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3 Main Types of PCB Materials
The primary material used to fabricate PCB (Printed Circuit Board) is of immense importance. It is essential to consider the performance of the material in terms of temperature resistance, adhesion, tensile strength, flexibility, dielectric strength, dielectric constant, and many other physical, electrical, and thermal factors. The performance and level of integration of the PCB is completely dependent on the material used to fabricate the PCB.
Types of Materials Used for PCB Fabrication
There are three major types of materials used for production of PCB:
1. FR-4 : This is the most commonly used material in PCB. It is a glass reinforced epoxy laminate sheet. The epoxy used is flame retardant and water resistant. It provides good strength to weight ratios. The tensile strength offered by this material is very high.
2.PTFE (Teflon): PTFE is a kind of plastic material that does not provide any resistance, thus is used for high speed, high frequency applications. PTFE is extremely flexible, making it invaluable in applications with tight tolerances. It is also extremely lightweight, allowing it to be used across various industries. It is also flame resistant, exhibits high physical strength, provides temperature stability, and is versatile in application.
3.Metal :The traditional materials of copper, aluminum, iron, etc. are still used in PCBs. These materials allow the use of Surface Mount Technology (SMT) for the integration of components. They also provide mechanical durability. Thus, the product life of metal base PCBs is much longer.
The different materials used for the fabrication of PCB, all offer a variety of advantages and disadvantages. The material is chosen according to the application, the result needed, environmental factors, and any other constraints the PCB will face. You should choose the material of the PCB depending on the results that are expected.
4 Advantages and 8 Applications of Aluminum PCB
Stack-layer of Singe Aluminum PCB
It features a thermal clad layer that dissipates heat in a highly efficient manner, while cooling components and increasing the overall performance of the products.
Advantages of Aluminum PCB
1. Environmentally Friendly: Aluminum is non-toxic and recyclable. Manufacturing with aluminum is also conducive to conserving energy due to its ease of assembly. For printed circuit board suppliers, using this metal helps maintain the health of our planet.
2. Heat dissipation: High temperatures can cause severe damage to electronics, so it is wise to use a material that can help dissipate heat. Aluminum can actually transfer heat away from vital components, thus minimizing the harmful effect it could have on the circuit board.
3. Higher durability: Aluminum provides strength and durability to a product that ceramic or fiberglass bases cannot provides. Aluminum is a sturdy base material that can reduce accidental breakage during manufacturing, handling, and everyday use.
4. Lightweight: For its incredible durability, aluminum is a surprisingly lightweight metal. Aluminum adds strength and resilience without adding on any additional weight.
8 Applications of Aluminum PCB
1. Audio device: Input, output amplifier, balanced amplifier, audio amplifier, pre-amplifier, power amplifier.
2. Power Supply: Switching regulator, DC / AC converter, SW regulator, etc.
3. Communication electronic equipment: High-frequency amplifier, filtering appliances, transmitter circuit
4. Office automation equipment: Motor drive, etc.
5. Automobile: Electronic regulator, ignition, power supply controller, etc.
6. Computer: CPU board, floppy disk drive, power supply devices, etc.
7. Power Modules: Inverter, solid state relays, rectifier bridges.
8. Lamps and lighting: As the advocated promotion of energy-saving lamps, a variety of colorful energy-saving LED lights are well received by the market, and aluminum pcb used in LED lights also begin large-scale applications.
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