What Is Equivalent Series Resistance (ESR)?
Equivalent series resistance (ESR) is a measurement of internal resistance in an energy-storage device and is specified in ohms (Ω). Internal resistance influences the flow of electrical energy through the device and...
Read postCapacitor Selection Guide
Capacitors are widely used in electric circuits to store energy, suppress voltage spikes, and filter noise, ultimately enhancing a product’s performance. Although capacitors consist of...
Read postWhat Is a Tantalum Capacitor?
Tantalum capacitors are used in electronic devices including portable telephones, pagers, personal computers, and automotive electronics. When selecting between available tantalum capacitors, there are a...
Read postWhat Are the Soldering and Handling Recommendations for Ultracapacitors?
Tecate Group carries a variety of different ultracapacitor cells. Most of these products are designed to be mounted to PC boards by way of soldering,...
Read postWhat Is the Best Way to Size an Ultracapacitor for an Application?
The system variables needed are used to calculate the size and number of ultracapacitor cells appropriate for any application. In order to get the most...
Read postWhat Are the Steps to Perform a Constant Current Discharge Test?
A constant current discharge test can be useful for customer evaluation of an ultracapacitor module prior to application testing. Please note that, for safety reasons,...
Read postHow Does Temperature Affect Ultracapacitors?
One of the main advantages of ultracapacitors is their wide temperature range. The effects extreme temperatures have on ultracapacitor cells depends on whether the temperature...
Read postWhy Use Series/Parallel Combinations of Ultracapacitors?
An ultracapacitor cell can only withstand low voltages. In general, if cells are operated above their rated voltages for a long period of time, their...
Read postWhat Is Self-discharge and Leakage Current?
Over time, charged ultracapacitors without a load slowly lose their charge. “Self-discharge” is the voltage drop a charged ultracapacitor cell experiences after a set period...
Read postWhat Is End-of-life and Failure Mode for an Ultracapacitor?
In general, ultracapacitors do not have a hard end-of-life failure as do batteries. Their end of life is defined as when the capacitance and/or ESR...
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