MAGNETIC COMPONENT
A magnetic component of an embodiment has a resin-made hollow container that houses a doughnut-shaped magnetic core, and the resin forming the hollow container exhibits a white color to gray color having a chromatic value C of 0 (achromatic) to 2 and a lightness V or 8 or higher as defined by JIS Z8721 “Color specification—Specification according to their three attributes”. The hollow container has an inner wall portion formed to form a hollow portion, an outer wall portion formed to surround the inner wall portion, and a bottom portion provided at one end of each of the inner wall portion and the outer wall portion to close a space between the inner wall portion and the outer wall portion, and houses the doughnut-shaped magnetic core between the inner wall portion and the outer wall portion.
1 . A magnetic component comprising
a hollow container that houses a doughnut-shaped magnetic core, the hollow container being made of resin, the hollow container including:
an inner wall portion formed in such a manner as to form a hollow portion;
an outer wall portion formed in such a manner as to surround the inner wall portion; and
a bottom portion provided at one end of each of the inner wall portion and the outer wall portion in such a manner as to close a space between the inner wall portion and the outer wall portion,
wherein a color of the resin forming the hollow container exhibits a hue in which a chromatic value C is 0 (achromatic) to 2 and a lightness V is higher than or equal to 8 as defined by JIS Z8721 “Color specification—Specification according to their three attributes”.
2 . The magnetic component according to claim 1 ,
wherein the color of the resin forming the hollow container exhibits a hue in which the lightness V is higher than or equal to 9.
3 . The magnetic component according to claim 1 ,
wherein the color of the resin forming the hollow container exhibits a hue in which the chromatic value C is less than or equal to 1.
4 . The magnetic component according to claim 1 ,
wherein the hollow container is made of a polyamide resin.
5 . The magnetic component according to claim 1 ,
wherein a change difference in percentage of an ISO brightness (JIS P8148) decreases more than or equal to 60% relative to an initial value of the ISO brightness in percentage determined by the ISO brightness measurement method after exposure to a high temperature of 120° C. for 1000 hours.
6 . The magnetic component according to claim 1 ,
wherein the hollow container has a structure in which at least one of the outer wall portion or the inner wall portion at an end opposite to the bottom portion is bent to form a lid portion.
7 . The magnetic component according to claim 1 ,
wherein the doughnut-shaped magnetic core is obtained by winding a magnetic ribbon.
8 . The magnetic component according to claim 1 ,
wherein the magnetic component has a compressive strength higher than or equal to 50 N at a normal temperature (25° C.).
9 . The magnetic component according to claim 1 ,
wherein a lead is inserted into the hollow portion.
10 . The magnetic component according to claim 1 ,
wherein a lead is inserted into the hollow portion and wound in such a manner as to alternately pass through an inner wall side and an outer wall side of the magnetic component.
11 . The magnetic component according to claim 1 ,
wherein a lead is inserted into the hollow portion, the lead having a rectangular cross section.
12 . The magnetic component according to claim 1 ,
wherein the magnetic component is a noise suppression element.