IEC 60679-3:20 12规定了带引线外壳的石英晶体控制振荡器的外形尺寸和引线连接。与上一版相比，此版本包括以下重大技术变更: -CO01、CO07、CO10、CO17和CO18缺失； -删除了CO 06的当前引脚布局。并将CO 06的新引脚布局添加为CO 40； -将CO 15的新布局添加为CO 41； -添加了两个新的外壳，CO 42和CO 43。因此，修订版包括15种类型的附件，如第5条表1所示。

IEC 60679-3:2012 specifies the outline dimensions and lead connections for quartz crystal controlled oscillators with lead enclosures. This edition includes the following significant technical changes with respect to the previous edition:
- CO 01, CO 07, CO 10, CO 17 and CO 18 were deleted;
- The current pin layout of CO 06 was deleted. And new pin layout of CO 06 was added as CO 40;
- New layout of CO 15 was added as CO 41;
- Two new enclosures, CO 42 and CO 43 were added. Therefore revised edition includes 15 types of enclosures as in Table 1 of Clause 5.