Why there is such a trend for Standard UHBLED footprint 3mmx3mm?

Due to the market need for smaller package LED with more power emission, there is a trend of smaller packages that comes with 3mm x3 mm ceramic base UHBLED of more than 1 W in the market.

Rebel, XRE, XP and Oslon and more to come in months from these big player Lumileds, Cree and Osram.

The key advantages are that they can put more LEDs in a smaller area to emit more light.

They can have a comparatively smaller optic or smaller light guide for these light rays to emit.

They can have tape and reel format on these product for SMT mounting.

Final fixture can have more power with Multi-LED configuration especially for Illumination.

They can use automatic Surface mount machine for board level insertion.

The smaller Footprint will use less material and good for cost down on the LEDs Price!

The Huge K2 Type of LED will soon be phased out.

Seoul Semi Low Profile SMD LED

Seoul Semiconductor (CEO: Lee Chung Hoon, www.acriche.com), a world-leading LED manufacturer, announced on May 12 the launch of its 120lm/W high-efficiency and SMD type LED (Part No: LCW100Z1) for general purpose lighting.

The new patented product shows remarkable superiority in price as it raises brightness of the same chip by over two times by flowing more than double the current. As an ultra-thin LED with dimensions of 3.5mm x 2.8mm x 1.6mm, the LCW100Z1 is a high efficiency product that delivers up to 7.8lm (@0.06W) at the low current of 20mA and 14.3lm at the current of 40mA, and its viewing angle is 120 degrees.

Another strength of the LCW100Z1 is that its reliability is improved by adopting an optimized thermal design to maximize luminous efficiency needed for lighting. The new LCW100Z1 product comes in three ranges of correlated color temperature’s (CCT); including pure white, warm white and natural white. Samples of the LCW100Z1 were already received favorably by leading lighting appliance manufacturers around the world.

As it can immediately replace the existing Top View LED, the LCW100Z1 is expected to be widely adopted for tube-type fluorescent lamps and surface light source lamps. While the expansion of power LED market is retarded due to high price, the LCW100Z1 is also anticipated to serve as a catalyst for expanding the LED lighting market as it allows lighting manufacturers to produce a variety of applied lighting devices.

We believe that more and more similar package size 3mm x3mm range is going to launch into this illumination market. The price will make some difference for people to get an earlier train on Green Illumination. Not a question at all they are using the best LED bonder in the industry for the World Class manufacturing of such kind of LED.

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Osram New 1W Oslon LED

This is the new ultra-white Oslon SSL. LED from OSRAM Opto Semiconductors. Its package measures just 3 x 3 mm, 1 Watt class, a typical value of 100 lm/W. A beam angle of 80°. Its low thermal resistance of 7K/W. In addition to ultra-white (5700 to 6500 K), the LED will be available this summer in neutral white and warm white. Its color temperature will range from 2700 to 4500 K.

The Oslon SSL is manufactured using the latest chip technology, ensuring a high luminous efficacy. At an operating current of 350 mA this light source achieve a typical brightness of 110 lm in ultra-white (5700 and 6500 K), with a maximum possible luminous flux of 130 lm at present.

At an operating current of 350 mA and a color temperature of 3000 K it achieves a typical efficiency of 75 lm/W and a brightness of 85 lm. And brightness is an impressive 155 lm at an operating current of 700 mA (warm white). The advantage here is that applications that demand high lighting levels can be completed with fewer Leds.

An Extract from Osram Web site 6 May 2009

Personal comment.
I think it is small, the standard Form factor as XRE, XP, advanced Simplified LED packaging process is used. With Osram world class manufacturing capability, I think likely will be a good price performer! Good news for there will be one good selection for general illumination and a green light source for Tomorrow.