The present invention provides an electronic circuit device of fishing tackle which can increase the water resistance of circuit board, wherein, a winding reel braking mechanism (25) is provided with an insulating film (90) which is formed with a mode of covering an electronic component, a coil (62), a insertion-type component (84) and the whole current substrate (70). In the device, the insulating film (90) prepared by synthetic resin is synthesized by the mode of covering the insertion-type component (84) and the whole current substrate (70). A clearance is not generated between the current substrate and the insertion-type component (84). Therefore the water resistance of circuit board (70) can be increased as the current substrate (70) is not exposed.本發明的課題為：讓釣魚用品的電路裝置的電路基板的防水性提高。本發明的解決手段為：在捲筒制動機構(25)，具有絕緣覆膜(90)，該絕緣覆膜(90)形成為：將電器零件、線圈(62)、嵌入構件(84)、與電路基板(70)的全體一同予以覆蓋。這裡藉由將合成樹脂製的絕緣覆膜(90)形成為：將嵌入構件(84)、與電路基板(70)全體一同予以覆蓋，則在電路基板(70)與嵌入構件(84)之間不會產生間隙。於是，電路基板(70)不會露出到外部，則能讓電路基板(70)的防水性提升。
