Some tips on the use of LED lamp beads

5730 lamp beads experimental data:

1. Color rendering index: It can reach the international standard Ra=80 or above. (Note: The color rendering index is inversely proportional to the luminous flux, please measure the customer according to the actual situation).

2, color tolerance index: can reach the international standard less than 5. (Note: The color tolerance index and the actual color of the LED white light seen by the naked eye are a certain asymmetry. It is possible that the color tolerance index is high, but the actual color of the LED white light is unacceptable.)

3, light effect: At present, the internationally popular LED white light effect is 60-90lm/W, and a certain type of LED white light in Japan can reach 100-120LM/W light effect.

4. Electrical internal resistance index: very stable. Under the premise of constant voltage, the current ripple is small.

5, resistance to heat and cold: in the positive 80 degrees high temperature and minus 35 degrees low temperature can still work normally. And many times of hot and cold cycle dead lights.

6, consistency: color temperature can ensure good consistency! The above data is the conclusion of work experience

Suggested data for the use of 5730 lamp beads:

1. Recommended drive current: 100-145mA; maximum current recommended is not to exceed 150mA.

2. The instantaneous driving voltage and reverse voltage should not exceed 5V, or the LED lamp bead may be damaged or seriously damaged and cannot be repaired.

3, the use of ambient temperature -30 ° C ~ +60 ° C, it is recommended to optimize the thermal design of the lamp, so that the temperature of the LED white light pin negative is below 60 degrees.

4, the maximum allowable lighting hours per day is 18 hours, continuous lighting will have a certain impact on the life of LED lamp beads.

5. If the current is at 100-150 mA, the luminous flux is reduced by about 4% for each 10 mA reduction; the luminous flux of the LED white light during operation can be calculated accordingly.

6. The power is 0.5W at 148-150mA; the customer can calculate the total power consumption of the LED lamp during operation.

LED lamp bead use precautions:

1. All operators who need to touch the LED lamp bead must wear a truly effective anti-static wristband.

2. If there is a need for bending of the LED pin, the folding point must be more than 3mm from the LED colloid;

3, LED normal welding requirements are 260 ° C ± 3 ° C, welding time should not exceed 2 seconds, if it is a tin furnace, the temperature of the tin furnace is below 275 ° C, the time of immersion tin should not exceed 2 seconds, requires operation Staff movements are very skilled and precise.

4. When the LED is over wave soldering, the wave soldering machine is required to be grounded. When the grounding wire is connected, it must not be connected to the ground wire of the city power grid. It must be connected to a real ground wire completely separated from the ground wire of the city power grid. This ground wire requires the lead wire to directly penetrate the depth of the wet ground below 5 meters. Note: Many users do not notice this, which causes the wave soldering machine to directly break through the LED chip , causing the LED lamp bead to leak and light or dead.

5. All the places or materials in contact with the materials should be connected to the real ground wire.

6. The process of detecting the lamp bead and inserting the lamp bead onto the PCB board must be very cautious. It must be triple-protected: first, the operator must wear a truly effective anti-static ring. Second, the work desktop must be covered with anti-static rubber. Third, the front of the operator must be equipped with an ion fan (except the static fan) to eliminate static electricity.

7. The LED light board is well prepared. Before the power-on detection, it is necessary to make sure that the circuit of the light board is not short-circuited with tin and tin. If there is a short circuit, the LED light bead will be damaged or seriously damaged, or it will appear immediately, or a few It takes a long time or more to appear, causing a hidden danger. Therefore, it is necessary to carefully check the circuit condition. This has occurred many times in many users. This is especially important!

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