Nickel powder for internal electrodes, multilayer ceramic capacitor including the same, and circuit board having electronic component mounted thereon

A multilayer ceramic capacitor comprising:

• a ceramic body including dielectric layers;
• a plurality of internal electrodes formed in the ceramic body, having the dielectric layers interposed therebetween, and including a nickel powder;
• and
• external electrodes formed on external surfaces of the ceramic body and electrically connected to the internal electrodes,
• wherein when a specific surface area of the nickel powder is defined as b, an average particle size of the nickel powder is defined as D, and a density of the nickel powder is defined as ρ, the nickel powder satisfies the following equation:
• 0.8≦b*D*ρ/6≦1.0.

A circuit board having an electronic component mounted thereon, the circuit board comprising:

• a printed circuit board having first and second electrode pads disposed thereon;
• and
• a multilayer ceramic capacitor mounted on the printed circuit board,
• wherein the multilayer ceramic capacitor includes:
• a ceramic body including dielectric layers;
• a plurality of internal electrodes formed in the ceramic body, having the dielectric layers interposed therebetween, and including a nickel powder;
• and
• external electrodes formed on external surfaces of the ceramic body and electrically connected to the internal electrodes, and
• when a specific surface area of the nickel powder is defined as b, an average particle size of the nickel powder is defined as D, and a density of the nickel powder is defined as ρ, the nickel powder satisfies the following equation:
• 0.8≦b*D*ρ/6≦1.0.