Plessey Lighting Montage

Plessey's High Brightness LEDs

Solid State Lighting (SSL), powered by Light Emitting Diodes (LEDs), is the key technology for reducing the many terawatts of electrical energy consumed and the many tons of greenhouse gases produced when generating light around the world. One of the main barriers for the migration to LED powered solutions is the initial investment cost as the LEDs are manufactured using exotic, expensive material substrates. Plessey is the market leader in bringing LEDs into the lower cost, mainstream world of semiconductors, with its pioneering GaN-on-Silicon technology.

LEDs are made using Gallium Nitride (GaN), a semiconductor material that has specific light emitting properties. Plessey's MaGIC™ (Manufactured on GaN-on-Si I/C) process is an innovative approach to LED production that will enable a leading and sustainable position for many years to come. The basis of this approach is to exploit the cost benefit of using standard Silicon substrates on which the GaN layer is grown. Plessey's patented technology solves the physical mismatch issues that result from growing GaN-on-Silicon. Furthermore, utilising the inherent advantages of a large wafer scale silicon based approach, Plessey is able to exploit advanced packaging technology from the IC industry and is bringing to the market intelligent squared LED (i2LED) products that will enable high performance cost effective SSL solutions.


Plessey is bringing to market a range of LEDs for solid-state lighting applications

  • Solid-state lighting forms a significant part of the global effort to reduce energy consumption and greenhouse gas emissions.
  • LEDs are being designed into replacement products as well as architectural lighting, street lighting, commercial lighting and medical applications

Plessey's innovative products combine a strong R&D and operational expertise with disruptive GaN-on-Si technology

  • Plessey acquired the University of Cambridge spinout CamGaN in December 2011 (includes LED knowhow, IP and patents).

Plessey's proprietary GaN-on-Si technology

  • Enables the growth of high performance GaN LED structures on standard silicon substrates
  • Unique synergies with Plessey's 6-inch processing facility in Plymouth
  • Plessey is now positioned among the first commercial players to successfully manufacture LEDs on 6-inch silicon substrates
  • This technology delivers industry-standard performance at a dramatically reduced cost of manufacture with estimated savings of up to 80%
Plessey's goal: To become the commercial leader in GaN-on-Si LEDs
The price and performance of Plessey's MaGIC™ LEDs will drive an affordable switch from 60W bulbs to LED lamps.

The LED market is said to

  • Almost double its penetration into the global lighting market by 2020.
  • Save trillions of kWh of electricity, equivalent to the output of hundreds of power plants.
  • Reduce emissions of CO2 by billions of tonnes.
  • Provide hundreds of billions of dollars in energy savings.

As a consequence of these benefits the market for white LEDs is said to grow exponentially over the next decade.

The use of standard silicon (Si) substrates is the foundation of Plessey's competitive advantage. Si substrates are widely available in larger sizes, higher volumes and lower prices than the sapphire and silicon carbide (SiC) substrates that are used for most of today's LED production. The race to industrialise GaN-on-Si has been an industry quest for the past few years, and Plessey are pleased to claim a leadership position today that can be maintained for many years to come. Independent market research predicts that GaN-on-Si will claim a significant share of the total LED market and Plessey will be at the forefront of this emerging trend.

Supply Chain Advantages

Plessey are the first LED supplier with a European wafer manufacturing base. This aspect is a real benefit for the many European based customers and design houses as it provides access to a local competence centre for all things related to the design and production of LEDís. As the LED market is still evolving this will allow for a high level of contact between Plessey and the European market shapers in the solid-state lighting market. Although product design and wafer production are European-based Plessey have a global presence for sales and technical support and will always adapt to any location changes of our customers and partners.

LED Futures

The first application of LED's is in existing form factors that allow for replacement of incandescent and fluorescent light sources. These products are usually a lot more expensive to buy but the higher efficiency leads to clear cost-of-ownership benefits and a greatly increased working life. Other benefits include the ease that LED's can be dimmed and that there are no end-of-life hazardous substance issues to be dealt with. Existing form factors often do not exploit the real strengths of LED technology but they are the most common application of LED products today.

LED Market Impact

LED's are a real game changer for the lighting market as they enable a completely fresh approach to lighting product and system design. A single LED die is practically a point source of light that means in terms of miniaturisation there are few boundaries to size and weight, this is vital for the rapidly evolving market in wearable electronics. But the application of LED's is not limited to smaller light sources, arrays of LED's can be configured in a virtually infinite number of form factors for large area lighting. And with the extremely long life of LED's there is often no need to provide for easy replacement in the system design.

Solid State Explained

The most common, traditional form of lighting - the incandescent bulb - produces light through thermal radiation: a metallic element in the bulb heats up and produces light. The second most common form 'the fluorescent tube' makes use of a high electric field applied to a mercury vapour that then generates light. Solid-state lighting also uses an electric field to generate light but it is applied across a solid structure rather than a gaseous vapour, hence the name solid-state lighting. The solid structure referred to is a semiconductor diode that emits light when an electric field is applied, this leads to the name Light Emitting Diode (LED). There are various types of LED that produce different colours (wavelengths) of light but the most common LED technologies produce blue light. By applying phosphor coatings the blue is converted to white light, the same principle as used in fluorescent tubes.

LED Reliability

The working life of LED powered lighting is many times greater than that of conventional light sources. This working life can extend to many decades, often longer than the expected life of the host application itself. For example, LED lighting can be embedded into a car dashboard, safe in the knowledge that the LED working life of 40-50 years clearly exceeds the expected working life of the car. To achieve such longevity some basic considerations need to be taken into account in the design and construction of the lighting system. The most critical element is the temperature: there is a direct correlation between the LED working life and the temperature they are subjected to. As with all electronic equipment exposure to moisture will also limit the working life. The practical control of these aspects is well understood and many LED products are now in use that we can confidently predict will last for decades to come.

Datasheet Product Package Image Colour Nominal (lm) CCT (K) Nominal Radiant Power (mW) Typical VF (V) IF (mA) Sample/Buy
PDF Icon PLB010005 DIE PLB010005 Blue - - 5 3.3 5 Request Information
PDF Icon PLB010020 DIE PLB010020 Blue - - 23 3.1 20 Request Information
PDF Icon PLB010021 DIE PLB010021 Blue - - 23 3.1 20 Request Information
PDF Icon PLB010050 DIE PLB010050 Blue - - 55 3.1 60 Request Information
PDF Icon PLB010170 DIE PLB010170 Blue - - 122 2.95 100 Request Information
PDF Icon PLB010190 DIE PLB010190 Blue - - 250 3.3 200 Request Information
PDF Icon PLB010330 DIE PLB010330 Blue - - 430 3.05 350 Request Information
PDF Icon PLW13D003 1005 PLW13D003 White 0.36- 0.90 - 16 3.1 5 Request Information
PDF Icon PLW2835AA 2835 PLW2835AA White 50-70 2800-6000 - 3.1 150 Request Information
PDF Icon PLW2835AB 2835 PLW2835AB White 55-75 2800-6500 - 3.1 150 Request Information
PDF Icon PLW2835AC 2835 PLW2835AC White 53-63 2700-6500 - 3.1 150 Request Information
PDF Icon PLW2835BA 2835 PLW2835BA White 22-28 2800-7000 - 3.1 60 Request Information
PDF Icon PLW2835BB 2835 PLW2835BB White 20-28 3000-7500 - 3.1 60 Request Information
PDF Icon PLW2835CA 2835 PLW2835CA White 65-70 3000-6500 - 3.1 150 Request Information
PDF Icon PLW3014CA 3014 PLW3014CA White 10-15 2600-7000 - 3.1 30 Request Information
PDF Icon PLW3030DAB 3030 PLW3030DAB White 109-123 2700-6500 - 6.2 150 Request Information
PDF Icon PLW3030DAC 3030 PLW3030DAC White 110-150 2600-7000 - 6.2 150 Request Information
PDF Icon PLW5630BB 5630 PLW5630BB White 58-78 2800-6500 - 3.1 150 Request Information
PDF Icon PLW5630CB 5630 PLW5630CB White 45-60 2800-6500 - 3.1 150 Request Information