The models of light-emitting diodes are quite diverse. Although the domestic standard model is FGXXXXX, we can still see many light-emitting diodes named after factory standard models such as BTXXXX, 2EFXXX, LEDXXX, and TMXXX in the market and equipment. The models of imported products are also diverse. Fortunately, there is not a high requirement for light-emitting diodes in general usage. As long as the appearance and color match, most different models of light-emitting diodes can be interchanged. For special types of light emitting diodes with high brightness or low voltage, you can refer to relevant product manuals or materials before selecting them
Light emitting diodes can be lit using direct current, alternating current, or pulse current.
. Light emitting diode is a current type device, whose luminous brightness is directly proportional to the working current, and the working current varies depending on their model, generally within the range of 5-30mA (excluding lighting light-emitting diodes). If used for a long time under high current, it is easy to cause the brightness of the LED to decline, reduce its service life, and excessive current (referring to exceeding the allowable limit value of the tube) can also burn the tube. In order to prevent excessive current from burning out the LED, it is necessary to connect a suitable current limiting resistor in series in the circuit, and the LED should not be directly connected to both ends of the power supply
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