Published-IP

Tantalum capacitors are more susceptible to mechanical shock and vibration due to increased anode mass. Due to the rigidity of the solid tantalum anode the assembly needs to be designed with clearance to allow for tolerance stackup variation. The described invention immobilizes the anode using material compatible with most electrolytes. The immobilizer geometry is designed with holes to allow free flow of electrolyte during the fill process. The geometry is also designed to be compliant to allow a nominally interference fit. By centering the anode, the invention further isolates the fragile separator layers from thermal damage from laser welding.

The invention may be fabricated from a wide range materials with elastic or viscoelastic properties. Examples materials include:
1. Metallic based (Stainless steel, titanium, etc.)
2. Polymer based (polycarbonate, polyimide, polypropylene, HNBR, PTFE, etc.)
3. Ceramic based (silica, zirconia, alumina, etc.)
4. Shape memory alloys (NiTi, etc.). SMAs could also allow easier installation in a flat state, thus eliminating the need for complex tooling to pre-compress the component prior to insertion.
5. A composite from materials above blended via coating, weaving, brading, laminating, welding, or other joining methods.
6. The above materials with the addition of a viscous material, such as an acrylic based adhesive, for improved damping.