ROTATION ANGLE SENSOR AND MANUFACTURING METHOD FOR ROTATION ANGLE SENSOR

To suppress the rattling of a sensor IC attached to an attachment member.SOLUTION: A rotation angle sensor 10A includes a sensor IC 20A attached to an attachment member 30A. The attachment member includes connecting terminals 32-35 protruding upward from an attachment face 31 and positioning guides 36-38 for positioning the sensor IC at an attachment position 39 of the sensor IC together with the connecting terminals and protruding upward from the attachment face. The sensor IC includes a lead frame 21 on which an electronic circuit is mounted and an external packaging 22 for covering the electronic circuit. The lead frame 21 includes leads 211-214 and outside portions 215-217 disposed on the outer periphery of the external packaging 22. At least one of the outside portions of at least some of the leads includes an elastic structure. The sensor IC 20A is attached to the attachment member 30A in such a way that the outside portion 215 is pushed against the guide 36 by an elastic force emanated by the elastic structure and the leads 211-214 are joined to the connecting terminals 32-35.SELECTED DRAWING: Figure 1 【課題】取り付け部材に取り付けられたセンサＩＣのガタつきを抑制する。【解決手段】回転角センサ１０Ａは取付部材３０Ａに取り付けられるセンサＩＣ２０Ａを有す。取付部材は、取付面３１から上方に突出する接続端子３２〜３５と、取付面から上方に突出し、センサＩＣの取付位置３９に接続端子とともにセンサＩＣを位置決めするガイド３６〜３８とを有す。センサＩＣは、電子回路が実装されるリードフレーム２１と、電子回路を覆う外装２２とを有す。リードフレーム２１は、リード２１１〜２１４と、外装２２の外周に配設される外設部分２１５〜２１７とを含む。リードと少なくとも一部の外設部分のうちの少なくとも一方は弾性構造を有す。センサＩＣ２０Ａは、弾性構造が発する弾性力によって、外設部分２１５がガイド３６に押し付けられ、リード２１１〜２１４が接続端子３２〜３５に接合されて、取付部材３０Ａに取り付けられている。【選択図】図１