SMD type LEDs are light sources that have the characteristic of being installed in circuits mounted directly on an electronic board. These circuits are perforated to allow the passage of the electrodes, the soldering of which is carried out on the lower face of the base. These are components in which the electrodes do not protrude downwards, but come out of the sides of the chip. They are characterized by their flat shape: the lower part is soldered directly onto the electronic board, while the electrical connections are lateral. In this way, it is possible to use printed circuits on an insulating base of reduced thickness and carry out micro welding with automated machinery. This type of LED looks like a tiny box with one face from which the light is emitted, the opposite face acting as a support base, while the remaining lateral faces are equipped with an anode and cathode. In the past they have been used in miniature circuits, such as those of cell phones, thanks to increasingly higher luminous efficiency. Today they are widely used in the creation of LED luminaires for general lighting. This type of LED normally has a light output of 120 degrees and is typically used, for example, in the production of LED strips .
This is essentially a really interesting family of LED diodes since today it finds a great application both in the creation of LED strips and in the creation of LED luminaires and especially where high efficiency and the achievement of very high lumens together with control of the very precise light distribution (LED luminaires for public, industrial, cultivation lighting, etc.). SMD Screen are also a family of LED sources that allow the achievement of high standards of reliability and durability thanks to the possibility of fragmenting the power of the luminaire into a plurality of diodes to be powered with voltage generally in the order of milliampere (mA) (for for an in-depth analysis of the thermal management of SMD LEDs in relation to COB LEDs, we invite you to read this dedicated article ).
SMD LED: CHARACTERISTICS OF THE DIFFERENT TYPES
The recalled SMD LED source models all have peculiar characteristics that justify their existence. As is intuitive from reading the table, the name of each model corresponds to the dimensions of the chip expressed in millimetres. Here we will delve into the most popular models, as well as the most high-performance and professional ones that can be effectively used in general lighting.
3528 AND 2835 SMD LEDS
3528 SMD LED
3528 SMD LED
The SMD 3528 diodes represent the older models and are characterized by a light output that is not particularly high. The 3528 diodes are therefore mostly used in decorative lighting and are characterized by their low cost.
· 2835 SMD LED
· 2835 SMD LED
SMD 2835 diodes , on the other hand, are more recent and have enjoyed excellent diffusion on the market thanks to their greater efficiency and the possibility of creating LED strips with a good density of diodes. Precisely this last aspect is fundamental when you want to create a luminous effect of continuous light and avoid the unsightly “dots” or “dotted” effect , which is inevitable where SMD diode models characterized by a density of diodes per meter of less than 120 are preferred. LEDs 17.3W/m (168 LED/m), 20.2W/m (240 LED/m) with high color rendering (CRI>95) up to the brand new and very bright 25W/M (120 LED/m) LED Strips of 170lm/W and 4250lm/m with efficiency levels at the top of the market.
· 5050 SMD LED
· 5050 SMD LED
· 5050 SMD LED
SMD 5050 LEDs are among the first diodes capable of expressing adequate power for general lighting needs. The LED strips that mount them, however, sometimes have the drawback of having a low number of diodes per meter (generally 30 or 60 per metre) and this inevitably leads to the unsightly “dotted” or “dots” effect due to the excessive separation between diode and diode. The available powers generally range from 9.6W/m to 28W/m.
· 5630 AND 5730 SMD LEDS
· 5730 SMD LED
· 5730 SMD LED
The 5630 and 5730 SMD diodes have in common their recent development and great brightness. These are LED diodes suitable for use where high lumens are required. today surpassed by the significantly superior performance of the 2835 LED strip of 21.6W/m with a density of even greater LED diodes (168 LEDs/m) and an efficiency level higher than 146lm/W (with a flux at 4000K Ra>80 equal to 3150 lumens per meter).
· 2110 SMD LED
The SMD 2110 LED diodes are among the most recent and in addition to their excellent brightness, they have the particularity of being able to be mounted very close together, almost eliminating the space between diode and diode. The result obtainable from these strips is a beautiful continuous light effect even if mounted on aluminum profiles with a transparent or extra transparent refractor. This Outdoor SMD screen model allows you to even exceed 700 diodes per meter!