An apparatus comprising: a circuit board (122;222;322) having an operative mounting surface; and a capacitor assembly (110;210;310) secured to the circuit board (122;222;322), the capacitor assembly (110;210;310) comprising: a plurality of axial-lead capacitor elements (112;212;312); and a capacitor clamping assembly (114;214;314) retaining the axial-lead capacitor elements (112;212;312) longitudinally perpendicular to the mounting surface, the capacitor clamping assembly (114;214;314) comprising: an upper electrically insulating section (134A;234A;334A); a lower electrically insulating section (134B;234B;334B), a combination of the upper electrically insulating section (134A;234A;334A) and the lower electrically insulating section (134B;234B;334B) defining a cylinder having a plurality of internal recesses (136;236; 336) disposed circumferentially around the cylinder retaining the plurality of axial-lead capacitor elements (114;214;314); and a conductive path electrically connecting the plurality of capacitor elements (112;212;312) to at least one electrical circuit element disposed proximate the mounting surface. a circuit board (122;222;322) having an operative mounting surface; and a capacitor assembly (110;210;310) secured to the circuit board (122;222;322), the capacitor assembly (110;210;310) comprising: a plurality of axial-lead capacitor elements (112;212;312); and a capacitor clamping assembly (114;214;314) retaining the axial-lead capacitor elements (112;212;312) longitudinally perpendicular to the mounting surface, the capacitor clamping assembly (114;214;314) comprising: an upper electrically insulating section (134A;234A;334A); a lower electrically insulating section (134B;234B;334B), a combination of the upper electrically insulating section (134A;234A;334A) and the lower electrically insulating section (134B;234B;334B) defining a cylinder having a plurality of internal recesses (136;236; 336) disposed circumferentially around the cylinder retaining the plurality of axial-lead capacitor elements (114;214;314); and a conductive path electrically connecting the plurality of capacitor elements (112;212;312) to at least one electrical circuit element disposed proximate the mounting surface. a plurality of axial-lead capacitor elements (112;212;312); and a capacitor clamping assembly (114;214;314) retaining the axial-lead capacitor elements (112;212;312) longitudinally perpendicular to the mounting surface, the capacitor clamping assembly (114;214;314) comprising: an upper electrically insulating section (134A;234A;334A); a lower electrically insulating section (134B;234B;334B), a combination of the upper electrically insulating section (134A;234A;334A) and the lower electrically insulating section (134B;234B;334B) defining a cylinder having a plurality of internal recesses (136;236; 336) disposed circumferentially around the cylinder retaining the plurality of axial-lead capacitor elements (114;214;314); and a conductive path electrically connecting the plurality of capacitor elements (112;212;312) to at least one electrical circuit element disposed proximate the mounting surface. an upper electrically insulating section (134A;234A;334A); a lower electrically insulating section (134B;234B;334B), a combination of the upper electrically insulating section (134A;234A;334A) and the lower electrically insulating section (134B;234B;334B) defining a cylinder having a plurality of internal recesses (136;236; 336) disposed circumferentially around the cylinder retaining the plurality of axial-lead capacitor elements (114;214;314); and a conductive path electrically connecting the plurality of capacitor elements (112;212;312) to at least one electrical circuit element disposed proximate the mounting surface.