.
Below, we use a comparison table to understand the difference between them:
|Lifetime||>10000h||500-1000h each filament|
|Vacuum system||Keep vacuum seal||Vacuumize before use|
|Consumables||None||Filament, seal ring|
In general, the performance and parameters of the open microfocus X-ray tube surpass the closed type in all aspects, so it also pays the corresponding price: several times the price, longer pre-heating time, shorter Filament lifetime and higher maintenance costs.