Chip LED 20W 220V Driverless AC Input

Guangmai LED is proffesional in making the Chip LED 20W 220V Driverless AC Input. 

How to reduce the junction temperature of the COB LED light source?

One of the most important factors affecting the life and light efficiency of the LED planar light source (COB planar light source) is the junction temperature. The junction temperature of the LED planar light source (COB planar light source) refers to the temperature of the P-N junction of the light-emitting layer of the LED planar light source (COB planar light source) integrated LED chip. The core of the LED junction temperature is to solve the problem of heat dissipation capability. The junction temperature of the LED planar light source (COB planar light source) is related to the following factors: chip structure, package thermal resistance of the LED chip itself, thermal resistance of the secondary heat sink (especially the thermal resistance of the lamp), thermal conductivity and heat dissipation of the radiator The size of the area, the thermal resistance of the interface between the planar light source module and the secondary heat sink, the thermal resistance of the aluminum substrate (or ceramic substrate) of the COB planar light source, the structure of the lamp, the rated input power and the ambient temperature of use.

 

The lower the junction temperature of the LED planar light source (COB planar light source), the longer the service life. Based on the comprehensive consideration of the light efficiency and life of the LED planar light source module, regardless of the power, the most ideal method is to control the junction temperature of the LED planar light source below 60°C. To solve the heat loss ability is to reduce the junction temperature, and the methods to reduce the temperature rise are:

 

1. Improve the electro-optical conversion efficiency of the LED chip, and convert as much input power as possible into light energy.

 

2. Reduce the resistance between the LED chip and the peripheral luminaire heat sink, thereby improving the heat dissipation capacity of the LED chip and the peripheral luminaire.

 

3. Reasonable space design of lamps, the selection of shell materials and COB plane light source substrate materials, the purpose of which is to reduce the thermal resistance of the LED plane light source (COB plane light source).

GMKJ COB LED list:

20W COB LED Chip Power LED White Color Product Specification

Typical Electrical & Optical Characteristics ( Ta = 25°C)

Package Dimension

Application

LED planar light source (COB planar light source) is energy-saving and environmentally friendly, multi-core integrated package on aluminum substrate or ceramic substrate. Its low thermal resistance, good heat dissipation effect, low cost, simple and convenient installation, uniform light and no light spots, etc., are favored by home and commercial decorative lighting.

 

It is mainly used in clothing spotlights, counter lighting, jewelry lighting, medical instrument lighting, home decoration lighting, etc., which require soft and enjoyable light sources.

 

Application venues: shopping malls, interiors, clothing, cabinets, living rooms, aisles, hotels, bedrooms, kitchens, etc.

 

Application lamps: T5/T8/T10 fluorescent tube, bulb lamp, down lamp, wall lamp, ceiling lamp, Par lamp, ceiling lamp, reading lamp, spot lamp, jewelry lamp, plant lamp, table lamp.

About Guangmai LED

Founded in 2009, Shenzhen Guangmai Technology Co., Ltd. is an enterprise dedicated to the R&D, production and sales of LED packaging device products. The company's business mainly focuses on LED chip packaging light-emitting products.

The main direction of the company’s products are various customized products such as indoor and outdoor lighting COB surface light sources, car lamp light-emitting modules, projection integrated light sources, etc., and persistent in the research and exploration of new materials and new technologies in this field, making the company’s products Technical indicators such as photoelectric parameters, reliability, and reliability maintain a leading position.

Datasheet:

Chip LED 20W 220V Driverless AC Input datasheet can be download from this page. 

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