Product category: Light Emitting Diodes (LEDs)
News Release from: Avago Technologies | Subject: Mid-power AlInGaP lamps
Edited by the Electronicstalk Editorial Team on 15 November 2005
LED range signals brightness increase
Agilent Technologies has introduced what it claims to be the industry's brightest LEDs for the outdoor electronic sign and signals market.
Agilent Technologies has introduced what it claims to be the industry's brightest LEDs (light-emitting diodes) for the outdoor electronic sign and signals market The new, mid-power red (630nm wavelength) and amber (590nm wavelength) lamps are supplied in 5mm (T-1.75) domed through-hole packages with oval radiation patterns
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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This series of AlInGaP (aluminium indium gallium phosphide) LEDs can operate with currents as high as 70mA, compared with the 30mA for Agilent's extra-bright oval lamps.
This provides a substantially higher light output than conventional 30mA lamps, with the red lamps offering 3309mcd typical luminous intensity and the amber lamps at 2521mcd, both being driven at 70mA forward current.
"Agilent's industry-first, mid-power 5mm oval lamps help designers improve the visibility of their signs and signals while reducing their manufacturing costs", said Cheng Kai Chong, worldwide marketing director for the Optoelectronic Products Division in Agilent's Semiconductor Products Group.
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"This new LED lamp family is further proof of Agilent's ability to offer our customers innovative performance at competitive prices".
Designers of electronic signs and signals are seeking higher brightness levels to reduce the number of LEDs in a cluster.
With Agilent's new mid-power red and amber lamps, signs can be designed using fewer individual LEDs to provide equivalent brightness.
Alternatively, signs can be designed with the same number of LEDs, providing substantially higher brightness levels for better readability and contrast.
Since the lead spacing and packages are compatible with conventional high-brightness 5mm oval-pattern LED lamps, the upgrade requires no mechanical changes.
An oval-shaped radiation pattern provides a wider field of view with higher luminosity than standard LEDs, making the devices ideal for outdoor applications where readability in sunlight is essential.
These mid-power lamps have very smooth, matched radiation patterns, ensuring uniformity across the viewing angle of the sign or signal.
The lamps are available with two viewing angles.
With an angle of 30 degrees by 70 degrees, the red HLMP-AD31-UX000 and HLMP-AD30-UX000 (with and without lead standoffs, respectively), and amber HLMP-AL30-TW000 and HLMP-AL31-TW000 (with and without lead standoffs) are generally used for long-distance viewing in applications such as traffic signals.
With a viewing angle of 40 degrees by 100 degrees, the red HLMP-HD31-SV000 and HLMP-HD30- SV000, and amber HLMP-HL31- RU000 and HLMP-HL30-RU000 (with and without lead standoffs) are ideal for wide-viewing-angle applications such as stadium scoreboards and other message signs.
These mid-power AlInGaP lamps are supplied in Agilent's precision optical performance moulded packages, modified for higher current input and increased heat dissipation.
The die is attached within the reflector cavity, and the cavity is encapsulated by an Agilent proprietary ultraviolet-resistant epoxy blend.
The packaging design coupled with carefully selected materials allows the lamps to perform with high reliability over the -40 to +85C temperature range and provides protection from UV-A and UV-B ultraviolet radiation and humid environments.
Samples and production quantities (four-week guaranteed lead-time) are available now through Agilent's direct sales channel and worldwide distribution partners. Request a free brochure from Avago Technologies ...
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