Super capacitor selection method

With more and more electronic products, more and more types of electronic components, more and more functions, many products will use super capacitors, the following is the detours of choosing a super capacitor, I hope to help you:

1. When designing a structure, the space to be taken is very small. In the electronic design stage, materials can only be found in accordance with the space given to the structure. After a great deal of hardship, they finally find a suitable capacity and volume, but they have not been verified. When debugging, it was found that the demand for instantaneous power supply could not be satisfied.

2. Ask the manufacturer to test the report. The actual capacity given by the report is to meet our requirements. However, because the internal resistance of the capacitor is relatively large, 50 ohms cannot meet the requirement for instantaneous large-current discharge. Only other types of capacitors can be selected.

3. When selecting a super capacitor, pay attention to the following points:

Discharge capacity;

range of working temperature;

Internal resistance: tens of ohms level is suitable for small current discharge, m ohm level is suitable for large current discharge;

Cycle life, this is also very important;

Leakage current, low ESR characteristics;

Operating voltage range;

Tolerance range;