The junction temperature data will be light and heavy, and the spectrum will be unveiled at the 2013 High-tech LED Lighting Exhibition.

< strong>[Text / high-tech LED reporter Liu Pingping ] Manufacturers of LED application products are very concerned about the junction temperature data of LED devices after lighting under normal ambient temperature conditions. Because it can provide an intuitive basis for the reliability and life assessment of the product, it can also provide a basis for the product to evaluate the rationality of the thermal structure design.

Xu Jie, Marketing Manager of Hangzhou Xingpu Optoelectronics Technology Co., Ltd. (hereinafter referred to as “Star Spectrophotoelectric”), a subsidiary of Hangzhou Zheda Tricolor Instrument Co., Ltd., said that due to the high power of COB, the junction temperature changes rapidly after power-on during the test. Different test methods and conditions have a great impact on the results of the test.

“The length of the test, the heat dissipation of the test fixture, etc. directly affect the test results. Under the same test conditions, the change in junction temperature can change the LED light flux, color temperature, light efficiency and other important indicators by more than 8%. So the junction temperature problem is The issues that must be considered during the COB testing process."

In September 2013, Starlight Optoelectronics exhibited the company's core product SSP8810-S LED light, color, electricity and heat comprehensive test system. “The sampling speed of this test system is less than 10us, the voltage test stability is 1mV, and the test design meets the requirements of EIA/JEDEC51-1.”

Xu Jie introduced, in order to ensure the accuracy of the junction temperature test, this test system in addition to clever design also selected high-end imported chips, and equipped with 3112 light color test system, enabling the system to simultaneously detect the light of various LEDs and lamps, Thermal, electrical, and color characteristics and their relationship.

In addition, the system can continuously test the light color characteristic change function under different junction temperatures, and continuously express the relationship between the parameters such as luminous flux, light efficiency, wavelength, color temperature, color rendering index and color coordinate of LED and LED lamps with junction temperature.

As an important strategic partner of the 2013 Hi-Tech LED Lighting Exhibition, Xu Jie said that at the upcoming high-tech LED lighting exhibition, Star Spectrum Optoelectronics will not only bring the above test system to the show, but also select some representative products to unveil. .

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