After we finished the Blue through-hole LED production and then put it inside the black case, there comes blue LED single level circuit board indicator. Compare with regular blue DIP LED Lamps, this blue LED indicator also have a short pin and long pin and got the same lighting color as regular 3mm blue LED. Because there have a black case outside to cover the blue LED, this blue LED will have to be bent as right angle. In this way, the lighting direction is forward. Which make this LED as perfect LED indicator. Blue through-hole LED indicator is a great way to add a subtle yet noticeable visual cue to a project. It's easy to install and is a great way to indicate when a circuit is powered on or off, or when a certain action has been completed. Size of LED circuit board indicator: Notes: 1, All dimensons are in millimeters; 2, Tolerance is ±0.10mm unless otherwise ntoed; 3,590nm LED(Yellow), 520nm LED(Green) or 625nm LED (Red) are also availabl…