How to Order Printed Circuit Boards Online

A PCB is a highly effective and reliable tool for strong electric pathways in computers and other electronic equipment. These boards also serve as a mounting surface for many of the electric components necessary to make the machine run properly. A computer is typically made up of multiple circuit boards with many layers, sometimes as many as 8 or 12 layers.

Although more expensive than wire-wrapped or point-to-point constructed circuits on the front end of production or for individual units, printed circuit boards are a better value for larger production because they can be copied cheaper and faster than other methods. Commercial production typically uses a silk screening method, but hobbyists use etching or laser prints on paper.

Those who are not quite adept at creating their own PCBs have are now able to order a printed circuit board online. A number of companies are available to create a circuit board to fit any needs a client may have, and can quickly design, manufacture, and ship the product to the customer.

Although buying a PCB online can be somewhat confusing, but there are many sources that are available to help you through the search process. Some excellent sources of information for buying a printed circuit board online can be found through online magazines such as PCB007 Magazine and EMS Magazine.

Pricing for a PCB online varies from company to company. Often the pricing is determined by how many layers your design requires. Because of the ability to quickly manufacture copies of a design, the more boards ordered together, the less expensive per unit they are. Thankfully, many websites offer instant quotes using clear order forms to ensure that the PCB you want is exactly what you get. A new company that just hit the market has an order form that automatically updates the price per unit as you complete the form.

As when considering purchasing any item, it is most important to do your research. There are lots of places to gain more information about purchasing a board online, and often a simple search engine request will be enough to provide you with all the information you need to make a good, informed decision.

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Tips For Outsourcing PCB Assembly and Prototype Manufacturing

It often does not make sense to invest in expensive production equipment if you just want to spin a few prototypes and instead outsource your PCB assembly and prototype manufacturing to a reliable vendor. I will give some tips as to what to watch out for when looking for a contract manufacturer.

Many contract manufacturers will offer an instant quote mechanism on their website for manufacture of circuit boards and assembly of prototypes. This will save you time when comparing different vendors. Make sure that the quote system allows you to enter all of the details, such as board material, thickness, copper thickness, milling etc. so that you can get an accurate quote without any surprises later on.

Usually the cost per board will decrease as quantity increases. This is due to the fairly high setup cost of circuit board manufacturing and component assembly. Some vendors will use a system where they combine boards from several customers. This way the setup cost will be distributed amongst several customers. When you manufacture a product, you obviously do not want to have to manufacture a large quantity of boards right away while you refine your design.

One limitation with small-quantity prototypes though is that the choice of materials and material thicknesses will be limited. If you are using a special material then chances are there won't be any other customers using the same material. In addition, lead time plays a big role in determining cost. A longer lead time allows the manufacturer more freedom in slotting your production. This is typically reflected in lower costs which you will see in the quote section. Obviously if you are in a rush and want to be moved to the top of the pile you will need to spend more money.

Make sure that your contract manufacturer will support the file format for manufacture that you provide. The most common format for PCB manufacture is the Gerber format but some vendors will also accept board files from common PCB software products. Some suppliers also offer in-house PCB design. Even if you design your board yourself, picking a vendor with design services may prove useful in case there is a problem with your files. In this case your vendor can make quick changes which will avoid costly delays.

When subcontracting PCB assembly, ensure that your vendor can assemble all of the package types that your board uses. Some vendors cannot assemble certain type of IC packages such as BGA, chip-scale packages or very small component types. If in doubt be sure to contact your vendor ahead of time.

Some contract manufacturers will carry an inventory of standard SMT and through-hole components. You will save time if you can pull from your vendor's inventory rather than purchasing each component yourself. Make sure to specify which components you wish to consign yourself when you upload your bill of materials.

Most vendors will also offer manufacture of the SMT stencil which is required for PCB assembly. Be sure to order the stencil right away when ordering the circuit boards themselves to avoid delays.

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