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Yuliang Optoelectronic > News > Industry News > the most complete piranha LED module knowledge

the most complete piranha LED module knowledge

  In LED display devices, piranhas are popular LED modules. Piranha LED modules are not only widely used in LED luminous characters, LED light boxes and single-color display, but also have many advantages in the application of LED outdoor advertising display.

 

First introduce the advantages of piranha LED display

The piranhas series display is a three-in-one plug-in lamp between traditional in-line lamps and traditional indoor surface mount lamps. Compared to traditional outdoor 246, 346 in-line lamps, the piranha series 5353 High brightness, excellent white balance, large viewing angles, red and green blue wicks with simultaneous light decay, gold wire bonding, and low failure rates are the biggest highlights of the Piranhas series. The outdoor protection level of the full-color display screen completed by the Piranha 5353 can reach IP65 or more. From the front/side view, the phenomena such as “flowering spots” that the 246, 346, and 546 lamp beads have not solved can be eliminated. The heat dissipation is better than 3528, 5050, and other surface lamps made of three-in-one. According to industry insiders, the market prospects of outdoor triads have been more significant than the traditional inline lamps and surface mounts.

Then introduce what is the LED module

LED module refers to the light-emitting diode (LED) plus current limiting resistor welded to a certain size of the PCB, with DC12V/24V power supply can be connected to bright electronic devices; LED module is mainly used to produce LED signs, light Words and so on.

The

What is Piranha Module

The piranhas module is made up of three piranha LED lamp beads soldered on a circuit board about 1 cm wide, 3 cm, and 7 cm long! (Piranha LED lamp beads are 4 feet, two feet more than the average 5mm LED, and the light part of the 4 feet and the circuit board welding place have a certain spacing, 4 feet design and leave a gap is let Piranha LED heat dissipation is much better than the average LED, can work through a larger current, the maximum can be 40MA, the general LED is 20MA, so higher than the average LED brightness). Why do you call this LED a piranha? Because it's shaped like a piranha in the Amazon. A product named LED luminaire with piranhas was also transmitted from abroad.

LED Piranha Module Introduction

In early 2005, LED piranhas module appeared. Piranha has improved both in brightness and price relative to straw hats. Piranhas have many light angles, such as F5-90 degrees, F3-120 degrees, flat heads-180 degrees, etc. (Different angles are determined by the optical lens of the LED). Users can use different thicknesses of acrylic fonts according to different angles. In general, an angle of 90 degrees requires the thickness of the acrylic word to be 10-15cm, 120 degrees is about 10cm, and 180 degrees is <=8cm. The reason why the piranha module is higher than the straw hat module is that the main reason is that because there are four feet, heat dissipation is relatively good compared to the straw hat, so the 5 MA current can be increased. Piranhas are relatively expensive compared to straw hats, but light decay is still large.

The advantages of LED piranhas

Piranha LED products have many advantages. Because the brackets used for piranhas' LEDs are made of copper, they have a large area, so heat transfer and heat dissipation are fast. After the LED is lit, the heat generated by the pn junction can be quickly exported from the four legs of the stand to the copper tape on the PCB. This LED piranha tube heat transfer faster than φ3mm, φ5mm pin-type tubes, which can extend the life of the device. Under normal circumstances, the heat resistance of piranha LED will be less than half of the thermal resistance of φ3mm, φ5mm pipe, so it is very popular with users.

Precautions for using LED piranhas

When using the bracket, it should be cleaned and the LED chip should be fixed in the bracket bowl. After the drying, the LED chip is welded at two poles, and then the corresponding die is selected according to the number of chips and the angle of light output. Fill the mold with glue, and insert the LED-supported piranha bracket into the mold. After the gel is dry (drying with oven), it can be demoulded. Then it is cut into the cutting ribs and cut, followed by testing and sorting. The piranha LED's technical specifications are the same as those of the other packaged LED's. For multiple chips packaged in a piranha bracket should consider the relevant thermal resistance, thermal resistance should be minimized in order to extend the service life.

Since the piranha LED has four legs, in order to install the piranha LED on a printed circuit board, four holes should be left on it. Because the two electrodes of the LED are connected to four legs, the two legs communicate with one electrode. In the installation to confirm which two legs are positive, which two legs are negative, then PCB design.

The shape of the piranha-encapsulated mold is also varied. There are φ3mm round heads and φ5mm round heads, as well as concave-shaped flat head shapes. According to the requirements of the light angle, various package molds can be selected.

Piranha LED application

The piranha LED has attracted more and more attention because it requires better heat dissipation, larger viewing angles, lower light attenuation, and longer life than φ5mm LEDs. The Piranha LED is ideally suited for use as a linear light, a backlit light box, and a light source in a large font slot.

Because the line lights are generally used as contour lights of high-rise buildings in cities, and the backlight light box advertising screen and large-size lighting are placed high, if the LED light is not bright or dark, its maintenance is very difficult. Because the piranha LED's heat dissipation is good, the ordinary LED with a relative diameter of 5mm has a small light decay and a long life, so the use time will be long, which can save considerable maintenance costs.

The

Piranha LED can also be used as a car brake light, turn signal, reversing light. Because the piranha LED has advantages in heat dissipation, it can withstand 70~80mA. In the exercise car, the voltage of the storage battery often fluctuates greatly, especially when the brake lamp is used, the current will suddenly increase, but this situation does not have much impact on the piranha LED, so it is widely used in automobiles. Lighting.