| 摘要 |
PURPOSE:To obtain a dielectric filter in which the soldering of a terminal can be performed satisfactorily and inspection can be accurately applied by forming a soldering layer in which a soldering terminal part is protruded over a peripheral insulating coating when the soldering of parts is performed on a printed circuit board. CONSTITUTION:The insulating coating material 13 is applied to the entire plane except a terminal pattern 11 of the lower plane of the printed circuit board 10 on which a dielectric core 20 and a coupling circuit element 30 are placed. Moreover, the soldering layer 15 is formed on the part 11 of the printed circuit board 10 required to be soldered protruding from the insulating coating 13 in a thickness thicker than that of the coating 13. In this way, each terminal can be brought into contact with a corresponding terminal on a packaged substrate side, which prevents a soldering defect from occurring and enables the inspection to be performed accurately. |
