The difference between solid tantalum capacitors and non-solid tantalum capacitors 2

II. Differences in Structure and Materials

Solid tantalum capacitors utilize pressed and sintered tantalum powder to form a porous tantalum block as the anode. A very thin layer of tantalum pentoxide is then grown on the surface of the tantalum block to serve as the dielectric layer. Finally, conductive polymer or manganese oxide is employed as the solid-state cathode material.diode

The manufacturing process for non-solid tantalum capacitors is similar, with the difference being that the cathode material uses a liquid electrolyte, typically achieved by immersing a tantalum block in a solution containing a specific electrolyte.

3. Performance Comparison

1. Capacitor Stability: Solid tantalum capacitors, due to the stability of their solid cathode material, offer higher capacitance stability and long-term reliability.diode

2. Temperature Resistance: Solid tantalum capacitors generally exhibit superior high-temperature performance and can operate within a wider temperature range.diode

3. Leakage current: Solid tantalum capacitors typically exhibit lower leakage current than non-solid tantalum capacitors, as solid-state materials are less prone to chemical reactions compared to liquid electrolytes.diode