Evans Capacitor – High Energy Density Caps

“Hermetically sealed Evans Hybrid Capacitor and Capattery devices have numerous patented features that provide demonstrated advantages over standard capacitor technologies.”

Evans Capacitor – High Energy Density Caps

“Evans maintains the highest levels of quality, and is fully compliant with ISO 9001 and AS9001 standards.” The unique chemistry and construction  provide 5 to 10 times the volumetric energy  density of aluminum electrolytic capacitors.

Evans Capacitor - High Energy Density Caps

Technical Papers of Evans Capacitor

The Littlest Big Capacitor – An Evans Hybrid – Presented at the Fifth International Seminar on Double Layer Capacitors and Similar Energy Storage Devices, December 4-6, 1995

Capattery – SuperCapacitor – Designed for longer duration power hold-up and memory back-up applications.  Full operating temperature range of -55C to 85C

High energy density, up to 3 joules per cc, High reliability, 25 yrs., >1,000,000 cycles

Hybrid capacitors provide very high power and energy from devices much smaller and lighter than electrically equivalent tantalum wet, tantalum chip, or aluminum electrolytic capacitors.

Typical applications replace standard military capacitors, or augment batteries and power supplies where size, weight, reliability and quality are important factors of component selection.

Evans Capacitor Company
72 Boyd Ave, East Providence RI 02914, USA.

Film Capacitors – Electronic Concepts

Manufactures both the standard product lines and custom needs. Film capacitor design and manufacture. Products include Polypropylene Hi-Energy Density DC Filter Capacitors and Medium Power Film High-Energy Density DC Filter Capacitor in place of Electrolytics in some Applications.

Film Capacitors – Electronic Concepts

Others are Metallized Polypropylene which are Superior to other AC Capacitors because of low loss dry film construction; Polystyrene and Metallized Polycarbonate Capacitors.

5MP2 Series Metallized Polypropylene

5MP2 Series Metallized Polypropylene

Switching power supply capacitors that require snubber and high current applications. Voltage: 400 to 2000VDC: Capacitance as high as l0.0µf; ESR as low as 0.005OHMS; ESL as low as 18nH; RMS current to 48.4amps; UL94-VO flame retardant; three configuratio

Electronic Concepts, Inc.
P.O. Box 1278, 526 Industrial Way W., Eatontown, New Jersey 07724 USA

TTI – Passive and Electromechanical Components

Electronic Components Distributor, provides premier passives and electromechanical parts including hard to find parts. TTI, Inc., a Berkshire Hathaway company, is a specialty distributor of passive, interconnect, electromechanical and discrete components.

TTI – Passive and Electromechanical Components

“TTI, Inc. is the world’s leading authorized distributor specialist offering passive, connector, electromechanical and discrete components.”

Sensor Technology Resource Center

Product line includes: resistors, capacitors, connectors, discretes, potentiometers, trimmers, magnetic and circuit protection components.

Sensor Technology Resource Center

The sensors TTI distributes meet the needs for optical, temperature, humidity, motion, position and a host of other variables. Across a wide range of sizes, shapes and power requirements,

TTI, Inc.
2441 Northeast Parkway, Fort Worth, TX 76106-1816, USA.

Thermally Protected Suppressors – Dean Technology

CKE is a line of high voltage and high power silicon rectifiers, MOVs, selenium suppressors, silicon carbide varistors, and assemblies. These products are appropriate for a wide range of applications, and find a special fit in the power generation, resistance welding and RF power systems markets.

Thermally Protected Suppressors – Dean Technology

 Thermally Protected Suppressors - Dean Technology

22 to 50 kA, 150 to 690 VAC, 25nS Maximum

Dean Technology inc.

Dean Technology, Inc. has a long and exceptional history providing world-class products, design, and solutions for high voltage and high power markets and applications.

Dean Technology, Inc.
P.O. Box 700968, Dallas, Texas 75370, USA.

TMOV34S Thermally Protected Varistor – Littelfuse

It consists of a 34mm square format varistor element ( MOV) with an integral thermally activated element designed to open in the event of overheating due to abnormal over-voltage, limited current conditions as outlined in UL1449.

TMOV34S Thermally Protected Varistor – Littelfuse

The device has a third lead, an indicator lead, which may be used to indicate that the MOV has been disconnected from the circuit.

TMOV34S Thermally Protected Varistor - Littelfuse

The integrated configuration also offers lower inductance than most discreet solutions resulting in improved clamping performance to fast over voltage transients.

from Littelfuse

EverCAP – Double Layer Capacitors – Nichicon

They have two types, High Power Density for a large current discharge. High Energy Density for a long backup time. Over a million Charge/Discharge cycles. High Efficiency. Capable of fully discharging to zero volts.

EverCAP – Double Layer Capacitors – Nichicon

EverCAP - Double Layer Capacitors - Nichicon

Some things to note for a design engineer. The EDLC or Electric Double Layer Capacitors …

  • Note Specified Endurance and end of life.
  • Excess Vibration can alter Specs, Damage.
  • Caution – Never Exceed Maximum temperature.
  • Specs are very dependent on Temperature.
  • Maintain Low ripple current on Charge/Discharge.
  • It is Polarized like a Electrolytic cap.
  • No Heating Parts or Heatsink near the Cap.

JC Series Evercap from Nichicon
This is a snap-in terminal type. Good voltage holding property. Suitable for quick charge and discharge.

  • Temperature range : -25°C to + 60°C
  • Capacitance : 15F to 150F
  • Voltage : 2.5V
  • Leakage Current – 0.5 mA

From – Nichicon

DLCAP – Electric Double Layer Capacitor – Nippon

They have a range of Supercapacitors upto 2500F at 2.5V and Modules like 400F at 15V. There are two types Prismatic and Cylindrical. In comparison to batteries, multi-million cycles of charge-discharge is possible.

DLCAP – Electric Double Layer Capacitor – Nippon

DLCAP - Electric Double Layer Capacitor - Nippon

Another feature is the high current charge-discharge ability, useful in many Industrial and Automotive Applications. A high charge-discharge efficiency makes an output efficiency of around 95% possible. These capacitors have become an useful part of Alternative Energy Electronics and Energy Harvesting. They also have applications in Electric and Hybrid Vehicles.

Aluminum Electrolytic Capacitors – Nippon

Nippon Chemi-Con. Products multilayer ceramic capacitors, film capacitors, metal oxide varistors, choke coils, optomechatronics and Aluminum electrolytic capacitors.