551-0609F is a green diffused LED indicator optimized for 5V direct operation. It features a forward current range of 10–20 mA with a peak wavelength of 565 nm, delivering typical luminous intensity of 19.0 mcd at 5V test condition. The device has a reverse voltage rating of 5V minimum at 100 µA and is housed in a compact 3mm LED package with standardized dimensions (A: 0.085 inch, B: 0.018 inch, C: 0.040 inch, D: 0.115±0.010 inch). This green diffused LED is commonly used in status indication, panel displays, and general-purpose signaling applications where reliable, cost-effective visual feedback is required.