Coil component and circuit board having the same

A circuit board comprising:

• a substrate;
• and
• a coil component mounted on the substrate,
• wherein the coil component comprising:
• a core including a first flange part, a second flange part, and a winding core part positioned between the first and second flange parts;
• first, second, third, and fourth terminal electrodes provided on the first flange part;
• fifth, sixth, seventh, and eighth terminal electrodes provided on the second flange part;
• first and second wires bifilar wound around the winding core part;
• and
• third and fourth wires bifilar wound around the winding core part,
• wherein one and other ends of the first wire are connected respectively to the first and sixth terminal electrodes,
• wherein one and other ends of the second wire are connected respectively to the second and fifth terminal electrodes,
• wherein one and other ends of the third wire are connected respectively to the third and eighth terminal electrodes,
• wherein one and other ends of the fourth wire are connected respectively to the fourth and seventh terminal electrodes,
• wherein the first and second wires cross each other in a first crossing area,
• wherein the third and fourth wires cross each other in a second crossing area different from the first crossing area, and
• wherein the substrate comprises:
• first to eighth land patterns connected respectively to the first to eighth terminal electrodes;
• a first connection pattern for short-circuiting the first and fifth land patterns;
• and
• a second connection pattern for short-circuiting the fourth and eighth land patterns.

An coil component comprising:

• a core including a first flange part, a second flange part, and a winding core part positioned between the first and second flange parts;
• first, second, third, and fourth terminal electrodes provided on the first flange part;
• fifth, sixth, seventh, and eighth terminal electrodes provided on the second flange part;
• and
• first, second, third, and fourth wires wound around the winding core part,
• wherein one end of each of the first, second, third, and fourth wires is connected to an associated one of the first, second, third, and fourth terminal electrodes,
• wherein other end of each of the first, second, third, and fourth wires is connected to an associated one of the fifth, sixth, seventh, and eighth terminal electrodes,
• wherein each of the first and second wires is larger in a number of turns than each of the third and fourth wires,
• wherein the third and fourth wires are wound on the first and second wires,
• wherein the winding core part includes first and second winding surfaces,
• wherein the first and second wires cross each other on the first winding surface, and
• wherein the third and fourth wires cross each other on the second winding surface.