Single white light led board detected in the aging data, and the white light LED assembly into a lamp aging detected when the data is certainly a little out of. This difference in size, depending on when the power LED work parameters and lighting design, as well as the use of environmental lighting.

First, select what kind of LED lamp beads.

This is important, LED lights can be said that the quality of beads is a very important factor. Give some examples, the same to the chip wafer 14mil white segment represented, to do with ordinary epoxy primer with white plastic packaging and packaging glue beads out of the LED lamp, single light in a 30-degree environment, a one thousand hours later, the light attenuation data for the 70% decline; If Class D low failure glue package, in the same aging conditions, thousands of small-time decline of 45%; if the Class C low bad glue package, in the same aging conditions thousands of small-time decline of 12%; if the Class B low bad glue package, in the same aging conditions, thousands of small-time decline of 3%; if the Class A low failure glue, in the same aging conditions, thousands of small-time decline of 6%.

Why will lead to different packaging process on how big the difference?

The main reason is that the LED chip span. Occasionally and briefly heated over a hundred degrees, that is does not matter, afraid afraid of the long period of high temperatures, the LED chip is a great damage.

In general, the ordinary thermal conductivity of epoxy resin is very small, so when light work when the LED chip, LED chip to emit heat, and the limited capacity of ordinary thermal conductivity epoxy resin, so when you are outside from the LED light source measuring the temperature of the LED holder 45 degrees when, LED white light within the chip core temperature might exceed 80 degrees. LED temperature node is actually 80 degrees, then when the LED chip in the thermostat temperature in the work, is very subject to suffering, which accelerate the aging of the LED light sources.

When the LED chip at work, core temperature produced a 100-degree heat, it can immediately pin through the bracket 98% of the heat conductivity and, thus, reduce the heat to its hurt. Therefore, LED lamp bead holder temperature is 60 degrees, it's probably just the chip center temperature of 61 degrees only.