
( Brand: Sylvania ), ( Manufacturer Part Number: CV1861 ), ( Model: 5Z3 KX5Z3 5Z3G VT-145 NU-5Z3 CV1861 ), ( Type: Vacuum Tube ), ( Country/region Of Manufacture: United States )
The Pennsylvania CV1861 5Z3 Filament Bottom Foil Getter Tube is a crucial component in vacuum tubes, specifically in triodes and tetrodes. This getter tube is specifically designed for 5Z3 type vacuum tubes, which are commonly used in high-frequency applications such as radio frequency amplifiers and oscillators.
The getter tube itself is made of high-quality materials, specifically Pennsilvania's proprietary CV1861 alloy. This alloy is known for its excellent ability to absorb and neutralize gases, such as oxygen and nitrogen, which can contaminate the vacuum inside the tube and degrade its performance. The getter tube is coated with a thin layer of foil, made of aluminum or another suitable metal, which is designed to increase the surface area of the getter and improve its efficiency.
The filament bottom design of this getter tube allows for easy integration into the base of the vacuum tube, where the filament is typically located. The filament is a heated wire that emits electrons, which are then accelerated by a high voltage to create an electrical current. The close proximity of the filament to the getter tube allows for efficient gas absorption, as the gases are drawn towards the hot filament.
The Pennsylvania CV1861 5Z3 Filament Bottom Foil Getter Tube is a reliable and high-performing component that can significantly improve the lifespan and performance of vacuum tubes. It is a must-have for any electronics enthusiast, audio engineer, or amateur radio operator who uses vacuum tubes in their projects.
Pros of buying a Palyan PA-1861 5Z3 Filament Bottom Foil Getter Tube:1. Improved Vacuum Performance: The getter tube helps in maintaining a high vacuum level, which is essential for achieving better performance in vacuum tubes.
2. Longer Tube Life: The foil getter tube has a longer lifespan compared to the glass getter tubes, reducing the need for frequent replacements.
3. Enhanced Emission: The foil getter tube helps in reducing the gas emission, which improves the overall performance of the vacuum tube.
Cons of buying a Palyan PA-1861 5Z3 Filament Bottom Foil Getter Tube:1. Expensive: The foil getter tubes are generally more expensive than the glass getter tubes.
2. Requires Special Handling: The foil getter tubes are delicate and require special handling to avoid damage during installation.
3. Limited Availability: Foil getter tubes are not as widely available as glass getter tubes, making it harder to find replacements if needed.
Conclusion:If you're looking for improved vacuum performance and a longer tube life, the Palyan PA-1861 5Z3 Filament Bottom Foil Getter Tube is a good investment. However, the high cost and special handling requirements should be considered before making a purchase. If you're on a tight budget or have limited access to replacement parts, you may want to consider a glass getter tube instead.
Recommendation:If you're looking for a high-performance getter tube and are willing to pay a premium, then the Palyan PA-1861 5Z3 Filament Bottom Foil Getter Tube is a good choice. However, if you're looking for a more cost-effective option, you may want to consider a glass getter tube instead. It's always a good idea to compare prices and features from multiple vendors to ensure you're getting the best value for your money.
Tested 95% emissions on a encore TC142 tube tester.