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Cotco TBL Blue LEDs
Feb 2005
Marktech OptoelectronicsRequest Info
Maximize Light Extraction Efficiency
LATHAM, N.Y., Feb. 18 -- Cotco TBL Series LEDs are only available through Marktech Optoelectronics, a designer of LEDs for more than 15 years. Cotco Luminant Devices Ltd. has chosen Marktech to handle all of its North American technical sales and marketing for its high-performance LED line.

Cotco TBL Blue series LEDs use the most recent advances in InGaN/SiC technology. The die process combines highly efficient InGaN materials with a silicon carbide (SiC) substrate in a geometrically enhanced Epi-down chip structure designed to maximize light extraction efficiency.
The material also incorporates a current distribution layer that requires only a single wire bond for increased LED reliability. The vertically structured LED chips are approximately 115 microns in height and require a low forward voltage. This die improvement to Cotco's high-brightness LED family enhances the performance of a wide variety of applications, such as decorative lighting, full-color video screens, mobile appliance lighting and automotive illumination.
With luminous intensities of up to 12,000 mcd, the TBL blue LEDs from Cotco provide a luminous intensity that is significantly brighter than products currently on the market. TBL Blue LEDs are available in 5-mm round and elliptical package styles in a variety of viewing angles.
TBL Blue Features

  • 5 mm and elliptical packages
  • Available in 15?, 30?, 60? x 35? and 110? x 50? viewing angles
  • 465-nm blue
  • InGaN/SiC die technology
  • Single-wire bond for increased reliability
  • Luminous intensities up to 12,000 mcd
  • High efficiency
  • High reliability
  • Exceptional cost vs. performance ratio
Pricing & Availability

Pricing for the TBL blue LEDs from Cotco starts at $0.38 in 5K lots, depending on the package.

In addition to the Cotco line of LEDs, Marktech offers Toshiba Tosbright LEDs and Toshiba Constant Current LED drivers along with a wide variety of standard discrete LEDs, surface mounts, displays and photo sensors.

For more information, visit:; e-mail:

Marktech Optoelectronics
3 Northway Lane North
Latham, NY 12110
Phone: (800) 984-5337
Fax: (518) 785-4725


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