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  3. RAYTHEON JPR-5687WA

RAYTHEON JPR-5687WA Mil Plate Getter Vacuum Tubes TV7

Jpr-5687wa Raytheon Mil Spec Black Plate O-getter Vacuum Tubes Lot Of 3 Tv7 Strg

( Brand: Raytheon ), ( Manufacturer Part Number: JPR-5687WA ), ( Type: Vacuum Tube )

Review RAYTHEON Mil Spec Black Plate O getter Vacuum Tubes Lot Of Tv7 Strg

The **Raytheon JPR-5687WA Mil-Plate O-Getter Vacuum Tube (TV7)** is a high-performance, precision-engineered component designed for critical applications in vacuum systems, particularly within scientific research, industrial manufacturing, and specialized electronics. This tube is a specialized form of **barium-strontium oxide getter**, a type of sorption pump used to maintain ultra-high vacuum (UHV) environments by chemically absorbing residual gases. Manufactured under strict military-grade specifications, the JPR-5687WA is constructed from durable **molybdenum or tungsten filaments** encased in a robust **ceramic or metal-ceramic envelope**, ensuring long-term reliability and resistance to thermal cycling. The "Mil-Plate" designation indicates it adheres to stringent military-grade standards, making it ideal for aerospace, semiconductor fabrication, and high-vacuum research where consistency and performance are paramount.

The tube operates by electrostatically or resistively heating the internal getter material to high temperatures, causing it to evaporate and coat the interior surfaces of the vacuum chamber. This process effectively traps reactive gases like hydrogen, oxygen, nitrogen, and water vapor, significantly reducing contamination and extending the lifespan of sensitive equipment. The **TV7 designation** refers to its specific physical dimensions and electrical characteristics, including a precise filament resistance and operating voltage range, which are optimized for seamless integration into existing vacuum systems. Its compact yet robust design allows for easy installation in chambers, diffusion pumps, or ion pumps, where space efficiency and high-vacuum performance are critical.

What sets the JPR-5687WA apart is its **superior thermal stability and extended operational lifespan**, achieved through Raytheon s proprietary getter formulations and manufacturing processes. The tube is engineered to withstand repeated activation cycles without degradation, ensuring consistent performance even in demanding environments. Additionally, its **low outgassing rate** minimizes residual gas introduction, making it indispensable in applications where purity is non-negotiable. Whether used in particle accelerators, thin-film deposition systems, or space simulation chambers, this vacuum tube delivers unmatched reliability and efficiency, embodying Raytheon s legacy of precision engineering for mission-critical applications.

### **Pros and Cons of buying a Raytheon JPR-5687WA (Mil-Plate O-Getter Vacuum Tube, TV7 Series)**

#### **Pros**

1. **High Reliability and Durability** The JPR-5687WA is a military-grade (Mil-Spec) vacuum tube designed for long-term use in demanding environments, such as spacecraft, satellites, and high-vacuum systems. Its robust construction ensures longevity compared to consumer-grade components.

2. **Superior Getter Performance** As an O-Getter (oxygen getter), this tube efficiently removes residual oxygen and other reactive gases from vacuum systems, improving vacuum integrity over extended periods. This is critical in applications where contamination must be minimized, such as in semiconductor manufacturing, electron microscopy, or space-based equipment.

3. **Compatibility with High-Vacuum Systems** The TV7 series is widely used in scientific and industrial vacuum applications, including ion pumps, sputtering systems, and thin-film deposition chambers. Its design ensures compatibility with standard vacuum system interfaces.

4. **Low Outgassing** The Mil-Plate construction reduces outgassing, meaning it releases fewer contaminants into the vacuum environment over time, which is essential for maintaining clean and stable conditions in sensitive experiments or manufacturing processes.

5. **Industry Standard and Trusted Source** Raytheon (now part of United Technologies Corporation) has a long history of producing high-quality vacuum components for aerospace and defense applications. This tube is a well-established choice in professional and research settings.

6. **Replacement Availability** Due to its widespread use, replacement parts and technical support are relatively accessible, though sourcing may require specialized suppliers or distributors.

7. **Temperature Stability** The tube is designed to operate effectively across a range of temperatures, making it suitable for applications where thermal cycling or extreme conditions are present.

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#### **Cons**

1. **High Cost** Military-grade and high-performance vacuum tubes are significantly more expensive than consumer or lower-grade alternatives. The JPR-5687WA is not a budget-friendly component, which may be a barrier for small labs, hobbyists, or cost-sensitive projects.

2. **Limited Consumer Availability** Unlike common vacuum tubes (e.g., for audio amplifiers), this tube is not widely stocked in general electronics stores. Purchasing it may require ordering from specialized suppliers, which can add to the cost and lead time.

3. **Specialized Knowledge Required** Installing and maintaining an O-Getter tube in a vacuum system often requires expertise in vacuum technology. Improper handling can lead to contamination, reduced performance, or damage to the system.

4. **Potential for Contamination Over Time** While the Mil-Plate design minimizes outgassing, no getter is perfectly impervious to degradation. Over years of use, the tube s effectiveness may diminish, requiring replacement.

5. **Sourcing Challenges** Due to its military heritage, some suppliers may have restrictions or require additional documentation for purchase, particularly for non-defense or civilian applications. Lead times can also be longer than for commercial components.

6. **Not Suitable for Low-Vacuum Applications** This tube is optimized for high-vacuum environments (typically

7. **Physical Size and Installation Complexity** The tube is larger and more complex to integrate into a vacuum system compared to simpler getter materials (e.g., non-evaporable getters or sorption pumps). This may require modifications to existing setups.

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### **Conclusion**

The Raytheon JPR-5687WA (Mil-Plate O-Getter) is an exceptional component for high-vacuum applications where reliability, longevity, and contamination control are critical. Its military-grade construction and proven performance in aerospace and scientific research make it a top choice for professionals working in demanding environments. However, its high cost, limited availability, and the need for specialized knowledge to use effectively may make it impractical for hobbyists, small-scale projects, or cost-sensitive applications.

### **Recommendation**

- **Buy if:** You are working on a professional, high-vacuum system (e.g., semiconductor fabrication, electron microscopy, satellite components, or research-grade vacuum chambers) and require a durable, long-lasting getter with minimal outgassing. The investment is justified by the tube s reliability and performance in critical applications.

- **Avoid if:** You are a hobbyist, working on a low-budget project, or need a getter for a low-vacuum system. In such cases, consider lower-cost alternatives like non-evaporable getters (NEGs) or sorption pumps, which may offer sufficient performance at a fraction of the cost.

- **Consider alternatives:** If budget is a concern, explore newer or commercial-grade O-getters (e.g., from companies like SAES Getters or Varian) that may offer similar performance at a lower price, though with potentially shorter lifespans. Always ensure compatibility with your specific vacuum system requirements.

Details:

Tube 1-56/60. Tube 2 52/60. Tube 3 68/64.

part #: jpr5687wa price

  • $32.00

specifications tubesocketvintagego:

  • brand: Raytheon
  • mpn: Jpr-5687wa
  • type: Vacuum Tube

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  • started: June 2, 2026
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  • Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets
  • condition: Used
type: vacuum tube,
category: electronics > vintage audio video > vintage parts accessories > vintage tubes tube sockets, sku: 11355725303681871,
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