A circuit board factory usually consists of multiple departments, each responsible for different jobs and functions. The following are several common departments and their responsibilities in the circuit board factory:

1. Production department: The production department is one of the core departments of the circuit board factory, responsible for the production of circuit board products. This department usually includes positions such as production planning, production technology, and production line management. They are responsible for formulating production plans, arranging production processes, and supervising the operation of production lines to ensure that products are completed on time and in accordance with quality requirements.

2. Design department: The design department is responsible for the design and development of the circuit board. This department usually includes positions such as circuit designers, wiring engineers, and packaging engineers. They are responsible for designing circuit diagrams, wiring diagrams, and packaging solutions for circuit boards according to customer needs and specifications.

3. Quality control department: The quality control department is responsible for supervising and controlling the quality of circuit board products. This department usually includes positions such as quality inspectors and quality engineers, who are responsible for formulating quality inspection standards, conducting product quality inspection and testing, and ensuring that products meet quality requirements.

4. Purchasing department: The purchasing department is responsible for the procurement of raw materials and equipment required for circuit board production. This department usually includes positions such as purchasers and supply chain management. They are responsible for negotiating with suppliers, signing procurement contracts, and ensuring timely and stable supply of raw materials and equipment.

5. Sales department: The sales department is responsible for the sales and market development of circuit board products. This department usually includes sales personnel, marketing personnel and other positions, who are responsible for communicating with customers, negotiating orders, developing new market channels, and promoting product sales.

6. Technical support department: The technical support department is responsible for providing technical support and after-sales service to customers. This department usually includes positions such as technical support engineers and customer service personnel, who are responsible for answering customers' technical questions, providing product use guidance, and handling customers' after-sales service requests.

The above are the common departments and their responsibilities in circuit board factories. Different circuit board factories may have some differences, but in general, these departments work together to ensure the smooth production and sales of PCB circuit board products.