Points to Note in UV LED Design

Points to Note in UV LED Design

Points to note in the design

1. Although Nichia recommends using copper circuit boards for the installation of this product, copper circuit boards may cause the glass lens to crack or solder to fracture due to the heat and other factors encountered during the reflow soldering process; therefore, it is essential to verify in advance that the reflow soldering process will not adversely affect this product.

2. During processes such as cutting the printed circuit board after it has been mounted, bending of the board may cause the outer casing to crack; therefore, when decidingWhen configuring LEDs, every effort should be made to minimise the stress on the LEDs caused by flexing and twisting of the circuit board.

3. In the cutting of printed circuit boardsLEDs are affected by the magnitude of mechanical stress and their installation position; therefore, when configuringLEDAt all times, the LED should be positioned where it is least likely to be subjected to mechanical stress.

4. Manual handling must be avoided when cutting circuit boards; specialised tools must be used.

5. If aluminium circuit boards are used for installation, it should be confirmed in advance that no tin cracking will occur due to thermal stress during use.

6. 从LEDVolatile organic compounds emitted from peripheral materials (such as frames, washers, adhesives, secondary lenses, lens caps and thermal paste) may adhere toLEDon lenses and the like. Particularly in sealed conditions, these volatile organic compounds may undergo discolouration due to the effects of heat and photon energy, leading toLEDLight output has dropped significantly. Allowing air to circulate can help minimise this drop in light output. Furthermore, it is advisable to test the actual modules after assembly/The product is subjected to a light-on test to confirm that its optical characteristics will not be affected during actual use.