EIMAC T8-698 Electron Tube Valve 4-400A

( Brand: Eimac ), ( Manufacturer Part Number: T8-698 ), ( Part Type: Tube Valve ), ( Unit Type: Unit ), ( Country/region Of Manufacture: United States )

Review EIMAC Electron Tube Valve

The EIMAC T8-698 is a 4-400A high power tetrode vacuum tube, specifically designed for use in industrial and military applications. This tube is part of EIMAC's T8 series, which is known for its exceptional performance and durability.

The EIMAC T8-698 is a large-format tube, with a glass envelope measuring 11.2 inches long and 4.5 inches in diameter. It is designed to operate at a plate voltage of 1000V and a plate current of up to 4400A, making it suitable for applications that require high power output.

The tube is designed with a high-quality filament system, which provides reliable ignition and heating of the cathode. The filament is made of a low-melting-point material, which allows for quick warm-up time and reduces the risk of thermal shock.

The EIMAC T8-698 is made with high-purity materials and undergoes rigorous testing to ensure consistent performance and reliability. The tube is also designed for long life, with a robust construction that can withstand the demands of high-power applications.

The tube's high power handling capability makes it ideal for use in a variety of industrial and military applications, including welding equipment, power amplifiers, and radio transmitters. It is also suitable for use in high-voltage ignition systems and X-ray generators.

The EIMAC T8-698 is designed to meet the highest standards of quality and performance. It is manufactured in accordance with MIL-PRF-2718C specification and is RoHS compliant. It is also available with a range of base options, including stud base and flange base, to accommodate different mounting requirements.

In summary, the EIMAC T8-698 is a high-power tetrode vacuum tube designed for industrial and military applications. It offers exceptional performance, reliability, and durability, making it an ideal choice for applications that demand high power output and consistent performance. Its robust construction, long life, and compatibility with a range of base options make it a versatile and valuable addition to any industrial or military electronics system.

Pros and Cons of buying a EIMAC T8-698 4-400A Electron Tube Valve

The EIMAC T8-698 4-400A electron tube valve is a popular choice for various applications, especially in high voltage and high current circuits. Here are some potential advantages and disadvantages of purchasing this specific tube:

1. High Power Handling: The EIMAC T8-698 can handle a large amount of power, making it suitable for applications requiring high power output.

2. Long Life Span: Electron tubes, in general, have a longer life span compared to their solid-state counterparts, making them a reliable choice for long-term applications.

3. High Voltage Capability: This tube can operate at high voltages, making it suitable for applications where high voltage is required.

4. Precise Control: Tubes like the EIMAC T8-698 offer more precise control compared to solid-state devices, which can be beneficial in certain applications.

1. Size and Weight: Electron tubes are generally larger and heavier than solid-state components, which can be a disadvantage in applications where size and weight are critical factors.

2. Fragility: Tubes are more fragile than solid-state components and can be easily damaged if mishandled or if the voltage or current is applied incorrectly.

3. Maintenance: Tubes require more maintenance than solid-state components, including regular alignment, heating, and replacement of filaments.

4. Cost: Tubes tend to be more expensive than solid-state components, especially when considering the added costs of maintenance and replacement.

The EIMAC T8-698 4-400A electron tube valve offers several advantages, including high power handling, long life span, high voltage capability, and precise control. However, it also comes with disadvantages such as size and weight, fragility, maintenance requirements, and cost. Ultimately, the decision to purchase this tube depends on the specific application requirements and the trade-offs that are acceptable for the project.

If your application requires high power handling, high voltage, precise control, and a long-term solution, the EIMAC T8-698 4-400A electron tube valve may be a suitable choice. However, if size, weight, cost, and ease of maintenance are more important factors, you may want to consider solid-state alternatives. It's essential to carefully evaluate the application requirements and consider the trade-offs before making a decision.

Details:

Everything you see in the pictures is what included this lot. Photos are the best. I am not an operator and don't have the knowledge to fully test myself. Please look at all pictures closely before purchasing.

I did purchase from a local operator. I do a lot of business with them and they always have well cared for gear. Items may need a more in depth cleaning. Not saying it won't need adjustments but, looks like a nice clean unit.

part #: t8698 prices

• $84.95-$265.00

specifications vintacapacitor:

• brand: Eimac
• mpn: T8-698
• part type: Tube Valve
• unit type: Unit
• country/region of manufacture: United States

general vintacapacitor:

• Vintage Audio Video > Vintage Parts Accessories > Vintage Capacitors
• condition: Used

shipping vintacapacitor:

• transit: 5-11 Days
• carrier: USPS
• service: USPS Ground Advantage
• class: Standard
• cost: $19.00
• type: Fixed

offer vintacapacitor:

• started: March 23, 2025
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0

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seller vintacapacitor:

• city: Federal Way, Washington
• rating: 99.4%
• # reviews: 6801

returns vintacapacitor:

• policy: No Returns

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