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Optoelectronics/Displays??

LED backlighting strips promise high intensity, reliability

Posted: 19 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:LED? backlighting strip? display application?

Jacob's Ladder backlighting strips

TT electronics Optek Technology has developed a new family of visible LED backlighting strips that offer high intensity, reliable and cost-effective backlighting solution.

Designated OPA775 and OPA776, the "Jacob's Ladder" series of backlighting strips are offered with daylight white LEDs and designed specifically for illumination of small- and medium-size display applications where lighting intensity and reliability are imperative.

"Using 'Jacob's Ladders' provides significant benefits to our customers, including the ability to utilize one power supply and a single connector for the entire configuration, whether you are implementing one or 60 backlighting strips into your application," said Alan Bennett, VP of sales for Optek Technology. "Also, the 120 light beam angle is ideal for illuminating small- and medium-size areas, such as light boxes and PoS displays."

Additional applications for the OPA775 and OPA776 LED backlighting strips include architectural accent lighting, under-counter lighting, media illumination and large channel letter lighting.

The OPA775 strips are designed for operation at 12V. Each OPA775 consists of one strip of 7.5-inch FR-4 board with three LEDs. One to 30 strips may be connected per buss. The OPA775 features Zierick 1286T connectors, enabling the construction of the "Jacob's Ladder." The total current drawn by 30 strips is 3.75A, and the strips are shipped in sets of 30.

The OPA776 backlighting strips match the performance of the OPA775 devices but are operated at 24V. One OPA776 consists of two strips of 7.5-inch FR-4 board with three LEDs on each strip and a jumper wire connecting them. The OPA776 strips are shipped in sets of 60, and the total current drawn by 60 strips is 3.75A.

Luminous flux for both the OPA775 and OPA776 backlighting devices is 50 lumens per strip, with a drive current to each LED of 125mA. Optek crimps the buss wires at manufacturing and spaces the LED strips at 6-inch intervals.

Typical pricing for the OPA775 Series ranges from $5.58 to $5.70 in quantities of 1,000. Pricing for the OPA776 series backlighting ladder strips ranges from $10.85 to $11.18 in quantities of 1,000. Lead time for both devices, if stock is not available, is from six to eight weeks.





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