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How to compare LED lights when buying in bulk

How to compare LED lights when buying in bulk

With increasing popularity of LED lighting, many people are confused when it comes to choosing an LED lamp.

First, we should understand that the quality and price of the lamp is composed of four parts is determined: LED chips, LED drivers, heat sink and the printed circuit board (PCB) on.

1. LED chip

One of the two LED lamp most important part of the chip to a wide range of performance standards, so the price will vary according to the manufacturers use different brands of chips. Although high-performance lamp uses CREE or OSRAM; the price may be microblogging for most consumers. Instead, you may want to choose the name of Puri, Samsung or Epistar chip, but the chip results in beautiful color quality 3 Affordable, quality chips.Use, (as a measure of its light color temperature and color rendering index – CRI), and high luminous efficiency (a measure of how to generate a light source of visible light).

Chip length measurement in mm (mils) and 1 millimeter equals one thousandth of an inch. In general, the larger the chip the better the performance. Since the specification and claims, the manufacturer is often exaggerated, it is prudent to determine which components manufactured by the product in question in a lamp used to compare with one another.

Many manufacturers use in indoor lighting SMD LED chips, such as SMD 2835 LED tubes and the SMD 3014 LED panel lights in. These low-power LED production caused a light, easy on the eye less lumens. Put simply, one lumen is the amount of light emitted per second measured. High-power LED lamps for industrial use, because of its small size, the result is a concentrated light, doing an excellent job. Many LED mining lights are equipped with 45X45 square chip and use, and the board (COB) chip package light source.

For your information, the digital 2835,3014,3528,5050,5630 is the name of the packaging process model. Another method uses a very promising future in the aforementioned COB light, wherein the chip directly mounted on a printed circuit board (PCB), rather than the surface mount device (SMD). Since these sources have a variety of functions, we recommend that you take a few minutes to become familiar with them in order to satisfy your requirements.

As you can see, LED package is its performance and management of several closely-related features, including heat, light distribution and color temperature changes and chip.It of CRI is interesting that produce white light with a yellow fluorescent chip powder was added to it to change its original blue light produced in white Plains.

2. LED Driver

The second key component is the power system, commonly referred to as drivers. It is the life of the LED lamp constraints – and there is a myth called the lamp life of a city is up to 30 years; drivers may only last 1000 2000 hours. So ignore the lamp life of 50,000 hours LED manufacturer claims.

A reputable drivers, such as Ming-wai, can be expected with 15,000 hours of battery life. However, the cost will manfactured 80% higher than the average driver in China. Most manufacturers use their own drivers. In this case, it is wise to ask if the capacitance from a reputable manufacturer.

Another sign of life is to provide a warranty.

3. Radiator

LED is temperature sensitive such that the radiator is an important issue. Most cost-effective use of the product and the aluminum heat sink and specification does not really tell us much, there are three projects, we should look at.

A. Thermal conductivity: 6063 die-casting is the most common material. There are better in anodized coating. B. fin number and size: more the better. C. heat pipe in some high-power LED lamps use.

4. The printed circuit board

Materials and printed circuit board design used is important because it connects the chip to the heat sink. PCB heat lamps with low thermal conductivity results. Metal and ceramic core printed circuit board having a good thermal conductivity, but most manufacturers choose fiberglass save money.

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