Testing and Usage Precautions for High-Brightness White LED Chips

Release Date:

2020-12-06

　　Test data for high-brightness white LED chips:

　　1.  High-brightness white LED chip Color Rendering Index: Can meet the standard of 80 CRI or higher, and can be customized to 90–95 CRI.

　　2. Color tolerance index for LED chips: can meet the standard of less than 5.

 

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　　3. Luminous efficacy of high-brightness white-light LED chips: Currently, low-power white-light LED chips achieve an efficacy of 60–90 lm/W, whereas high-power LED chips can attain a luminous efficacy of 100–200 lm/W.

　　4. LED chip resistance specifications: highly stable, with minimal current variation under constant voltage conditions.

　　5. Thermal and cold resistance of LED beads: They can operate normally at a standard high temperature of 80°C and a low temperature of –45°C; however, repeated thermal cycling may cause the lights to fail.

　　6. Consistency of high-brightness white LED chips: Color temperature can ensure good consistency; the test data above are conclusions drawn from practical experience.

　　Recommendations for the use of high-brightness white LED chips:

　　1. It is recommended that the LED chip be operated at a typical drive current of 0.5 W, corresponding to 100–145 mA; the maximum current should not exceed 150 mA.

　　2. The instantaneous drive voltage and reverse voltage must not exceed 5 V; otherwise, High-brightness white LED chip It will be damaged or severely damaged, leading to irreparable problems.

　　3. The ambient temperature ranges from −30°C to −60°C. When optimizing the thermal management design of the luminaire, it is recommended that the temperature of the LED chip’s negative terminal remain below 60°C.

　　4. It is recommended that the maximum continuous illumination time per day be 18 hours. Prolonged illumination will have a certain impact on the lifespan of LED chips and significantly increase light depreciation.

　　5. If the current is 100–150 mA, a reduction of 10 mA in current will decrease the luminous flux by approximately 4%. Therefore, the luminous flux of the white-light LED chip can be calculated.

　　6. At a current of 148–150 mA, the power consumption is 0.5 W. Based on this, the customer can calculate the total power consumption of the high-brightness white LED chips in operation.

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