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SMD LED The Main Difference

SMD LED and SMD leds, lamps and lanterns is a simple and easy, it is the current through the compound semiconductor light-emitting principle, through the combination of electrons and holes, the excess energy will be released in the form of light, to achieve the effect of light.

merit

SMD leds is posted on the circuit board surface, suitable for SMT processing, reflow soldering, SMT type LED solved very good brightness, the Angle of view, flatness, reliability, consistency, relative to other packaging device, it has a strong ability to resist vibration, solder joint defect rate is low, the advantages of good frequency characteristic, it encapsulates the more in the area of the smaller LED chip, using lighter PCB and reflector material, shows reflector need to fill less epoxy resin, by removing the heavier carbon steel material pin, smaller size, half the weight of the product, and easily volume and the weight is only about 1/10 of the traditional instrumentation component, adopt the patch after packaging, electronic products smaller 40% one 60%, a 60% reduction in weight 80%, eventually make the application more hasten is perfect.

The encapsulation of the direct-plug LED is in the form of filling. Potting process is first in LED into a cavity inside the injection liquid epoxy resin, and then insert the bonding good LED bracket, let the epoxy resin cured in the oven, divorce will be LED out of the cavity from the molding. Due to its relatively simple manufacturing process and low cost, it has a high market share

considerations

1. Clean and do not use an undefined chemical liquid to clean the patch LED: an unknown chemical liquid may damage the patch LED. When necessary cleaning, soak the laminable LED in the alcohol, at a normal temperature of less than 1 minute, and naturally dry for 15 minutes before starting to use it.

2. The characteristic of moisture proof, in order to avoid moisture absorption in the product during transport and storage, SMD leds is packed in moisture-proof aluminum bag packing, and packing bag containing desiccant and humidity card, desiccant main rise to control the humidity in the bags, humidity card mainly monitor the humidity in the bags.

3. Storage bags sealing after storage in conditions for temperature < 40 ℃.

What are the main differences between the patch led and led lights?

Upright type led is usually of a tile or a few milliwatts, heat is not big, so can be arranged on the circuit board each is compact, and SMD led power is much bigger, so I need a better cooling conditions, can't do it on a circuit board is very tight.


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