Toshiba has started sales of gallium nitride on silicon white LED packages that are being marketed as a cost-competitive alternative to current LED packages. Production of LED chips is typically done on 2- to 4-inch wafers with an expensive sapphire substrate. Toshiba and Bridgelux, Inc. have developed a process for manufacturing gallium nitride LEDs on 200mm silicon wafers, which Toshiba has brought to production at Kaga Toshiba Electronics Corporation, a discrete products manufacturing facility in northern Japan.
The newly available Leteras LEDs comes in a 1-Watt, 6450 package. Other Leteras LEDs in 3535, 3030, and 3014 packages are under development. The newly available Leteras LED packages (part number TL1F1-NW0,L) come in color temperatures of 3000, 4000, and two in 5000K. They measure 6.4mm by 5.0 mm. At 350mA and 2.9 volts they have a luminous flux of 85, 95, 100, and 112 lumens respectively . The packages have a 120 degree viewing angle. The LEDs have a color rending index minimum Ra of 80 except for the higher lumen output version at 5000K that has a minimum Ra of 70. Toshiba says that the white LED packages are for general purpose lighting, TV backlighting and other areas of application.
About Toshiba Electronics
Toshiba Corporation (株式会社東芝 Kabushiki-gaisha Tōshiba?) is a Japanese multinational engineering and electronics conglomerate corporation headquartered in Tokyo, Japan. Its products and services include information technology and communications equipment and systems, electronic components and materials, power systems, industrial and social infrastructure systems, household appliances, medical equipment, office equipment, lighting and logistics.