In the 18-DIP (0.300, 7.62mm) package, real time clocks is embedded as a dependency.Tube is the package format.In this electrical RTC, the supply voltage is 4.5V~5.5V.Clock/Calendar is the type of electrical real time clock that is being used.As you can see from the diagram, this electronic component is mounted in the way of Through Hole.There should be -10°C~70°C operating temperature.When operating, electronic time clocks are possible to ensure that Leap Year are maintained.In the series RTC-72421, it belongs to the real-time clock category.
RTC-72421B: ROHS Features
18-DIP (0.300, 7.62mm) package RTC-72421 series
RTC-72421B: ROHS Applications
There are a lot of EPSON RTC-72421B: ROHS Real Time Clocks applications.