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What is LED PCB
- An LED PCB is a printed circuit board designed to mount light-emitting diodes (LEDs). When LEDs are illuminating, they generate a lot of thermal, and you should know LEDs are temperature-sensitive components. How to protect LED chips from over-heat? We use PCBs. LED PCBs not only support LED chips. More importantly, they dissipate thermal quickly so that the LEDs work efficiently.
- Metal can dissipate thermal quickly, so LED PCBs are usually designed to be aluminum or copper-substrate. But why does the thermal conductivity range of aluminum LED PCBs fall within 1W/mK to 9W/mK from PCBONLINE? Because between the aluminum substrate and the copper circuit layers must be an adhesive layer to insulate them, which reduces the LED MCPCB's thermal dissipation.
- Besides LED MCPCBs, PCBONLINE provides relatively new LED PCBs - ceramic substrate LED PCBs, glass substrate LED PCBs, flexible LED PCBs, and even clear flexible LED PCBs and flexible aluminum LED PCBs.
- If you make aluminum or copper LED PCBs, your design focuses on thermal dissipation and cost-effectiveness; if you make flexible LED PCBs, your design focuses on flexibility; if you make ceramic LED PCBs, your design focuses on thermal dissipation, flatness, and anti-oxidation.
- PCBONLINE fabricates and assembles LED PCBs. Besides, We can design the LED PCB and end products according to your specification requirements, such as lumen, wavelength, color temperatures, power, etc.
How are LED Chips Assembled on PCB
LED chips are diodes that have a PN junction and allow electrical current to flow only from the positive electrode to the negative electrode. LED chips are assembled on PCBs in these two ways from PCBONLINE:
● Chip-on-board (COB) LED: LED chips are bonded on PCBs. PCBONLINE grapes two COB LED technologies.
One is LED wire bonding - we use gold wires to connect LED chips to the PCB then use glue to seal the LED chips.
The other is flip-chip bonding - without gold or aluminum wires, we flip the LED chip and let the PN junction directly bond the positive and negative electrodes on the PCB. Then we use glue to seal the LED chips. Our LED flip-chip assembly machine is specifically used.
● LED surface mount (SMT) assembly: SMD LEDs are picked and placed on PCB pads and then reflow soldered.
PCBONLINE has mature LED assembly lines in our PCB assembly factory in Shenzhen. You can have COB and SMD LED PCBs manufactured and assembled at one stop by PCBONLINE.
Note: Driver-on-board (DOB) LED is not an LED assembly technology but an LED PCB design option. Without AC/DC, EMC circuit, DOB LED products adopt the linear IC drive solution on the PCB. If your design is DOB LED, we can also manufacture and assemble PCBs for you.
Types and Advantages of LED PCBs
- According to different LED PCB materials, there are aluminum LED PCBs, FR4 LED PCBs, copper LED PCBs, ceramic LED PCBs, glass LED PCBs, and polyimide and polyester LED PCBs.
- According to the rigidness of the LED PCBs, there are rigid LED PCBs, flexible LED PCBs, and rigid-flex LED PCBs. PCBONLINE provides all types of LED PCBs, and we provide EMS LED light manufacturing to meet your demands.
- LED PCBs have many advantages, like:
- ● Good thermal dissipation. LED PCBs rely on either the PCB substrate or special circuit design to quickly transfer heat from LED chips.
- ● PCB design flexibility. You can design the PCB to be metal-substrate, flexible, ceramic-substrate, FR4-substrate, etc.
- ● High reliability. LED PCBs well protect LED chips from over-heat, and usually, LED products have a long lifespan.
