DIN EN 60852-4:1997
电信和电子设备用变压器和电感器的外形尺寸.第4部分:使用YEI-2型叠片的变压器和电感器
Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment - Part 4: Transformers and inductors using YUI-2 laminations (IEC 60852-4:1996); German version EN 60852-4:1996