Updated: Jun 17, 2020
Aluminum hybrid capacitors employ a combination of liquid and conductive polymer to form the electrolyte and aluminum to form the cathode.
The polymer offers low ESR performance while the conventional liquid electrolyte provides higher voltage and higher capacitance ratings than a 100% polymer device.
They are designed for commercial, industrial and automotive applications and are available in long life, high temperature (+125°), ultra high temperature (+135°C+), and AEC-Q200 compliant versions.
Because the solid polymer electrolyte is less able to absorb vibration than the liquid electrolyte, numerous manufacturers also produce vibration tolerant (#vibrationtolerant) devices that typically comprise a form of rubber skirt or wall around the capacitor.