| 摘要 |
<p>Provided is a non-reciprocal circuit element which improves stability and reliability of solder connection between a terminal electrode of a circuit board and an electrode arranged on ferrite. The non-reciprocal circuit element is provided with a permanent magnet; ferrite to which a direct current magnetic field is applied by the permanent magnet; first and second center electrodes arranged on the ferrite; and a circuit board (20). A connecting electrode arranged on the ferrite is electrically connected through solder to terminal electrodes (25a, 25b, 25c) formed on the circuit board (20). On the terminal electrodes (25a, 25b), solder flow preventing sections (27a, 27b) are formed by laser irradiation.The solder applied on extending sections (25a', 25b') of the terminal electrodes (25a, 25b) are blocked by the preventing sections (27a, 27b) when the solder is molten, and the solder is prevented from flowing out to the main body side of the terminal electrodes (25a, 25b).</p> |
