This is the design guidelines for aluminium core circuits, want to know more PCB design guidelines,contact us!

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What is ‘’Aluminum Board”?

Aluminum PCB is the most common type of all Metal Core PCB (MCPCB) also known as IMS (Isolated Metal Substrate). Aluminum Board are a unique metal-based copper clad laminate excellent thermal conductivity, high mechanical strength and dimension stability.

Single-sided PCBs on aluminium base

A copper foil is laminated onto an aluminium base using a prepreg.

Normally, this variant only has drill holes for fastenings.

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Double sided structure with aluminum core

Copper foils are laminated onto both sides of an aluminium core using prepreg. The PCB can be through-plated.

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PCBs on metal heat-conducting sheets

Completed PCBs are press-moulded to an aluminium carrier using a prepreg. Benefit: Multilayers can also be used (only single-sided SMD). Disadvantage: Poor heat dissipation, as the heat has to be dissipated through the entire PCB.

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        Technical data

  • Thickness of the aluminium core: 0,5–2,0 mm
  • Copper thickness: 0.5OZ–8OZ 
  • Thermal conductivity:  Standard materials: 1-3W/m.k, Specified materials : 4-12W/m.k
  • minimum drill hole diameter PCB (PTH): ≥ 0,2 mm
  • minimum drill hole diameter PCB (NPTH): ≥ 1,0 mm
  • minimum drill hole diameter for aluminium: ≥ 1,0mm
  • Min distance Drill to Drill: > 1,0 mm
  • minimum router diameter: ≥ 1,6 mm
  • Surfaces: HAL, HAL free lead, OSP, ENIG (not recommended!)
  • Machining:Produced like standard PCBs in multiples or individually, as well as being milled and scored.
    

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Sophia Zeng
This is Sophia Zeng from Shenzhen

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