SMD 3528 LEDs and features of their application

SMD 3528 LEDs and features of their application SMD 3528 LEDs for home - characteristics

There are super-bright SMD 3528 LEDs for home, and this the first generation, on the basis of which the first LED strips were made. In the article, you will learn about what it is, what types of lamps are, and where and how exactly they are used. The technical properties of diodes, their design features, advantages and disadvantages, wiring diagram, and also how to choose the right design are described in great detail.

What is this? An LED is a semiconductor light source that is capable of emitting light when an electric current passes through it. But electrons in a semiconductor begin to recombine with electron holes, creating energy in the form of photons.

This effect is often referred to as electroluminescence.

The shade of the glow (which will correspond to the energy of the photons) will be determined by the energy that the electrons need to cross the semiconductor's band gap.

General information

But snow-white light is obtained using certain semiconductors or even a layer of a light emitter of a phosphor (this is a chemical that converts the received energy into light emission ). The SMD is the device required for SMT surface mounting. SMT, on the other hand, is a manufacturing method for electronic circuits, in which components will be mounted or placed on the plane of printed circuit boards.

An electronic device made in this way is called a surface mount device. In the industrial field, this technology has largely replaced the through-hole design method that was involved in assembling elements with lead wires in board holes.

Where and how to use them

LED strips are made on the basis of 3528 LEDs. They are also used as indicators of various devices, road signs, kitchen, bedroom, hallway lighting. They are actively used to illuminate architectural objects, stands in a museum, as well as advertising signs and shop windows.

Together with LED Gauss lamps, they bring variety and quality to lighting.

Design features

The device parameters are as follows:

Next, let's talk about the parameters.


SMD 3528 specifications

The properties of 3528 LEDs are as follows:

  1. Light Emitting the crystal is made on the basis of InGan (gallium nitride, also indium nitride) and a compound of aluminum, indium phosphate and gallium.

  2. Characteristic of 3528 snow-white diodes (from 2800 to 7000 K).
  3. The light flux is produced in the range of 5 ... 11 lm.

  4. The luminous efficacy is 40 lm / W.
  5. There is no heat dissipation at all.
  6. Angle of scattering 90.
  7. Area of ​​light emission 4.5 mm.

  8. Working temperature from -40 to +87 degrees.
  9. Brightness will vary greatly with temperature.
  10. By actively using a light diode at a temperature of +65 degrees, you can reduce the brightness by more than 10%. At a temperature level of +80 degrees, it will decrease by 25%. This is one of the obvious reasons why all semiconductor devices require high quality cooling.

    all white LEDs, including 3528, are binned. This is a process of dividing ready-made light emitting devices into groups in the serial production of light-emitting diodes. The bin code will be indicated when marking. It will remain the same for the entire production batch. The exact coordinates of the color bin are determined from the color temperature and that of the skin.

    A chromaticity bin has 3 positions of numbers and letters, and a light flux bin has two. For this purpose, for example, in the high-brightness LED SMD 3528, each manufacturer specifies a chromaticity diagram.

  11. The dissipation power is 100 mW.
  12. Forward voltage is from 2.8 to 3 V.

  13. The maximum operating current is 24 A.

Next, consider the properties of the tape.

Characteristics of LED strips 3528 60 LED

So, the parameters are as follows:

  • The technical characteristics of the LED strip SMD 3528 will indicate the number of diodes per 1 meter, and there may be 30, and 60, and 72, and even 120.
  • If it is written that 300 diodes have been supplied, then there is a tape length of 5 meters. It is required to divide everything by 5, and this will result in 60 diodes per meter.

  • It is required for outdoor (i.e. outdoor), and for use in buildings as well as indoor. Thanks to the excellent IP 54 protection standard, it can also be used in rooms with increased moisture levels. The light can be controlled by means of a special RGB controller.

  • The light flux per meter is 270… 450 ml. This would be equivalent to a simple 30W light bulb.
  • Power consumption is 4.8 W per meter.
  • The operating voltage can be 12 V.

    SMD 3528 hardly heats up, which means that it can be glued without an aluminum profile. Very often, unscrupulous manufacturers install resistors with lower resistance to increase the brightness of diodes, which limit the electric current. As a conclusion, the light will turn out brighter, but the lifespan is greatly reduced.

  • The tape can be cut every 5 cm and will contain 3 LEDs.
  • In the RGB tape in each module of three LEDs, either one or two can light up.

    The rest will be waiting for their glow. When yellow color is received, two elements will light up at once - red and green.The third diode will remain inoperative, and due to the low degree of power, as well as a small number of light diodes, dips and spread of light spots are inevitable. The backlight stripes may not be solid. To avoid this, it is recommended to use light diffusers.

  • But such a light diode 3528 is the most economical of the LED strips due to its low electrical energy consumption. To illuminate the ceiling with a total length of approximately 20 meters, a power supply unit is required, which have a power of 100 watts. Also, the tape is perfect for highlighting stage costumes. Small pieces of tape can be safely powered from batteries.

Next, you need to consider the schematic connection of light diodes.

Schematic diagram for connection

To be able to connect the LED to a regular 220 V network, a driver is required, which will play the role of a stabilized current source ... There are two types of LED driver circuits:

  • On a capacitor.
  • Expanded using stabilizer chips.

The assembly process directly for the driver on the capacitor is not difficult. This will require a minimum number of elements and a little time. Due to the high-voltage type capacitor, the voltage of 220 V will decrease. Then it will straighten and stabilize. It is used in low cost LED lamps.

The main disadvantage will be the high level of light pulsation, which has a negative effect on human health. The circuit is very difficult to calculate due to the scatter of characteristics of electronic components.

The parameters of the SMD 3528 LEDs should be taken into account, because the improved circuit with the presence of specialized microcircuits significantly improves the stability directly at the output of a device such as a driver. With excellent control over the load, the driver does not allow the ripple factor to exceed 10%. The driver can also be taken from a light bulb that is out of order.

If there is a stabilizer, you can easily adjust the strength of the electric current. It is allowed to add more resistance to the technical properties of the driver microcircuit or even remove one of the resistors. This way you can get the required current strength. The simplest circuit of an electric current stabilizer specifically for light diodes consists of a microscopic circuit LM 317, as well as analogues of such a model. The strength of the electric current at the output can be from 0.

1 to 5 A. There are, however, a couple of disadvantages - a low level of efficiency and a fairly strong heating.

Please note that when connecting in parallel, it is strongly recommended to use a separate resistor for all LED circuits. You can also put one powerful resistance on several LEDs.

What are the varieties

Consider all types:

  • SMD 3528 LEDs and features of their application There are improved versions of the SMD 5050.

    They have a low degradation rate (no more than 4%) after about 3000 hours of operation. The maximum temperature level of the crystal can reach +110 degrees.

  • Formation of tri-color RGB diodes.
  • The SMD 5730 LEDs have an improved crystal with a light output of 158 lm / W.
  • The color temperature range is slightly higher than that of SMD 5328, and also varies from 3000 to 7500 K.

    Today, they are considered the most powerful.

A little about the pros.

Advantages and disadvantages


  • Low consumption of electrical energy.
  • Affordable cost.
  • No ripple or flicker.

  • Slight heating.

Cons :

  • Weak power, in comparison with further versions.
  • Gradual crystalline degradation.
  • Manufacturing defects

There is one more important question.

How to choose

So, keep in mind that the packaging must be clean, dry and not damaged.

Also, there must be a barcode, or QR code. In addition, all functions, features, options and specifications are listed on the packaging. Please note that certain unscrupulous manufacturing companies practice the use of chips with small dimensions with the same dimensions of the case itself. In this case, the brightness and power of such samples is much lower than that of the products of the original type.

Please note that SMD 3528 LEDs are an economical, affordable and highly safe option in order to implement a wide variety of design, domestic and building solutions.

Due to the low level of electrical energy consumption, such light sources will shine for a very long time, and together with the lamp they create an unforgettable atmosphere.

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