From the perspective of practical application, high-power LED devices with simple installation and relatively small size will replace traditional low-power LED devices in most lighting applications. In order to meet the needs of lighting, the lighting lamps composed of low-power LEDs must concentrate the light energy of many LEDs to meet the design requirements. However, the disadvantages are that the circuit is extremely complex and the heat dissipation is not smooth. In order to balance the current and voltage relationship between each LED, a complex power supply circuit must be designed. In contrast, the power of high-power single LED is far greater than the total power of several low-power LEDs. The power supply line is relatively simple, the heat dissipation structure is complete, and the physical characteristics are stable. Therefore, the packaging methods and packaging materials of high-power LED devices cannot simply apply the traditional packaging methods and packaging materials of low-power LED devices. Large dissipation power, large heat output and high luminous efficiency put forward new and higher requirements for LED packaging technology, packaging equipment and packaging materials.

The lighting grade high-power LED device package provides LED lighting source, LED lighting module and LED lamp solutions for the lighting industry. High and low temperature testing is required for the packaging of lighting grade high-power LED devices. The reason is that LED lamps may be used in relatively harsh environments, such as drilling, and cities with relatively cold winter in the north. Therefore, it is necessary to verify their reliability under extreme temperature conditions

LED device test board is as follows:

ThermoTST series high and low temperature tester of Chengdu Zhongliang Cryogenic Technology Co., Ltd. is widely used in the reliability test of lighting level high-power LED devices and LED packaging

Test method for high-power LED devices: It is recommended to use the Chengdu Medium and Low Temperature Technology High and Low Temperature Tester TS760. The test temperature that meets the customer's requirements is - 55 ℃ to 150 ℃, the temperature change rate is - 55 ℃ to+125 ° C for about 10 seconds, and the temperature accuracy is ± 0.1 ℃. The LED power-on test can be completed by testing one board at a time and cycling for 3-5 minutes According to the special size of our test fixture T-Cap, we have made a comprehensive design for the product. At present, the test is very successful.