What's the Multilayer PCB Board

A Multilayer PCB (Printed Circuit Board) is a type of circuit board that has more than two layers of conductive copper separated by insulating material (called dielectric). These layers are stacked together and laminated under heat and pressure to form a single rigid board.

• Layer Structure:

  • A simple PCB has one or two layers (single-sided or double-sided).

  • A multilayer PCB typically has 4, 6, 8, 10, or more layers of copper.

  • The inner layers are signal, power, or ground planes, connected through vias (plated holes).

• Space Saving: By stacking multiple layers, designers can pack more circuits into a smaller area, making the board more compact.

• Improved Performance: Multilayer PCBs reduce electrical noise, crosstalk, and EMI (electromagnetic interference) because ground and power planes can shield signal layers.

• Design Flexibility: Multiple layers allow more complex routing for high-speed circuits, microcontrollers, RF devices, and computing hardware.

• Consumer electronics: smartphones, tablets, laptops.

• Medical devices: imaging systems, monitoring equipment.

• Automotive: ADAS systems, infotainment, EV battery management.

• Industrial equipment: robotics, control systems.

• Telecommunications: servers, routers, 5G equipment.