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SMD LED is a solid-state semiconductor devices, it can be the DianZhuan directly into the light, the emergence of the SMD LED power to improve the production efficiency greatly. Bring in current period is about SMD LED some basic common sense.
on the market, there are three common SMT LED, upright type LED, TOPLED, high power LED.
a LED and into the type:
upright type LED electrical connection is to take the form of 2 pin plug straight, is one of the traditional, low-end products, because the package thermal resistance is big, the chip heat dissipation is not easy, so the light attenuation fast, short service life. But the advantage is that the price is cheaper, can make a small light Angle.
TOPLED is connected to 2, 4 or 6 foot patch, is the world common light source. According to the size of the packaging appearance, is divided into 0805, 1206, 3528, 3535, 5050, 5060, such as specifications, packaging appearance, the greater the heat dissipation performance, the better, can bear corresponding is, the greater the power output of the more light.
three, high power LED:
this LED chip USES a large size and strengthen the thermal channel technology design and production of LED, usually for 0. 5 w, 1 w, 3 w, 5 w specifications, such as a single 1 wled can bear the working current of 300 ma, the luminous flux and output more than 100 lumens, widely used in some civil commercial lighting, traffic control, photography, night vision and other fields.
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