The Y20202R00000Q9L is a 2R 8W through-hole mounting ultra high precision LED Resistor with lead (Pb)-free termination. In the modern LED-backed LCD, screen brightness is a very important function. The brightness is obtained by the LED panel mounted to the rear of the LCD, which controls brightness by boosting the input voltage connected to the panel. The input voltage usually comes from a Li-ion battery. A boost converter converts the Li-ion battery voltage to dozens of volts for the LED panel operation. To avoid brightness flickering and to control the stability of the LED output voltage, stable and precise current sense resistor with low thermal EMF and low absolute temperature coefficient of resistance are used.
