LED PCB Board

What Is LED PCBs?

LED PCBs is the core of the LED lighting. A chip creates an electrical connection between LED and printed circuit board, and there has a thermal heat sink to dissipate heat. Because of the well-performance in dissipate heat, the metal core PCBs, especially aluminum PCBs are popular for LED PCB manufacturers. Usually, the aluminum LED PCB has a thin layer of thermally conductive dielectric material that is more efficient at dissipating heat than traditional PCBs.

Advantages of LED PCBs:

  • Well performance for heat dissipating
  • Lightweight
  • Efficient low power consumption
  • Dust and moisture resistant

Applications

LED PCB light has vast applications in different industries because of its low cost and flexible design, and excellent energy efficiency. It usually can be used in industries such as, medical, computer, automotive, and telecommunications industry.

Medical industry: LED PCB lights used in medical examinations are usually high-powered and made of aluminum with the reason of well heat dissipation.

Computer industry: LED PCB lights are widely used in computer industry because it features great heat sensitivity of computer machinery.

Automotive industry: Aluminium LED PCBs can be used for cars on brake lights, indicators, and headlights. This kind of printed circuit board features durability and competitive prices.

Telecommunications: LED PCB lights are always used in telecommunications equipment because of its excellent heat transfer ability.

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LED PCBs Design Guide

LED PCB has widely applications in our daily life from computer to automotive industry. This kind of printed circuit board integrates the LEDs(Light Emitting Diodes) onto PCBs (Printed Circuit Board). Aluminium is the idea material for LED PCB fabrication because of its great heat dissipation, and the high efficiency, low cost, and structural strength make the LED PCB become popular for manufacturing industry.

There are some considerations for high-quality LED PCB fabrication:

1.Create the ideal board design layout

Create the ideal board design layout is the primary step for LED PCB design, because it usually decides the cost and quality of the final PCBs. Specialized LED PCB designer will design professional LED PCB design for customers that can avoid the most defects.

2.Ensure the correct orientation

All the PCBs have a orientation from one entry to one exit or most a few. The orientation is that the electricity and data flow. Might a printed circuit board has more than one orientations, so the professional LED PCB design should ensure all the orientations is from begin to the end.

3.Consider the subject of component placement

Every PCB has its specific use, therefore we should consider the subject that might be needed, such as capacitors, resistors, etc. Besides, LED PCB designers should also consider where to place these components, and avoid arranging them on the solder side of the printed circuit board.

4.Placing components away from the PCB outline

Placing components away from the PCB outline is crucial to help manage the LED PCB board design, and protect the printed circuit board from failing in the future. Besides, if you place the component near the PCB outline might cause theses components dislodge from the board.

5.Placing components according to SMD PCB design rules.

Placing components according to SMD PCB design rules is a good method to fabricate the high-quality LED PCBs and make it efficient, because the SMD PCB is a standard reference to a set of guidelines for PCB manufacturers to make high-quality products.

6.Placing VIAs away from the end of SMT pads.

The VIAs(vertical interconnect assess) allows manufacturers place components onto the printed circuit board between two or more layers. Placing VIAs away from the end of SMT pads is very important to avoid the PCB defect that the solder to migrate leave from the pad and enter the via space. Therefore, create the distance of 0.025 inches is great between the via and the SMT pad.

7.Net width design

We need to definite the net width for the variability of currents.

Types of LED PCBs

Different types of LED PCBs are created for different application, typically, there are 5 types of LED PCBs.

They are flexible LED PCBs, rigid LED PCBs, hybrid LED PCBs, multi-layer LED PCBs, single-layer LED PCBs.

What Causes A PCB to Fail?

Manufacturing defects

There are malfunction of LED PCB might caused manufacturing defects, such as low-quality solder joint connection, material degradation, and contamination. To solute these defects, you should create the right pad-trace, ensure your material is high-quality, and keep clean on the PCB surface.

The second reason why your LED PBC fail is caused by environmental factors. They are heat, dust, moisture, and physical shock.

Non-specific design is also an important reason to make malfunction of your LED PCBs. You should consider in component selection, material selection, PCB layout, and design verification.