- Overview
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Solid state aluminum electrolytic capacitor is the abbreviation of conductive polymer solid aluminum electrolytic capacitor, and it is also one of the highest order products in current capacitor products. The biggest difference from ordinary liquid electrolytic capacitors is that solid capacitors use completely different dielectric materials - conductive polymer materials. At high temperatures, these solid polymer dielectric particles have lower swelling and activity than liquid electrolytes, with a boiling point of up to 350 degrees Celsius and almost no risk of bursting.
Therefore, manufacturers of such capacitors have high testing requirements and accuracy for solid-state polymer aluminum electrolytic capacitors, requiring precise testing of a series of parameters of the capacitor to verify that all parameters of the capacitor meet the specified standards.
Our testing plan for precision testing of solid-state polymer aluminum electrolytic capacitors is the HY2830 series digital bridge. The HY2830 series LCR digital bridge can meet the continuous frequency range of 20Hz-300KHz, with a basic accuracy of 0.05%. It has a testing speed of 12.5ms/time and good stability under fast testing, which can better adapt to the needs of automated production and incoming inspection on the production line.
The main testing parameters of capacitors are Cs (capacitance), D (loss), ESR (series resistance), and Z (impedance) of solid-state polymer aluminum electrolytic capacitors.
- Solid polymer aluminum electrolytic capacitor
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Considering the product size, the SMD four segment test box is selected as the testing fixture. The fine probe of this test box can accurately contact the component pins, making it easy to operate and test small-sized surface mount components, enhancing the flexibility and versatility of testing.
- Testing process
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1. Connect the fixture, reset the short circuit, and start testing.
2. Test the capacitance and loss at a frequency of 120Hz and a voltage level of 0.5V.
3. Test the series resistance value at a frequency of 1KHz and a voltage level of 0.5V.
4. The HY2830 series digital bridge also supports 4-parameter display, which can simultaneously obtain 4 parameters at once, and can be combined with multiple parameters for more comprehensive and efficient display.
Due to the characteristics of solid-state aluminum electrolytic capacitors, high precision is required for the testing system, including the influence of the testing instrument itself on errors. To verify the accuracy of the testing, we adoptKeysight E4980AL LCR Meter is used as an auxiliary reference to compare and verify the testing accuracy of our instrument.
By comparing the data, we can see thatAt a frequency of 120Hz, the error of the capacitance value is 0.02%, and the data is accurate and precise.
In summary, the HY2830 series LCR digital bridge can perfectly solve the testing of this type of capacitor, providing a more professional testing solution for the capacitor testing industry!