IEC 61240:2016 压电器件 - 表面安装器件（smd）的外形图准备用于频率控制和选择 - 一般规则

标准编号：IEC 61240:2016

中文名称：压电器件 - 表面安装器件（smd）的外形图准备用于频率控制和选择 - 一般规则

英文名称：Piezoelectric devices - Preparation of outline drawings of surface-mounted devices (SMD) for frequency control and selection - General rules

发布日期：2016-10-24

标准范围

IEC 61240:2016(E)规定了用于绘制表面安装的压电器件封装(在本文档中称为SMD)的所有尺寸和几何特征的一般规则，以确保用于频率控制和选择的SMD的所有轮廓图的机械互换性。与上一版相比，此版本包括以下重大技术变更:-轮廓图已从三个视图（顶部、正面和底部）改为基于第三角度投影中的ISO布局的视图，其中右侧视图已添加到顶部、正面和底部视图中；-外壳包装的参考线和几何尺寸已更改以供实际使用；-关于用于频率控制和选择的压电器件（SMD）的小型化无引线陶瓷外壳的信息已包含在附件中。

IEC 61240:2016(E) sets out general rules for drawing all dimensional and geometrical characteristics of a surface-mounted piezoelectric device package (referred to in this document as SMD) in order to ensure mechanical inter-changeability of all outline drawings of the SMDs for frequency control and selection. This edition includes the following significant technical changes with respect to the previous edition:
- outline drawings have been changed from three views (top, front and bottom) to that based on ISO layout in the third-angle projection, in which the view from the right has been added to the top, front and bottom views;
- reference line and geometrical dimensions of the package for enclosures have been changed for practical use;
- information on miniaturized leadless ceramic enclosures of piezoelectric devices (SMD) for frequency control and selection has been included in an annex.

标准预览图