We use the Fr4 (glass fiber) as the material of the PCB in the past, but because some products need the PCB for the high heat and fast heat dissipation. We start using aluminum alloy as the PCB material. Aluminum is a low-alloyed Al-Mg-Si series high-plasticity alloy plate, which has good thermal conductivity and electrical insulation Performance, and machining performance. The aluminum substrate can withstand voltage up to 4500V, and the thermal conductivity is higher than 2.0. So it can help you to improve the thermal diffusion when you make the PCB design, and it can reduce the product’s operating temperature, increase the product’s reliability and lifetime.
What’s the stack-up of different Aluminum PCB?
The aluminum substrate is a metal-based copper-clad laminate with a good heat dissipation function. The single-layer Alu PCB is composed of a three-layer structure: circuit layer (copper foil), insulating layer， and metal base layer, see below stack-up for your reference:
We also designed a double-sided single-layer board and multilayer Alu PCB for the high-end usage
Aluminum Base Board PCB Capability:
|Board Classification||Aluminum Base, Copper Base, Ceramics Base, Copper-Clad, Combined Bade Board|
|Material||Domestic Aluminum, Domestic copper, imported aluminum, imported copper|
|Layer Count||Single-sided printed board/Double-sided printed board|
|Warp and twist||<=0.5%(Thickness:1.6mm,Board Size:300mm*300mm)|
|Min.punching Hole||1.0mm(Board thickness below1.0mm)|
|Min Hole Diameter||0.6mm|
|Min.Solder Mask Opening||0.35mm|
|Single Sided aluminum based board||Double sided aluminum based board||Single sided copper based board||Double sided copper based board||Ceramic based board|
|Prototype||5 Working Days||14 Working Days||9 Working Days||16 Working Days||8 Working Days|
|Mass Production||8 Working Days||17 Working Days||12 Working Days||19 Working Days||11 Working Days|
|MP in repeat order||7 Working Days||16 Working Days||11 Working Days||18 Working Days||10 Working Days|
What’s kind of field you can use for the Aluminum PCB
1. LED: Different kinds of LED and Lamps
2. Audio equipment: input and output amplifiers, balanced amplifiers, audio amplifiers, pre-amplifiers, power amplifiers, etc.
3. Power supply: Switching regulators, DC/AC converters, SW regulators, etc.
4. Communication electronic equipment: The high-frequency amplifier `filtering appliance` transmission circuit.
5. Automation equipment: Motor drivers, etc.
6. Automotive: Electronic regulator, igniter, power controller,
7. Computer: CPU board, floppy disk drive, power supply unit, etc.
8. Power module
9. Inverter, solid-state relay, rectifier bridge, etc
Keep your Aluminum PCB in a dry and dark place. You should use your PCBs in 48hours once you open the vacuum package
MAJOR MATERIAL SUPPLIER:
|Naya Metal||Copper||Dongguan China|
|Shengyi||Copper Clad Laminate||Guangdong China|
|Guangxin||Solder Mask||Guangzhou China|