IEC 60191-4:2013+A1:2018 specifies a method for the designation of package outlines and for the classification of forms of package outlines for semiconductor devices and a systematic method for generating universal descriptive designators for semiconductor device packages. The descriptive designator provides a useful communication tool but has no implied control for assuring package interchangeability. This edition includes the following significant technical changes with respect to the previous edition:
a) Material code "S" is added to indicate a silicon based package.
b) Description of "WL" is added to be used for general use. THIS CONSOLIDATED VERSION CONSISTS OF THE THIRD EDITION (2013) AND ITS AMENDMENT 1 (2018). THEREFORE, NO NEED TO ORDER AMENDMENT IN ADDITION TO THIS PUBLICATION.