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How To Solve The Heat Dissipation Problem Of UV LED?


When the LED light source is turned on, the P-N connection area within the chip begins to function, generating and accumulating heat. Whenever the state achieves a stable condition, the temperature is referred to as the junction temperature.

Also, because the chip has been encased, the heat of the semiconductor cannot be directly checked during the measuring procedure. As a result, the warmth of the pin conductor is commonly used to infer the temperature difference of the source of light indirectly. The lower the light source's junction temperature, the better its heat dissipation.

How To Solve The Heat Dissipation Problem Of UV LED? 1

Typically, the material chosen for the light source semiconductor and the packaging shape it takes has a direct impact on the heat dissipation of the LED light source.

The materials used for the LED light source get a certain electrical resistance to the inside and outside. The magnitude of these resistivity values reflects the light source's heat dissipation capacity to some extent.

The Heat Dissipation Problem

Heat dissipation is a type of energy dissipation (energy transfer). The term "energy dissipation" refers to energy wasted due to temperature differences and inefficiencies.

Heat is dissipated through three processes:

· Convection is the process of heat by flowing fluids. A convection oven, for example, uses air (a heated, moving fluid) to transmit heat.

· Conduction is the process by which heat is dissipated throughout one material and perhaps into another material that would be in touch with the heated substance. An electric cooktop heated by electrical resistance is one example.

· Radiation is the process through which heat is dispersed using electromagnetic waves. The microwave oven is an example of heat dissipation.

· Using the appropriate insulation for the application decreases heat loss and its costs while also boosting efficiency and safety.

How to solve the heat dissipation problem

To capture the maximum degree of the UV-LED source of light that remains below the significance threshold of the chip for an extended period at ambient temperature, it is important to implement safe and dependable thermal performance for the UV-LED source of light. UV-LED light source heat management may usually be divided into two linkages. Chip packing materials and packing procedures are being improved in the light source production sector to improve heat dissipation efficiency.

However, adding exterior radiators in engineering applications can significantly improve heat dissipation performance. The radiator structure is varied, including fin type, heat exchange type, power sharing plate type, and micro-grooves type, among others.

To obtain the maximum heat of the UV-LED source of light that remains below the significance threshold of the chip for an extended period under ambient temperature, it is important to integrate safe and dependable temperature control for the Ultraviolet light source.

UV-LED light source heat dissipation design can be split into chip level, packaging level, and system level. The source of light in the manufacturing process determines the first two. The study focus of this paper is on the scheme heat dissipation issue, that is, optimizing the construction of the Ultraviolet light source's auxiliary heat sink.

What is the LED junction temperature and why does it matter?

Junction temperature at the point where the LED die meets the material it is mounted on. This junction typically has the device's greatest temperature, making its value a good indicator of heat dissipation efficiency. Conducive heat channels are built into modern LED packages to transfer heat from the intersection to the solder site. The LED package's interaction with the PCB or a separate heatsink is where the solder connection is situated.

The internal thermal resistance of the LED serves as a measure of the efficiency of internal heat routes. Thermally speaking, the LED's quality increases with decreasing internal temperature. The value of heat capacity must be accessed by the design engineer while creating an LED fixture from the a thermal management standpoint. CFD solvers will utilise this figure to precisely calculate the LED's temperature and check whether the device has gone above the manufacturer-recommended upper limit. Junction temperatures in contemporary LEDs typically reach 100°C or higher. Its value is affected by the temperature range, the heat transfer rate between the LED circuit and its surrounding, and the chip's power consumption.

How To Solve The Heat Dissipation Problem Of UV LED? 2

Thermal Design Factors

Any LED bulb must be made to reduce high thermal stability from the LED to a surrounding air in order to keep LEDs cool. Conduction, convective, and thermal radiation are the two types of heat dissipation that must be taken into account and optimised during the entire fixture design process.

1. LED width and configuration

To create small LED fixture designs, designers frequently wish to shorten the distance between Led on a PCB. But this will result in a higher thermal power density, which will enhance the heat of the LEDs.

UV LED manufacturers frequently offer a suggested distance between LEDs and specify the temperature increase that can be anticipated when that distance is shortened by a specific amount. Studies on LED board layout have revealed that homogeneous and symmetrical chip arrangements provide a same amount of heat output whether they are rectangle, hexagon, or circular.

2. Choosing LED Module

Direct in-line packaging (DIP) LEDs and the newest multiple chips on boards (MCOB) LEDs are just a few of the many different types of LEDs available. DIP LEDs are used mostly for signs and display on domestic gadgets. They are distinguished by their bullet-shaped form.

SMD LEDs are square semiconductors that can produce light over the entire RGB spectrum.

How To Solve The Heat Dissipation Problem Of UV LED? 3

Where to buy high-quality UV LED

A creative and experienced manufacturer, Zhuhai Tianhui Electronic Co., Ltd. is focused on UV LEDs, large-scale projects, UV LED packaging, and integrated circuit production of high luminescence, high efficiency, light brightness, and long life. As one of the leading excessive uv led manufacturers in China, we put a great premium on meeting the needs of our clients and are dedicated to offering superior service. We provide consumers with excellent UV LED Solution, products, and services. We offer UVA, UVB, and UVC products with short to long wavelengths as well as full uv led diode LED specs with low to high power. One of the top UV LED producers, Zhuhai Tianhui Electronic Co., Ltd., concentrates on UVC, UVB, and UVA disinfection and sterilization. The goods are widely utilized.

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