LED junction T8 Tube

 Figure 7: LED color characteristics of the test method

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5, the thermal characteristics

LED thermal characteristics mainly refers to the thermal resistance and junction temperature. Thermal resistance is the heat flow along the channel and the channel temperature difference dissipated power ratio. LED junction temperature is the PN junction temperature. LED junction  T8 Tube temperature and the thermal resistance of LED optoelectronic properties that affect the important factors.

Existing tests of the LED junction temperature generally in two ways: one is the use of infrared temperature measurement microscope or micro thermocouple measured the temperature of the LED chip surface and sees it as the LED junction temperature, but accuracy is not enough; another one species are determined using the forward bias current and junction temperature changes in the relationship between the inverse to determine the LED junction temperature.

6, the reliability LED Flexi 

LED reliability includes the electrostatic sensitivity characteristics, life, environmental characteristics.