Dictionary Introduction

Initially all definitions from the JEDEC and EIA publications listed in Annex A were considered for inclusion in this dictionary. The following were not included: (1) terms having a specialized meaning only within the context of a particular publication (usually a test method), e.g., “brush: A toothbrush with a handle made up of nonreactive material …”; and (2) concepts where the publication gives only a symbol and a term but no definition. This dictionary, like any dictionary, is primarily intended to define concepts. For an extensive list of symbols and abbreviations with the corresponding terms for many variations (dc, peak, rms, small signal, large signal, etc.), see JEP104, Reference Guide to Letter Symbols for Semiconductor Devices.

All entries were reviewed for punctuation, grammar, and clarity, as well as for accuracy, and reworded if such was considered warranted. If the definition was substantially recast, the number of the source publication is followed by a pound sign (#). The editors have made every effort to ensure that the intent of the original definition is retained in all cases. When the same term is defined in more than one source publication in substantially different words having essentially equivalent meanings, the formulation was selected that, in the opinion of the editors, is the most completely and clearly stated; the pound sign was applied to the references to the other publications. If the same term is defined with different meanings in two or more publications, all forms are given in alphanumeric order by publication reference. The definitions are numbered (1), (2), … , but no order of preference is intended.

While most of the conventions used in this dictionary are self-explanatory, two may need further explanation: (1) Terms separated by semicolons (;) are synonyms. (2) Square brackets [ ] enclosing a part of a term and possibly parts of its definition indicate that the words placed between them may replace all or some of the preceding words. Selection of the bracketed part of the term requires the selection of the bracketed parts of the definition. This convention is used to show at first sight the construction of terms having parallel definitions.


The goal is to consider for inclusion definitions from all JEDEC publications and standards. At the present time, only definitions from the publications listed in Annex A are included.