| 摘要 |
An insulating element includes an insertion portion extending from a first surface of a circuit board when the insulating element is inserted into a through hole formed in the circuit board. The insertion portion has a first height measured from the first surface. The first height is greater than heights of leads of components arranged at sides of the insulating element. A holding portion of the insulating element is connected to the insertion portion. The holding portion has a second height measured from a second surface of the circuit board, and has a second height greater than heights of the components arranged at the sides of the insulating element.
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