However, achieving this has not been possible until now due to the use of epoxy or silicone resins for molding of typical White chip LEDs. These types of material could not provide enough reliability to prevent degradation in luminosity or provide enough package strength to facilitate mounting on circuit boards. Rohm is adding white to its LED range, adopting a packaging material that combines the benefits of epoxy and silicone resins and makes it possible to achieve class-leading reliability. The SMLD12WBN1W was proven to maintain 100% of its luminosity after operating for 1,000 hours (at 25°C, IF=20mA). This represents an improvement of 20x in operational life when compared to similar products on the market. Additional tests showed that the package strength was improved 25 times with the new material when compared to products using silicone resin. This will contribute to significantly reducing the occurrence of failures during fabrication when mounting on circuit boards.
Rohm Semiconductor - www.rohm.com