Electrical component and method of forming same

A method comprising:

• disposing a cavity in a substrate that extends between a first major surface and a recessed surface;
• disposing tantalum material in the cavity, the tantalum material comprising tantalum particles;
• disposing a dielectric layer on the tantalum particles;
• disposing an electrolyte cathode layer on the dielectric layer;
• and
• disposing a cathode electrode on the electrolyte cathode layer and over the cavity.

An implantable medical device comprising:

• a housing;
• and
• an electronic assembly within the housing and comprising an electrical component, the electrical component comprising:
• a substrate comprising a first major surface, a second major surface, and a cavity disposed in the substrate and extending between the first major surface and a recessed surface;
• tantalum material disposed within the cavity and comprising tantalum particles;
• a dielectric layer disposed on the tantalum particles;
• an electrolyte cathode layer disposed on the dielectric layer;
• and
• a cathode electrode disposed over the cavity.