Foshan medical FPC production standard

What is PCB board :PCB board generally refers to printed circuit board. Printed circuit boards, also known as printed circuit boards, are providers of electrical connections to electronic components. Its development has been more than 100 years of history, its design is mainly layout design, the main advantage of using circuit board is to greatly reduce wiring and assembly errors, improve the level of automation and production labor rate. According to the number of PCB layers, it can be divided into single panel, double panel, four layer board, six layer board and other multi-layer PCB. Because the printed circuit board is not a general terminal product, so the definition of the name is slightly confused, for example: the mother board used by personal computers, called the motherboard, and can not be directly called the circuit board, although there is a circuit board in the host board, but not the same, so the evaluation of the industry when the two related but can not say the same. Another example: because there are integrated circuit parts loaded on the circuit board, so the news media called him IC board, but in fact he is not equal to the printed circuit board. We usually say the printed circuit board refers to the bare board - that is, no board components. Medical FPC (3) For high-power devices coated with thermal silicon grease, check whether the thermal silicon grease is dry and solidified medical FPC

Aluminum substrate is generally placed on the patch device tube output rectifier tube through the substrate to conduct the heat out, the thermal resistance is very low, can achieve high reliability. The transformer adopts plane patch structure, but also through the substrate heat dissipation, the temperature rise is lower than the conventional, the same specification transformer adopts aluminum substrate structure can get larger output power. Due to excellent thermal conductivity aluminum plate, difficult in small amount of manual welding, solder cooling too fast, easy problems existing a simple and practical method, will be a common electric iron used ironing temperature adjustment function is), turn it over, ironing, oriented fixed well, the temperature to 150 ℃ or so, put the aluminum plate on top of the iron, heating time, Then affix element in accordance with the conventional methods and welding, electric iron temperature for the device is easy to welding, high device damage when possible, copper or aluminum plate strip, the low temperature welding effect is bad, be flexible., for a dry solid dry solid heat dissipation silicon grease should be cleared after coated with new heat dissipation silicon grease, in order to prevent the circuit board burn out due to bad heat dissipation of high power device. The special detection method of aluminum base copper clad plate, one is the measurement method of dielectric constant and dielectric loss factor, which is the series resonance method of variable Q value. The sample is connected to the high-frequency circuit in series with the tuned capacitor, and the principle of measuring the Q value of the series circuit; The second is the thermal resistance measurement method, to calculate the ratio of temperature difference between different temperature measurement points and thermal conductivity, aluminum substrate process refers to the principle of advanced technology and economic reasonableness, to the final product quality for the purpose of aluminum substrate processing and processing process to develop reasonable and feasible norms. Ensure smooth production process.

Medical FPC1 and FR4- have hard texture and different thickness of 0.15-2.0mm. They are mainly used on the opposite side of FPC welding, as reinforcement, to facilitate stable and reliable welding. Fr-4 is a fire-resistant material grade code circuit board: a printed board formed on an insulating substrate to a predetermined design to connect wires from point to point, but without printed elements. Circuit board: A printed board on an insulating substrate formed to a predetermined design to connect wires from point to point and to print components. Generally speaking, the circuit board is already equipped with various components of the board, and the circuit board is not equipped with components, just a good design of the substrate. There is no difference between a circuit board and a circuit board, essentially the same. It is not a material name, but a material grade. Therefore, there are many kinds of FR-4 grade materials used in general circuit boards. But most are composites made from what is known as tera-function epoxy with Filler and glass fiber.

Medical FPC1. Audio equipment: input amplifier, output amplifier, balance amplifier, audio amplifier, preamplifier, power amplifier, etc. 2. Power equipment: switching regulator, DC/AC converter, such as medical FPCPCB SW regulator board in general is the copper base plate, it is divided into single panel and double panel, materials used in between there is obvious difference, main material is aluminum plate, aluminum board is the PCB's main material is copper, aluminum plate because of its special PP material. Heat dissipation is better, the price is more expensive. Compared with PCB in terms of heat dissipation, aluminum substrate is more superior to PCB in terms of heat dissipation, and its thermal conductivity is different. Aluminum substrate is a kind of PCB, and the price of aluminum substrate is more expensive. 3. Communication electronic equipment: high frequency amplifiers, filter appliances, transmitting circuits. 4. Office automation equipment: motor drivers, etc. 5. Automobile: electronic regulator, igniter, power controller, etc. 6. Computer: CPU board, floppy disk drive, power supply unit, etc.