FR4 vs metal core PCB: FR4 is a multi-layer metalized circuit board that is widely used in automotive, audio, motor control, and power conversion. It is also a great choice for PCB applications where heat dissipation is important. Unlike most other PCB substrates, FR4 is a very cost-effective alternative to metal core PCB. Its heat dissipation properties and ease of use make it a good choice for a wide range of applications.
Designing a multilayer board
Creating a metal core multilayer board is a great way to improve thermal conductivity and performance. These PCBs can also be used for applications with high heat loads. They can provide fast heat dissipation away from electronics.
The most common materials for metal core PCBs are aluminum and copper. Both are inexpensive and recyclable. They are also more efficient at thermal management. The copper layer has better thermal conductivity than aluminum.
While designing a metal core multilayer board, it is important to know the differences between the different base materials. The thickness of the base material affects the conductivity and resistivity of the circuit. It is necessary to use the proper thickness of the base to ensure optimal performance.
Besides copper, aluminum is another popular choice for the conductive layer. In most cases, the base material is one to four mm thick. The thickness is dependent on the application and the customer’s requirement.
Heat dissipation properties
Printed circuit boards (PCBs) are used to create electronic devices, such as computers, TVs, radios, and mobile phones. These products are designed to be durable and able to withstand high temperatures. However, heat dissipation in PCBs can be an issue. It is important to choose the right material for the board to avoid component overheating.
Metal core PCBs are a great solution to thermal problems in advanced circuits. They offer better thermal conductivity, higher power density, and better electromagnetic shielding. Typical applications of metal PCBs include LED lighting systems and power circuits in automotive environments.
Metal PCBs are made with a metallic base, a dielectric layer, and fillers. The thickness of the base varies from one to four millimeters.
Aluminum is the most common metal for the metal layer, and it is also the least expensive. Aluminum has good thermal conductivity, making it an ideal choice for a PCB.
The thermal conductivity of a metal PCB can be measured in Watts per meter Kelvin, or W/mK. The higher the thermal conductivity, the faster the heat can transfer.
Widely used in automotive, audio, motor control and power conversion
Discrete field effect transistors (DFETs) are used in almost every low voltage application imaginable from power conversion to solid state lighting. Their small size and low cost make them suitable for the plethora of devices found in modern internal combustion engine powered vehicles. Although they are not the most efficient transistors around, their ability to carry a massive amount of current makes them the powerhouses of the industry. Their biggest drawback is the thorny issue of thermal efficiency. Fortunately for motorists, Toshiba has a large number of DFETs that meet and exceed customer specifications.
Toshiba is also a major player in the automotive powertrain space. Their inverters and motor ASSPs are designed to the specifications of their customers. Their newest offerings include the 6EDL7141 which is an elegantly crafted solution for the aforementioned BLDC motor control. They also have an extensive line of stepping motor drivers for the discerning motor tinkerer.
FR4 vs metal core pcb
Compared to conventional FR4 printed circuit boards, metal core PCBs are better for heat dissipation. This kind of board features a layer of metal and a dielectric material, which help in transferring heat away from the critical components of the circuit. It also improves the lifespan of the product.
These types of boards are mostly used in automotive systems, LED lighting, and motor control in electric vehicles. They are also considered as a good solution for high power applications. Using a PCB with excellent thermal conductivity can increase the life of the product.
Unlike FR4, metal core boards are not dependent on vias for the transfer of heat. Instead, they are able to redirect the heat away from the board’s key components, and to the air. This helps in preventing damage to the circuit.
In addition to this, these boards have a higher thermal conductivity. They can handle high temperatures and are a great replacement for conventional CEM3 and FR4 materials.