SMD packaging

Surface mount diode (SMD) is a new type of surface mount semiconductor light-emitting device, which has the advantages of small volume, large scattering angle, good uniformity of emission, and high reliability. Its luminous color can be various colors including white light, which can meet the needs of various electronic products with surface mount structures, especially mobile phones, laptops, etc.

SMD packaging process:

There are generally two types of SMD packaging structures: one is metal bracket chip LED, and the other is PCB chip LED. The specific process flow is as follows.

At present, many manufacturers use automated machines for crystal solidification and soldering, resulting in high-quality and consistent products that are very suitable for large-scale production.

Special attention should be paid when producing SMD white LED, as the device volume is small, the use of fluorescent powder is a challenge. Some manufacturers first mix fluorescent powder with epoxy resin to make a mold, and then make a rubber cake of the epoxy resin that has been mixed with fluorescent powder. The rubber cake is attached to the chip, and then filled with epoxy resin around it to make SMD packaged white LED.

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SMD packaging

SMD packaging

SMD packaging process:

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