Piranha lamp bead patch is a package, square, transparent resin package, four pins, and there is a missing LED at the negative pole. Piranha is an astigmatism-type LED, with a luminous angle greater than 120 degrees, high luminous intensity, and can withstand greater power. Car brake lights \ turn signals are used more.

Packaging process:

The packaging of the piranha lamp bead has its particularity. First, the bracket of the piranha lamp bead must be selected. According to the number of LED chips to be placed in each piranha tube, it is necessary to determine the shape, size and depth of the bowl punched in the piranha bracket.

When using the stand, clean it and fix the LED chip in the stand bowl. After drying, the two poles of the LED chip are welded, and then the corresponding die is selected according to the number of chips and the size of the light-emitting angle. Fill the mold with glue, and insert the piranha bracket with the soldered LED chip into the mold. After the glue is dry (dry in an oven), it can be demolded. It is then placed on a rib-cutting die to cut it out, followed by testing and sorting. The technical indicators of piranha lamp beads are the same as those of LEDs packaged in other ways. When multiple chips are packaged on a piranha bracket, the related thermal resistance should be considered, and the thermal resistance should be minimized to prolong the service life.

Since the piranha lamp bead has four legs, in order to install the piranha lamp bead on the printed circuit board, four holes should be left on it. Because the two electrodes of the LED are connected to the four legs, the two legs are connected to one electrode. When installing, it is necessary to confirm which two legs are positive and which two legs are negative, and then design the PCB.

The shapes of the piranha encapsulation dies are also varied, including φ3mm round head and φ5mm round head, as well as concave shape flat head shape. According to the requirements of the light emitting angle, various packaging dies can be selected.

The piranha lamp bead has 4 feet, two more feet than the general 5mm LED, and there is a certain distance between the light-emitting part of the 4-foot handle and the welding place of the circuit board. The heat dissipation of the lamp bead is much better than that of the general LED, and the working current that can be passed is a little larger, the maximum can be 40-50MA, and the general LED is 20MA, so the brightness is higher than the general LED.

Piranha lamp beads are getting more and more attention, because they have better heat dissipation, larger viewing angle, less light decay and longer life than φ5mm LEDs. Piranha lamp beads are ideal for line lights, backlit light boxes and light sources in large font slots.

Because line lights are generally used as outline lights for high-rise buildings in cities, and the light box advertising screens of the backlight and the lights with large fonts are placed at high places, if the LED lights are not bright or dimmed, its maintenance is very difficult. Due to the good heat dissipation of piranha lamp beads, compared with ordinary LEDs with a diameter of 5mm, their light decay is small and their lifespan is long, so they will be used for a long time, which can save considerable maintenance costs.

Piranha lamp beads can also be used as brake lights, turn signals, and reversing lights of cars. Because the piranha lamp beads have advantages in heat dissipation, they can withstand a current of 70~80mA. In the driving car, the voltage of the battery often fluctuates greatly, especially when the brake light is used, the current will suddenly increase, but this situation does not have much impact on the piranha lamp bead, so it is widely used in in automotive lighting.