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Double layer PCBs are printed circuit boards that consist of two conductive layers separated by an insulating material. These boards are typically made from materials such as fiberglass or epoxy resin, which provide durability and electrical insulation. The two layers allow for more complex circuit designs compared to single-layer boards, enabling a higher density of components and improved performance in electronic devices.
| Material | Fiberglass, epoxy resin, or polyimide |
| Layer count | 2 layers |
| Thickness | 0.4 mm to 2.0 mm |
| Copper weight | 1 oz to 3 oz per square foot |
| Surface finish | HASL, ENIG, or OSP |
| Minimum trace width | 4 mils to 10 mils |
| Minimum hole size | 0.2 mm to 0.5 mm |
When selecting double layer PCBs, consider the specific requirements of your application, such as material type, thickness, and copper weight. It's important to specify the desired surface finish and any necessary certifications for your industry. Additionally, provide details on trace width and hole sizes to ensure compatibility with your components. Quantities can also affect pricing and lead times, so be clear about your needs.
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Double layer PCBs allow for more complex circuit designs and higher component density.
Fiberglass and epoxy resin are the most common materials.
Thickness typically ranges from 0.4 mm to 2.0 mm.
Yes, they can be designed for high-frequency applications with appropriate materials and layout.
Common finishes include HASL, ENIG, and OSP.
Copper weight is based on the current carrying requirements of your circuit.