Currently, 1W high power LED chip prices mainstream manufacturers are still high, at current prices, even if prices were reduced by 50% is still high, short term, the possibility of high-power chips of the price of small diving. From the packaging point of view, the price continued to drop single device space is limited, so the price or by way of single-chip devices to reduce the unit price of the lumen is difficult to go on the road costs. The following two aspects of the law might be possible to reduce the unit cost of lumens:

1, from the chip side, the need to improve the current density single-chip, the chip can make 1W 700mA or 1000mA working, and only a slight reduction in luminous efficiency.

2, from the perspective of the package, to minimize the size of the device, while reducing the thermal resistance of the device, so that the device supports a single larger current, the device power of the individual 3-5W, thereby reducing the packaging costs.

The ultimate goal is: in the case of upgrading and maintaining the luminous efficiency of the LED device and then enhanced cooling capacity, in small, light, thin packaging devices, to achieve high efficiency, high current, high power. At present, some manufacturers of ceramic-based thermal structure 3535 (T1901PW) size SMD high-power devices, 700mA work already achieved, the luminous flux reaches 220lm above. Early in 2012 will increase to 1050mA, the luminous flux 300lm above.

Also, we can use different packaging process, based on the measured thermal performance of the device 3535 can be seen, the use of flip-mode crystal device, the thermal resistance as low as 2.5 ℃ / W, so that the device operates even at 1050mA conditions, lighting Under good heat dissipation, the device junction temperature difference between the bottom of the device still does not exceed 10 ℃. led grow lights https://www.eneltec-led.com/products/led-grow-lights

In terms of power devices and improve device current density, but also an effective way to reduce the unit cost of lumens to days, photoelectric adoption of new materials with high thermal conductivity of 3020 (T3400SW) size SMD power LED products, for example, because T3400SW with ultra-low thermal resistance, excellent heat resistance, heat resistance, under the current conditions remain high light efficiency. Currently, typical luminous flux 20lm @ 60mA, early in 2012 will increase to 50lm @ 150mA, look at the current level, the unit cost of flux equivalent to approximately about half 20mA devices. Has obvious cost advantages. best led headlights http://bestledheadlight.com/