LED design Application Notes

LED has a unique advantage, but the LED is a vulnerability of semiconductor products, so we use LED products be extra careful. This article will give you summarize some applications in LED design precautions must attach great importance.

LED temperature

To pay attention to make the LED temperature resistance becomes smaller. When the ambient temperature rises , LED light resistance will decrease , if you use a regulated power supply will cause the LED operating current increases, when more than its rated operating current, it will affect the service life of LED products , will make a serious LED light source , " burn " , so the best selection of the constant current source power supply, to ensure that the LED current from the outside temperature.

Sealed LED products

Whatever the LED products, when applied to outdoor , are faced with waterproof, moisture-proof sealing problems , if not handled properly it will directly affect the service life of LED products . There are few high requirements on product quality manufacturer of traditional epoxy resin " water " method to seal the LED products, this method is more trouble , for the larger products LED products can also cause weight gain .

LED current can not exceed the LED current IF

Overcurrent LED life 's work would soon decline, if exceeded, will immediately burn the LED .

LED knuckle should be noted

LED in the corner or knuckle , please do not too close from the gel , and the gel should be kept more than 2mm distance , otherwise it would be inside the bracket and LED colloidal gold wire separation , corners folded in the same place not more than three times , bent corners 90 degrees , and then back to the original position is 1.

Soldering Temperature

Soldering temperature at 260 degrees Celsius, time control in less than 5S , welding point from the bottom of the lens than at 2.5mm , soldering iron must be grounded , absolutely not permitted to live soldered LED.