IEC 62326-20:20 16规定了用于高亮度LED的印刷电路板（以下称为PCB）的特性。用于高亮度LED的PCB的许多方面与普通PCB相同，因此，本标准的某些方面也描述了一般方面。与上一版相比，此版本包括以下重大技术变更: a)本版重点介绍高亮度LED用印刷电路板的技术内容； b)与用于高亮度LED的印刷电路板相关的数字已被细化。

IEC 62326-20:2016 specifies the properties of the printed circuit board (hereafter described as PCB) for high-brightness LEDs. Many aspects of the PCB for high-brightness LEDs are identical with those of ordinary PCBs, therefore, some aspects of this standard also describe general aspects. This edition includes the following significant technical changes with respect to the previous edition:
a) this edition focuses on the technical content of the printed circuit board for high-brightness LEDs;
b) the figures related to the printed circuit board for high-brightness LEDs have been refined.