- 10 pieces total including models EL1010, EL1012, EL1013, EL1014, EL1015, EL1017, EL1018, EL1019, and EL1010 again. - The components are electronic parts with defined electrical characteristics for a range of circuit needs. - The EL1018 is packaged in SOP - 4 format, specifically for integration on printed circuit boards that meet the design requirements. - A 10-piece quantity provides a practical assortment for common applications, prototyping, and simple repairs. - The SOP - 4 package of EL1018 supports straightforward PCB integration and consistent mounting in compliant designs. Use scenarios - Prototyping a multi-model circuit on a compact development board that uses EL1010, EL1012, EL1013, EL1014, EL1015, EL1017, EL1018, and EL1019. - Replacing or stocking spare parts for equipment where EL1018 in SOP - 4 packaging is required on the PCB. - Educational or hobby projects that require a small, related set of components from the EL1010 to EL1019 family for hands-on learning and experiments.