Light-emitting diode installation tips
Release time
2022-11-28
A small light-emitting diode has a great role, we know that light-emitting diodes are widely used. In the field of car lights, lighting industry, wall washing lights, beauty apparatus and other fields are playing a great role. But so small a light-emitting diode has what installation tips.
1.welding line: formal small chip usually drive current is generally more than 350ma, the chip size is larger, in order to ensure the uniformity and stability of current injection into the chip, the positive and negative poles of the chip and bracket positive and negative welding φ1.-φ1.25mil gold wire;
2. phosphor: the official small chip drive is generally around 20ma, while the inverted power chip drive current is generally around 350ma, therefore, the two in the use of the process of their respective heat difference.
3. solid crystal: small chip using inline bracket reflection cup inside the point of insulating thermal adhesive fixed chip, inverted chip using a higher coefficient of thermal conductivity of silver glue or eutectic process and bracket base connection, the bracket base is usually a high coefficient of thermal conductivity of copper;
4. Gel: small chip heat, the traditional epoxy resin can meet the packaging needs, inverted power chip heat, the need to use silicone packaging.
5. filling molding: chips are usually now filled with epoxy resin glue in the particles, and then the holder is inserted into the high temperature curing; inverted power chips need to be slowly filled with silica gel from the intake hole of the lens. The filling process should improve the operation to avoid bubbles and cracks after baking, affecting the yield.
6. Dispensing: small chip package usually uses the traditional point filling the entire reflection cup to cover the chip way.
7. Heat dissipation design: small chips usually have no additional heat dissipation design.
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