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Mixed technology PCB assembly refers to the process of creating printed circuit boards (PCBs) that utilize both surface mount technology (SMT) and through-hole technology (THT) components. This assembly method allows for a combination of the advantages of both technologies, such as the high-density capabilities of SMT and the robustness of THT components. The PCBs are typically made from materials like FR-4, a fiberglass-reinforced epoxy laminate, and may include various metal finishes to enhance conductivity and solderability.
| Material | FR-4, polyimide, or other laminates |
| Layer count | 1 to 12 layers |
| Component types | SMT and THT components |
| Minimum trace width | 3 mils |
| Minimum hole size | 0.2 mm |
| Surface finish options | HASL, ENIG, OSP |
When selecting mixed technology PCB assembly services, buyers should consider the specific requirements of their project, including the types of components to be used, the desired layer count, and the material specifications. It's important to specify any necessary certifications, such as IPC standards, and to communicate tolerances for critical dimensions. Additionally, providing information about the estimated quantities needed can help suppliers offer accurate quotes and lead times.
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It is the combination of SMT and THT components on a single PCB.
Common materials include FR-4 and polyimide.
It allows for high-density layouts and robust connections.
Look for IPC standards and other relevant industry certifications.
Consider the complexity of your circuit design and component placement.
Lead times can vary, but typically range from 2 to 6 weeks.