Introduction
In almost every electronic device, we will find the board upon which the electronic components are assembled. This board is known as Printed Circuit Board (PCB).This PCB is manufactured at various scales ranging from small home based factories up to the large industries totally dedicated to PCB manufacturing.Without PCB, the electronic device, instrument, machine or equipment cannot exist.To find good PCB sources is important which should considered more.
Content
1.PCB Manufacturing Sources
In China we have numerous PCB manufacturing companies. They provide their services at very reasonable rates and give good quality. These companies are mostly single proprietorship companies and have a target to mass manufacture the PCB and export them to the entire world.
“Mass Manufacturing” means that, the company manufactures or fabricates the product (PCBs in our case) in very large quantities so that the cost per unit is very low. This helps the company to generate more revenue and earn more profit while the customer also gets good quality product in cheap rates
The most commonly used way of PCB sources is to find the supplier online. You have many large websites like Global Sources, Alibaba, Ali express, Made in China, wellpcb, and sparkfun etc
These pcb sources provide complete prototyping services including customized PCB fabrication and components stuffing on the PCB. They have online requisition method, which the user fills online and enters his or her requirements pertaining to PCB like size, Base Material, solder mask, silk screen, number of layers etc etc
2.Price vs Quantity:
The most common issue that a developer / designer faces is that he or she has completed the design work and just need 2 or 3 pieces of PCB for testing and validation of design. For this the PCB sources supplier ask for large quantity or pieces of PCB and their MOQ (Minimum Order Quantity) is usually very high like 10,000 or 20,000 pieces.
So the designer has to research the internet and go through many suppliers quotations and select the best quote which has minimum MOQ, lowest price per piece, good quality work, and good feedback ratings from previous customers
3.RF PCB sources
The common difference between and ordinary PCB and RF PCB is the issue of high frequency signal interference produced by high speed switching devices. These interferences are found in PCB tracks and adjacent components affecting the performance of electronic device in terms of ripple, noise and cross talk interference.
There are various applications of RF PCB like Military Space, Consumer Electronics (IoT and Wearable Gadgets like BLE and GPS), Medical, Automotive (GPRS) and Industrial (Zigbee or WiFi)
The above are the online RF PCB manufacturers, providing their services in this domain. The seeedstudio provide the Quality Control IPC Class 2 and IPC Class 3. They also provide services in 3D printing and PCB layout designs. They use ALTIUM, PROTEL, PADS and EAGLE. The Made in China is the powerful online search engine to search for the suitable company for your PCB fabrication work.
4.PCB Sources of Exposure:
There are various sources of exposure towards PCB. The most important is Thermal exposure
Thermal Exposure
The two most important factors of PCB (Dielectric Constant Dk) and (Dissipation Factor Df) of laminate material are affected by a small portion of raw materials present in the finished product (finished PCB prototype). These are resin and fiber glass
The thermal / temperature effect or exposure towards the PCB is very significant. The high temperature and harsh surrounding environment can bend, deform or even melt down the PCB and its assembly.
This is the reason why the designers use various base materials for PCB for varying temperature.
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