Saturday, July 20, 2013:
High power LEDs are undergoing continuous improvements in luminous efficacy and life span to meet general illumination and backlighting requirements. In addition, many companies are working towards improving the packaging technology of LEDs, particularly those addressing heat dissipation issues.
In this section, we feature some of the recently launched high power LEDs. However, major companies like Bridgelux, Avago, Hanz Lite, Illumitex Starlight/Gmr Light and Teknovision have not launched any new high power LEDs in the last six months.
Model: KLSL5630W, Brand: Kwality PolyWa, Manufacturer: Kwality Photonics Pvt Ltd, India
Upgraded in April 2013, KLSL5630W is India’s only SMD power LED which is manually solderable, claims the company. This 150ma rated LED delivers 50-55 lumens at just Rs 8 per watt only.
Key features
- Close binning of brightness and colour due to presorting of the LED chips
- Ease of soldering without sophisticated equipment
- Forward voltage (VF): 3.0-3.3 V
- Reverse current (IR): 10 μA
- Colour temperature: 6500 K
- Colour rendering index (CRI): 70
- Luminous flux: 50 lumens
Contact details: GV Rao, sales manager, Ph: 09848458935, [email protected], www.kwalityphotonics.com
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Model: MJT 4040, Brand: Seoul, Manufacturer: Seoul Semiconductor, South Korea
Launched in March 2013, MJT 4040 high power LED package uses multi-junction technology that allows multiple LED junctions to be combined in a single chip, thereby increasing the operating voltage and concentrating more light output within a given area.
Key features
- Operating at a nominal 64 V and 20 mA, the device can reach output levels of 200 lumens and efficacies as high as 140 lm/W (5000K CCT)
- No need for power supply and hence is more competitive in cost
- Higher reliability
- 50,000 hour lifetime, which is not reduced by a converter
Contact details: Pradeep Shah, marketing manager, Ph: +91-9029004858, [email protected], www.seoulsemicon.com
India distributors: Arihant Elsys Pvt Ltd, Elektronika Sales Pvt Ltd
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Model: XLamp XM-L2 Series, Brand: Cree, Manufacturer: Cree Inc., USA
Launched in December 2012, XLamp XM-L2 LEDs deliver up to 186 lm/W at 350 mA, 25°C. Built on Cree’s revolutionary SC³ technology next-generation LED platform, the XM-L2 LEDs double the lumens-per-dollar and deliver 20 per cent more lm/W over the original XM-L LED, thus enabling lighting manufacturers to use fewer LEDs to deliver a better lighting system for a lower cost. These LEDs are designed for very high-lumen applications such as indoor, high-bay and outdoor lighting.
Key features
- Characterised at 85°C, the XM-L2 LED is available in 2700K to 6200K colour temperatures and offers minimum CRI options of 80, 85 and 90
- Size: 5 mm x 5 mm
- Maximum drive current: 3 A
- Maximum power: 10 W
- Light output: Up to 1052 lm at 10 W, 85°C
- Typical forward voltage: 2.85 V
Contact details: Shyam Mishra, sales manager, Ph: +91-9811800940, [email protected], www.cree.com
India distributors: Arrow Electronics, Digi-Key, element14, Mouser Electronics, and WPG Electronics
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Model: LUXEON Z ES, Brand: Philips, Manufacturer: Philips Lumileds, USA
Launched in April 2013, LUXEON Z ES offers a micro-footprint, non-domed design with full spectrum availability, enabling high lumen density solutions with precise optical control.
LUXEON Z ES is available with below blackbody binning, a key feature required for superior colour perception in speciality retail and hospitality applications. In directional light sources such as an MR16 lamp, the non-domed design allows better optical coupling for greater luminance at narrower beam angles and better colour consistency than other LED solutions.
Key features
- Offered over a range of CCTs from 2700 K to 6500 K
- Micro sized at 1.6 mm x 2.0 mm
- Hot tested at Tj 85°C
- 1, 3, and 5 steps MacAdam Ellipse options
- Ultimate design flexibility due to its micro form factor
- Precise optical control from a non-domed architecture
- Leading system level lumen per dollar proposition
Contact details: Gaurav Dudeja, marketing manager, Philips Lighting India, Ph:0124-4606000, [email protected], www.india.philips.com
India distributors: Avnet, element14, Mouser Electronics, WT Microelectronics, RS Components and Controls (India) Ltd
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Model: Duris S 5, Brand: Osram, Manufacturer: Osram Opto Semiconductors, Germany
Launched in April 2013, Duris S 5 has been launched in three versions with different chip surfaces and, therefore, three different brightness levels.
Key features
The first version can be used wherever a large amount of light has to be emitted from a small surface area, for example, in downlights and LED retrofits.
- At 3000 K and a CRI of 80, the first version achieves very high brightness of 97 lm and an efficacy of more than 100 lm/W at an operating current of 150 mA
- The second version is designed for high efficacy, achieving 125 lm/W at 65 mA with 24 lm at 3000 K. It is, therefore, designed for use in panel luminaires and linear retrofits in which individual light points should not be visible and low energy consumption is an important consideration
- Version 3 has only a slightly lower efficacy and is designed for optimum system costs. It achieves an efficacy of 113 lm/W with a brightness of 28 lm—also at 3000 K
Contact details: Vikas Bali, country manager, India, Ph: +91-124-4150100, [email protected], www.osram.in
India distributors: Arrow Electronics India Pvt Ltd, Avnet Asia, Rabyte Electronics Pvt Ltd, and Tomen Electronics India Pvt Ltd
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Model: N5 series, Brand: N5, Manufacturer: SemiLEDs, USA
Launched in January 2013, with a silicone lens and uniquely designed ceramic substrate, the N5 series of LEDs features optimised brightness and efficacy, as well as excellent reliability. The N5 LEDs’ light output degradation is less than 10 per cent under the market’s most stringent test conditions (If=1400mA, ambient temperature=85°C and relative humidity=85 per cent).
These LEDs also feature special design-to-fit secondary optics for various emission angles for differentiated lighting applications.
Key features
- Junction temperature: 150°C
- DC forward current: 700 mA to 1400 mA
- Superior ESD protection
- Low thermal resistance
Contact details: Gopal Shukla, country manager (India), Ph: 9871155223, [email protected], www.semileds.com
India distributor: ExcelEltech India Inc, and Nest Connectivity Solutions
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Model: ET-1208 series, Brand: Edison Opto, Manufacturer: Edison Opto Corporation, Taiwan
Launched in January 2013, this model’s slim and miniature size allows it to be assembled in narrow or bent spaces. Hence, the ET-1208 makes lamp design more flexible. It is optimised for use as the light source of MR16, GU10 and small downlights. The lighting fixtures can be used in residential lighting and commercial lighting.
Key features
- Wide viewing angle: 120°
- In cool white, it can reach 670 lm under 4 W to 7 W (700 mA) and 950 lm under 7 W to 10 W (500 mA)
- High CRI performance (CW 70/NW 80/WW 80)
Contact details: Ph: +886 28227 6996, [email protected], www.edison-opto.com.tw
India distributors: Key Operation and Electrocomponents Pvt Ltd, Precious Electronics Pvt Ltd, and Semitech Opto Devices
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