A niobium hydride or niobium hydride alloy is ground at a temperature of
-200 to 30.degree. C. in the presence of a dispersion medium to obtain a
niobium powder for capacitors, having a low oxygen content, the niobium
powder for capacitors is granulated to obtain a niobium granulated product
for capacitors, having an average particle size of 10 to 500 .mu.m, the
niobium powder or granulated powder for capacitors is sintered to obtain a
sintered body, and a capacitor is fabricated by forming a dielectric
material on the surface of the sintered body and providing another part
electrode on the dielectric material, whereby a capacitor having good LC
characteristics and less dispersed in the LC characteristics is obtained.
