Multilayer PCB

Multilayer PCB is a circuit board that has more than two layers. Unlike a Double-Sided PCB which only has two conductive layers of material, all multilayer PCBs must have at least three layers of conductive material which are buried in the center of the material.

Benefits of Multilayer PCBs

• Higher assembly density
• Smaller size (considerable savings on space)
• Increased flexibility
• Easier incorporation controlled impedance features.
• EMI shielding through careful placement of power and ground layers.
• Reduces the need for interconnection wiring harnesses (reduces overall weight)

Applications of Multilayer PCBs

While the weight and space benefits of multilayer PCBs are especially valuable for Aerospace PCBs, multilayer PCBs are also beneficial to applications where "cross-talk" levels are critical. These are a few other the applications using multilayer printed circuit boards:

• Computers
• File servers
• Data storage
• Signal transmission
• Cell phone transmission
• Cell phone repeaters
• GPS technology
• Industrial controls
• Satellite systems
• Hand held devices
• Test equipment
• X-ray equipment
• Heart monitors
• Cat scan technology
• Atomic accelerators
• Central fire alarm systems
• Fiber optic receptors
• Nuclear detection systems
• Space probe equipment
• Weather analysis