As you know, LED PCB light is widely used in nowadays,but they will generate a lot of heat during operation.It will descrease the LED’s lifetime, so the cooling is becoming more and more important. How to meet the cooling? Aluminum PCBs and other metal base core PCBs can work it, like copper base,iron base and so on.
It’s a good choice to select metal core if your projects heat much during operation.Let’s see the difference between metal core base PCBs and FR4 base PCBs.
1. Thermal conductivity.
Currently, for many double-sided PCB or Multilayer PCB with high density and power, it’s a challenge for heat emitted. The normal PCB raw material such as #FR4 and CEM3 have poor thermal conductivity and inter-layer insulation，It’s hard to disperse the heat during operation, the heat may cause the work of PCBs. Aluminium PCB have excellent thermal conductivity and they could be a quite good cool solution.
2. Thermal expansibility
Expand with heat and contract with cold is a feature of object, The CTE(coefficient of thermal expansion) is different with different objects. The Z-axis of CTE vary greatly between hole wall with plated copper and connected insulated wall for normal FR4 PCB, the metal hole maybe crack if the heat couldn’t be removed in time., so that it will cause the issue of reliable. MCPCB can effectively deal with the heat and the problems of thermal expansion and contraction, improve the durability and reliability of equipment.
3. Scale stable
Compare with FR4 PCB, the scale of metal core pcb is much more stable. Aluminum PCB, heated from 30℃ to 140~150℃, the scale changes only from 2.5 – 3%. So the metal PCB is more suitable to work in the condition of high temperature.
We are a professional PCB factory which offer metal core PCB with pretty competitive price and excellent quality . Please feel free contact to us if you have any inquiry.