JENNINGS UCSX-1000-15S Itt Vacuum Capacitor Peak

( Brand: Jennings ), ( Manufacturer Part Number: UCSX-1000-15S ), ( Model: JENNINGS UCSX-1000-15S ), ( Type: Vacuum Capacitor ), ( Unit Type: Unit ), ( Country Of Origin: United States )

Review JENNINGS Itt Variable Vacuum Capacitor 1000 Pf Kv Peak

The **Jennings UCSX-1000-15S ITT Vacuum Capacitor (1000 pF, 15 kV Peak)** is a high-performance, precision-engineered component designed for demanding applications in high-voltage pulse systems, radar technology, and specialized RF environments where reliability and longevity are paramount. This vacuum capacitor represents the pinnacle of Jennings legacy in manufacturing robust, long-lasting capacitors tailored for extreme electrical conditions. Constructed with a hermetically sealed glass envelope, the unit ensures an inert, oxygen-free environment that eliminates the risk of dielectric breakdown or degradation over time, making it ideal for applications where conventional oil-filled or solid-dielectric capacitors would fail under sustained high-voltage stress. The vacuum-sealed design not only enhances thermal stability but also minimizes parasitic losses, delivering exceptional efficiency in pulse discharge and energy storage applications. With a capacitance of **1000 picofarads (pF)**, this capacitor strikes a balance between compact form factor and substantial energy storage capability, making it suitable for high-frequency pulse modulation, voltage multiplication circuits, and high-power radar transmitters where precise timing and minimal phase distortion are critical. Its **15 kV peak voltage rating** ensures it can withstand transient surges and repetitive high-voltage pulses without compromising performance, making it a trusted choice in military, aerospace, and industrial radar systems where reliability under extreme conditions is non-negotiable. The ITT (now part of the Jennings brand) heritage guarantees meticulous manufacturing standards, with each unit subjected to rigorous testing for dielectric strength, insulation resistance, and thermal endurance. Whether integrated into a pulsed power supply, a high-voltage test setup, or a specialized RF amplifier, this vacuum capacitor delivers consistent, repeatable performance across a wide operational range, ensuring longevity and dependability in even the most demanding environments. For engineers and designers seeking a capacitor that combines durability, precision, and high-voltage resilience, the Jennings UCSX-1000-15S stands as a proven solution.

**Pros and Cons of buying a Jennings UCSX-1000-15S ITT Vacuum Capacitor (1000 pF, 15 kV Peak)**

1. **High Voltage Rating (15 kV Peak)** Suitable for high-voltage applications such as Tesla coils, spark gap transmitters, and other RF projects requiring robust insulation and voltage handling.

2. **Vacuum Construction** Vacuum capacitors are known for their reliability, low leakage current, and resistance to environmental factors like humidity and dust, which can degrade other capacitor types over time.

3. **Low Inductance** The design minimizes parasitic inductance, making it ideal for high-frequency applications where efficiency and performance are critical.

4. **Durability** Vacuum-sealed units are less prone to catastrophic failure (e.g., explosion or arcing) compared to oil-filled or electrolytic capacitors under high-voltage stress.

5. **Long Lifespan** With proper usage, vacuum capacitors can last decades without significant degradation, making them a cost-effective choice for long-term projects.

6. **Compatibility with RF Systems** The low loss and stable performance at high frequencies make it well-suited for RF amplifiers, transmitters, and resonant circuits.

7. **No Electrolyte or Polarization Issues** Unlike electrolytic capacitors, this unit does not require polarity and is not affected by temperature-induced electrolyte drying.

8. **Industrial-Grade Build** The ITT (now part of Harris Corporation) brand suggests a level of quality and testing that may be absent in cheaper, aftermarket alternatives.

1. **High Cost** Vacuum capacitors, especially those rated for high voltages, are significantly more expensive than standard ceramic or film capacitors. This may not be justified for low-voltage or low-power applications.

2. **Limited Availability** Finding replacements or compatible units can be difficult, as vacuum capacitors are niche components. Stock may be low, and lead times can be long.

3. **Fragility in Handling** Vacuum-sealed units can be damaged by physical shock or improper handling (e.g., dropping or mishandling terminals), which could compromise the vacuum seal.

4. **Soldering Challenges** The terminals may require careful soldering to avoid overheating, which could affect the vacuum integrity or performance.

5. **Size and Bulk** High-voltage vacuum capacitors are physically larger than their lower-voltage counterparts, which may limit their use in space-constrained projects.

6. **No Adjustability** Unlike variable capacitors, this is a fixed-value unit (1000 pF), so it cannot be tuned for different resonant frequencies.

7. **Potential for Leakage Over Time** While rare, prolonged exposure to extreme conditions (e.g., temperature fluctuations, vibration) could eventually degrade the vacuum seal, though this is uncommon with well-manufactured units.

8. **Specialized Knowledge Required** High-voltage applications demand understanding of safety protocols (e.g., proper grounding, insulation, and discharge procedures) to avoid hazards like arcing or shock.

The **Jennings UCSX-1000-15S** is an excellent choice for **high-voltage, high-reliability applications** such as RF transmitters, Tesla coils, or industrial RF systems where performance, longevity, and stability are prioritized over cost. Its vacuum construction ensures low loss, high durability, and resistance to environmental factors, making it a premium component for serious hobbyists or professionals. However, its **high price, limited availability, and specialized requirements** mean it is not suitable for casual electronics projects or low-voltage applications where cheaper alternatives (e.g., ceramic or film capacitors) would suffice.

- You are working on a **high-voltage RF project** (e.g., 10 kV Tesla coil, spark gap transmitter, or industrial RF amplifier).

- You need a **long-lasting, low-loss capacitor** that will not degrade over time.

- You have **proper handling and safety procedures** in place for high-voltage components.

- Budget is not a limiting factor, and you value **reliability over cost**.

- Your project operates at **low voltages** (e.g., under 5 kV), where standard capacitors would be sufficient.

- You are on a **tight budget**, as cheaper alternatives (e.g., high-voltage ceramic or polypropylene film capacitors) may meet your needs.

- You lack experience with **high-voltage electronics**, as improper handling could lead to damage or safety hazards.

- You need **adjustability or variable capacitance**, as this is a fixed-value unit.

For most **low-to-moderate voltage applications**, consider alternatives like **high-voltage ceramic capacitors (e.g., C0G or X7R types)** or **polypropylene film capacitors**, which offer better cost efficiency without sacrificing performance in many cases. However, if your project demands the **durability and performance of a vacuum capacitor**, the Jennings UCSX-1000-15S remains one of the best options available.

Details:

With its brand name reputation and quality construction, this capacitor is a sought-after piece for collectors enthusiasts of vintage electronics. The ITT Jennings UCSX-1000-15S Variable Vacuum Capacitor is a vintage electronic component made in the USA. From the collection of a lifetime radio collector. This unit has a peak voltage of 15 KV and capacitance 1000 pf, providing unique valuable addition to vintage audio video systems.

part #: ucsx100015s price

• $395.00

specifications tubesocketvintagego:

• brand: Jennings
• mpn: Ucsx-1000-15s
• model: Jennings Ucsx-1000-15s
• type: Vacuum Capacitor
• unit type: Unit
• country of origin: United States

returns tubesocketvintagego:

• policy: No Returns

general tubesocketvintagego:

• Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets
• condition: Used

seller tubesocketvintagego:

• rating: 98.4%
• city: Charles Town, West Virginia
• # reviews: 456

payments tubesocketvintagego:

• credit card: Mastercard
• other
• wallet: Paypal

offer tubesocketvintagego:

• sold: 0
• started: May 31, 2026
• best offers: True
• quantity: 1
• availability: In Stock
• options: Ship-to-home

shipping tubesocketvintagego:

• cost: $11.22
• class: Economy
• service: FedEx Ground Economy
• transit: 4-8 Days
• carrier: FedEx
• type: Calculated

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