Low acoustic noise capacitors

A printed circuit board (PCB) for use in a handheld electronic device, comprising:

• an electrical component comprising:
• a dielectric portion;
• a first termination element;
• and
• a second termination element, wherein the first termination element and the second termination element each includes:
• an outermost conductive contact layer relative to the dielectric portion,
• an innermost metal-glass termination layer, and
• a porous nickel-aluminum alloy conductive layer that includes a conical porous structure and is directly between the outermost conductive contact layer and the innermost metal-glass termination layer.

A portable computing device comprising:

• a printed circuit board (PCB);
• and
• a capacitor assembly electrically coupled to the PCB, the capacitor assembly comprising:
• a first electrode and a second electrode embedded in a dielectric region, wherein the first electrode and the second electrode are each electrically coupled to a multi-layered termination element abutting a perimeter of the dielectric region, wherein the multi-layered termination element includes:
• an outermost conductive contact layer,
• an innermost metal-glass termination layer, and
• a porous nickel-aluminum alloy conductive layer that includes a conical porous structure and is directly between the outermost conductive contact layer and the innermost metal-glass termination layer.