The book provides data on the color and code marking of radioelements of imported and domestic production according to ratings, operating voltage, tolerances and other characteristics. All devices are grouped in sections that provide information on the letter and color designations of active and passive components of domestic and foreign companies. These markings make it possible to recognize and select from a sea of miniature products the electronic components necessary for a specialist to service and repair household and industrial electronic equipment. Reference materials are systematized by type of product in tabular and graphical form. Analogues have been proposed for replacing microcircuits and other radio components from various domestic and foreign manufacturers that are most often found in the repair of household and industrial equipment. Recommendations for comparison and selection of individual components are also given. Designed for a wide range of trained radio amateurs, students of higher and secondary specialized educational institutions and specialists servicing household electronic equipment.