COIL COMPONENT AND METHOD OF MANUFACTURING THE SAME.

摘要

A COIL COMPONENT COMPRISING: A COIL (2) HAVING A THROUGH-HOLE (1), A MAGNETIC CORE INCLUDING THE COIL, AND A TERMINAL (4), WHEREIN MAGNETIC CORE COMPRISES A TOP PORTION (11) DISPOSED AT AN UPPER PART OF THE COIL, A BOTTOM PORTION (12) DISPOSED AT A LOWER PART OF THE COIL, AND A MIDDLE PORTION (13). AN OUTER LAYER THICKNESS OF THE MIDDLE PORTION (W1) IS LESS THAN A DIAMETER OF THE THROUGH-HOLE, WHILE THE TOP PORTION AND THE BOTTOM PORTION ARE HIGHER IN DENSITY THAN THE MIDDLE PORTION. THE CONFIGURATION OF THE PRESENT INVENTION PROVIDES A SMALL SIZE COIL COMPONENT WITH LESS OCCURRENCE OF MAGNETIC SATURATION TO PREVENT LOWERING OF INDUCTANCE EVEN WITH THIN TOP PORTION (11) AND BOTTOM PORTION (12). THE COIL COMPONENT FURTHER HAS IMPROVED RELIABILITY.(FIG 1)