At earlier eighties began a trend to replace a traditional through - hole technique with the surface mounted technology (SMT) using surface mounted devices (SMD). The SMT, although intended in principle for automatic manufacturing only expand more and more, even into a hobby world. This trend will continue, because many new components are available in SMD versions only. The SMT technique opens advantages and new applications through miniaturising of the components and increasing of reliability. The industry standard unfortunately allows that most of
the SMD components does not have a clear description. Since a tiny size of the components, they are labelled with one, two or more character or graphic SMD code. Thus it is necessary to take into account that the colour and (or) placing of alphanumeric or graphic symbols are also important. Therefore a sure identification of the components is impossible without appropriate technical documentation.
В начале восьмидесятых годов наметилась тенденция к замене традиционной технологии сквозного отверстия технологией поверхностного монтажа (SMT) с использованием устройств поверхностного монтажа (SMD). SMT, хотя и предназначен в принципе для автоматического производства, только расширяется все больше и больше, даже в мире хобби. Эта тенденция сохранится, поскольку многие новые компоненты досту
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