The new OSTAR Compact LED from OSRAM Opto Semiconductors is accommodated in the same 3.9 x 3.6mm
package size as the previous version, enabling small projectors to be designed
with higher brightness without increasing their size. Instead of 4A, the new
LED can now be pulsed up to 6A, achieving 350 lm in amber, 600lm in green and
165 lm in blue in pulsed mode (typically 120Hz, 2 ms, Ts= 25C).
Thanks to a new packaging material, its thermal resistance has been reduced to
3K/W, compared to 6K/W for the previous version, allowing heat to be dissipated
performance of the high-power OSTAR Compact LED is achieved with a 2 mm˛ chip
that benefits from improved epitaxial processes and a more even power
The new LED with the higher current capability extends
the portfolio of OSTAR Compact LEDs for projection applications. The OSTAR
portfolio includes LEDs with chips having sizes of 750 x 750µm and 1 x 1mm
available in all colors.
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
A group of researchers at the Seoul National University have discovered a way to take material from cigarette butts and turn it into a carbon-based material that’s ideal for storing energy and creating a powerful supercapacitor.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.