Quantic Evans manufactures high-energy density capacitors for demanding mission-critical applications. We have the most power dense capacitor technology in the industry and are routinely specified for defense, aerospace, and energy exploration applications where high reliability and SWaP (space, weight, and power) savings are critical design considerations. 

When compared to traditional capacitor technologies, EVANSCAPS save weight, volume, and power to deliver key enabling solutions for applications including transmit pulse in radar (T/R modules), electric propulsion for space, targeting and range-finding and weapons systems, high power pulse microwave, electromagnetic pulse applications, Peta-watt lasers for fusion energy, LIDAR, amplifier, power hold up/bridge power, electronic warfare, directed energy weapons and systems, oil & gas downhole wireline, drilling, MWD and completion services, and many more.


Search Quantic Evans' Hybrid Wet Tantalum Capacitors

Our industry-leading power density is the result of our patented proprietary hybrid wet tantalum technology, which combines a traditional Tantalum Pentoxide anode with a Ruthenium Oxide cathode to create capacitors that excel in the most demanding defense, aerospace, and energy applications. 

  • Voltage Range: 10V to 125V
  • Capacitance Range: 22μF to 1F
  • Construction: Hermetically sealed for harsh environment protection
  • ESR Performance: Ultra-low ESR enables high-current applications
  • Reliability: Long service life with unlimited shelf life
  • Temperature Range: Operates from -55°C to 200°C
  • Certification: Space-grade versions qualified to NASA EEE-INST-002


The Quantic Capacitor Portfolio

Quantic Evans is part of Quantic Electronics' Capacitor Portfolio offering a broad array of capacitor technologies. In addition to Quantic Evans hybrid wet tantalum capacitor, our portfolio includes Quantic Paktron's multilayer polymer (MLP) film capacitors, Quantic UTC's multilayer ceramic capacitors (MLCCs) and assemblies, and Quantic Eulex' ceramic high-frequency microwave capacitors. All of our capacitors deliver mission-critical performance in defense, aerospace, energy and communications, where high-reliability, space, weight and power are crucial.

Download our Capacitor Portfolio Overview



Available Form Factors

Square Radial

Maximum power density in a compact footprint, ideal for space-constrained applications

 Learn More
round radial capacitors

Round Radial

Traditional form factor with enhanced performance characteristics

 Learn More
axial capacitors

Axial

Optimized for specific mounting requirements and legacy system compatibility

Learn More

Capattery capacitors

Capattery

Hybrid capacitor-battery technology for specialized energy storage applications

 Learn More
capacitor bank assemblies

Capacitor Bank Assemblies

Custom-engineered solutions for applications requiring higher voltages

 Learn More

And more

Browse our complete catalogue of the industry's most power dense capacitors

All Product Catalogue

Capacitor Applications

Quantic Evans capacitors power the most demanding mission-critical applications where reliability, performance, and SWaP optimization are essential. Our advanced capacitor technology delivers exceptional results across diverse operating environments and specialized application.

C-UAS Drone Defense Weapons Systems

Our SWaP-optimized capacitors are ideal for C-UAS applications with ultra-low ESR that minimizes droop during transmit pulses. Their compact size enables placement near active elements, reducing losses while supporting the rapid-response requirements critical for effective drone defense. 

Read more

Directed Energy

We've purpose-built our capacitors for directed energy applications requiring large power storage with rapid dispersal. They enable high-power microwave, electromagnetic pulse, and laser targeting systems where precision and reliability are essential for mission success in defense applications. 

Read more

Electric Propulsion for Space

 We design space-grade capacitors for thruster systems with hermetically sealed, RAD-hard construction. They provide significant SWaP savings compared to traditional technologies, making them ideal for ion thrusters, vacuum arc thrusters, and pulsed plasma propulsion in spacecraft. 

Read more

 

Missile Defense Systems

 We engineer hybrid wet tantalum capacitors specifically for detonation and firing modules in missile systems. These capacitors support voltages from 10V-125V and withstand altitudes exceeding 100,000 feet, providing reliable performance for PAC-3, GEM-T, and Tomahawk platforms. 

Read more

 

Oil & Gas Downhole Wireline, Drilling, MWD and Completion Services 

Our HyCap-HT capacitors operate reliably in downhole temperatures up to 200°C. They are engineered for extreme shock and vibration resistance, delivering consistent performance for wireline, drilling, and MWD applications where reliability in harsh environments is critical. 

Read more

 

Power Hold-Up MIL-STD-704/DO-160

 Quantic Evans capacitors meet MIL-STD-704/DO-160 requirements to ensure uninterrupted power during brief interruptions. They deliver reliable performance across wide temperature ranges, protecting critical avionics and flight control systems in military and commercial aircraft. 

Read more

 

Space Applications

 Our capacitors are NASA EEE-INST-002 qualified and ESA-approved for deployment on numerous satellites and spacecraft. They support RADAR/LIDAR, propulsion, and electronic systems where mission-critical reliability is essential in environments where repair is impossible. 

Read more

Transmit Pulse In Radar (T/R Modules)

 We develop low-ESR capacitors optimized for transmit pulse radar applications. They handle high currents with minimal voltage droop, improving performance in L-band, S-band, X-band, naval, ground-based, and UAV radar systems that require reliable, consistent pulse delivery. 

Read more

Mars Organic Molecule Analyzer

PROJECT PROFILE

NASA's Mars Organic Molecule Analyzer

MISSION-CRITICAL, SPACE-GRADE, NASA-QUALIFIED CAPACITORS

The Mars Organic Molecule Analyzer (MOMA) represents the pinnacle of extraterrestrial analytical instrumentation: an unprecedented mass spectrometry system engineered for exobiological investigation. Quantic Evans' high-density capacitors function as the critical power reservoir for the precision sampling mechanism, delivering meticulously calibrated energy pulses that activate the solenoid actuator with nanometer-level precision in an environment where component failure is not an option and operational parameters exceed terrestrial extremes. 

Key capacitor requirements:

  • Radiation hardened construction

  • Extreme temperature tolerance

  • Ultra-reliable performance where repair is impossible

  • Minimal size and weight to meet strict mission parameters


48+ hours

of testing per capacitor


 

Quality Assurance

ISO 9001 & AS9100

Certified Excellence

Every EVANSCAP undergoes 48+ hours of rigorous testing to ensure mission-critical reliability. Our capacitors are routinely screened and qualified to NASA INST-002 standards in addition to application-specific requirements.

We maintain strict compliance with:

  • RoHS and REACH environmental standards
  • Conflict Minerals reporting (CMRT 6.4)
  • Counterfeit materials prevention protocols
Learn more

Industries Served

Defense & Aerospace

Space Exploration

Energy

Oil & Gas

Mars Organic Molecule Analyzer

PROJECT PROFILE

Railway Obstacle Detection & Warning System

ENHANCING RAILWAY SAFETY WORLDWIDE

Pioneering rail safety systems utilizing advanced ground-based radar are mitigating the global challenge of railway accidents. Quantic Evans' ultra-low ESR capacitors drive precision detection arrays that identify potential collision risks at distances up to 1 kilometer, while delivering exceptional power stability and transient response performance critical for autonomous alert functionality with millisecond response times — essential where operational reliability directly correlates to effective risk mitigation.

Technical advantages:

  • Superior signal-to-noise ratio enabling extended detection range

  • Environmental resilience across extreme operational conditions

  • Optimized power discharge characteristics for instantaneous system response

  • Field-proven reliability with minimal intervention requirements

Proud Member of the Quantic™ Electronics Family 

Quantic™ Electronics, an electronic component company, is a trusted partner in military, aerospace, industrial, and commercial markets with over a century of combined experience as a reliable problem-solver. Being a part of Quantic’s portfolio has allowed Quantic Evans to continue developing cutting edge capacitor technology, alongside other world-class technology companies that represent the future of mission-critical electronics. Watch the Quantic overview video to learn more about us and all our sister companies.