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Aluminum Core PCBs, or Aluminum Printed Circuit Boards, are a type of printed circuit board that utilizes an aluminum substrate as the base material. This construction provides excellent thermal conductivity, allowing for efficient heat dissipation, which is crucial in high-power applications. The aluminum core is typically coated with a dielectric layer, onto which the circuit patterns are printed, ensuring durability and reliability in various environments.
| Material | Aluminum substrate with dielectric layer |
| Thermal conductivity | Typically 1.0 to 3.0 W/mK |
| Copper thickness | 1 oz to 6 oz |
| Board thickness | 0.8 mm to 2.0 mm |
| Surface finish | HASL, ENIG, or OSP |
When selecting an Aluminum Core PCB, consider the thermal requirements of your application, as well as the copper thickness needed for current handling. Specify the desired surface finish and board thickness based on your assembly process. Certifications such as IPC standards may be relevant, so inquire about compliance if necessary. Additionally, provide information on the quantity needed to ensure accurate pricing and lead times.
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They offer superior thermal management and are ideal for high-power applications.
Yes, but the dielectric material and design must be optimized for high-frequency performance.
With proper use and environmental conditions, they can last several years.
They can be more expensive due to the materials and manufacturing processes involved.
Common finishes include HASL, ENIG, and OSP.
Consult with a PCB manufacturer to review your design for thermal and electrical considerations.