What is the difference between power and energy?
Energy is the amount of work that can be done. Power is the amount of work that is done over a specific time period. In other words, power measures how fast energy is transferred. Power is measured in watts (W), energy in Joules (J). A low ESR supercapacitor can deliver much higher power than traditional memory back up product such as Panasonics Gold Caps. Are your supercapacitors surface mountable? CAP-XX supercapacitors are a prismatic surface mountable design. Due to the nature of the materials used special handling is needed for attachment to a PCB. A post wave solder or post IR reflow process is necessary using a soldering iron for attachment. More information on handling can be found in the CAP-XX Assembly Notes (PDF, 53KB). Are CAP-XX supercapacitors environmentally friendly? Yes, CAP-XX supercapacitors are lead-free and contain no toxic substances, as opposed to most types of batteries, so products containing supercapacitors can be recycled without their removal. Supercapacitor
Energy is the quantitative measure of the ability to do “work” (whatever “work” is). In simple mechanics, lifting an object weighing 100 newtons to a height of 1 meter is the same amount of work as lifting an object half the weight (50 newtons) for twice the distance (2 meters). The “energy” is the product of the two quantities, the force (the component of force opposite of the direction of motion) times the distance. If the force is in newtons and the distance is in meters, we call the units of energy “Joules”. In physics there are lots of different relationship involving energy including the classical expression for Kinetic Energy T = \frac{1}{2} m v^2 which expresses (at slow enough velocities) the kinetic energy of a body of mass m with velocity v. and Einstein’s famous mass-energy relationship E = m c^2 which relates the total energy (rest energy + relativistic kinetic energy) of a body to the relativistic mass of the body. (c is the speed of light.) Power is time rate of expendit
