| 摘要 |
<p>When forming a surface-mount inductor by using E-shaped tablet, if a shape of the tablet is downsized, the shape of the tablet is complicated so the tablet cannot be formed. Even when the tablet can be formed, the tablet is likely to be broken because it is impossible to maintain the strength. Further, in order to the maintain strength, the size of a coil is limited thus, degrading its properties. A led-out ends of a coil is held so that a large burr is generated. A forming die assembly is used to include a lower die, a first upper die having three peripheral side surfaces and one opening, and a second upper die for closing the opening of the first upper die, The lower die, the first upper die, and the second upper die are configured to define a cavity therein. A coil is prepared by winding a winding wire and processing a led-out end of the winding wire such that the led-out end of the coil contacts with a side surface of the first upper die and the second upper die. The coil is placed in the cavity of the forming die assembly from the opening of the first upper die such that the led-out end of the coil contacts with a side surface of the first upper die and the second upper die, and sealing the coil with a sealant containing a magnetic powder while the first and second upper dies are clamped together, to form the core. An external electrode is formed on the core and connecting the led-out end of the coil to the external electrode.</p> |
