New LED design for increased performance and optimised lighting fixture cost

When making a decision to purchase LED lighting technology we are usually put in the balance price and cost of ownership, the reason behind this being that LED technology is general more expensive. 

However, the current market penetration rate of LED shows the argument that lower cost of ownership due to energy savings and long product lifetime is more than worth price difference is convincing.

This approach can have serious problems when the promised long term savings do not materialize. A LED can fail or degrade sooner that expected due to many reasons, from false advertising (the LED design could never perform as advertised), poor handling of heat management to mistakes in the product design. A customer faced with this issue could loose trust in the LED technology.

The solution is to reduce the price of LED products without a compromise of performance and quality. Innovation is the way to do it as is the case of Nichia's new LED design with Direct Mountable Chip technology.

Featuring the Direct Mountable Chip technology the new E17A and E21A LED series from Nichia are direct mountable, packageless, chip scale LEDs which reduce total system cost and increase performance at the same time.

The Direct Mountable Chip technology slashes at one major element of system cost: heat management. With thermal resistance of only 0.3 (℃/W junction to Ts measuring point), heat sinks can be smaller or higher performance can be obtained without increasing the heat sink. 

Compared with 1-3 Watt LEDs from other manufactures the NVSWE21A ( [email protected] and 2.1W) and the NCSWE17A  ([email protected] and 1.05W) are considerably more effective at transferring the heat away from the LED chip.

In practical terms, for example with cooling element with a total thermal resistance of 15℃/W (Tc measurement point to ambient temperature) we can obtain up to 30% increase in the luminous flux from using the NVSWE21A compared to a LED with similar characteristics but with 5℃/W thermal resistance (Junction to Ts measuring point) and up to 80% increase if the same resistance would be 10℃/W, without any decrease in lifetime.

 Further savings at the system cost can be obtained by product miniaturization which is possible by increasing the luminous flux possible from a square millimeter of LED package. This relationship between LED light and size is called flux density.

Direct Mountable Chip technology leads to an increase of flux density by up to 95% compared with the best alternative LED designs. From only 4.41 mm² (2.1 x 2.1 mm) the NVSWE21A has a typical flux of [email protected] and 2.1W.

 In combination with low thermal resistance, high flux density can reduce product dimensions and therefore cost significantly. Unknown to some, up to 80% of the cost of a LED product does not result from the LED itself but from its case, cooling, driver and optics. For example if a smaller product has 15% less material cost this will have the same impact in the price if the industry slashing LED price by 75%. As a bonus, less material use is good for the environment.

While further reduction in unit price per LED is desirable, the approach to achieve it with research and invention is the better choice. Direct Mountable Chip also empowers luminaire designers to create designs never before possible because LEDs can be clustered very closely together with conventional SMT and reflow production processes. Due to the seemingly borderless design a LED package of custom size can be "created" from clustering Direct Mountable Chip Nichia LEDs.

Currently the Direct Mountable Chip is used in the following Nichia LEDs

You can purchase the new LEDs from our shop. Details below.

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