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Recommendations For Outsourcing PCB Assembly And Small Volume Prototype Producing
It normally does not make sense to invest in costly production machines if you only need to spin several prototypes and as an alternative subcontract your manufacturing of PCB prototypes to a reliable vendor. I am going to help you find a suitable vendor and give some recommendations as to what to look out for when picking a vendor.
Often you will find a quotation system on contract manufacturer websites. Using this system, you can obtain an immediate quotation for your board or assembly. This will help you save time when evaluating several manufacturers. You should be able to enter all of the board details like board thickness, material etc. and particular requirements such as milling, surface treatments into the quote system. This will make certain an accurate quote without the danger of surcharges afterward.
If you manufacture a small volume of boards, the cost typically will be higher per board than the cost when making a larger volume. This is a result of the board production and assembly setup cost which is typically fixed. Several prototype manufacturers will mix boards from different customers to help distribute the setup cost and lower the cost per board for small volumes. In the design phase of your product, you may want to start out with a smaller volume of boards first. After that you can work out the issues with your design. Lastly you will be able to ramp up the build quantity
One limitation with small-quantity prototypes still is that the choice of materials and material thicknesses will be limited. If you are using a particular material then chances are there won’t be any other clients utilizing the same material. The production cost will generally decrease with a longer lead time which will give the supplier more freedom in slotting the production. You should find that the quote will vary based on the lead time when you enter your data in the instant quote section.
Verify that your supplier can read your production files which typically would be Gerber files for circuit boards but can also be software-specific files in some instances. If you select a manufacturer which also offers circuit board design services then you can rest assured that there won't be any extensive delays in case your board files have a problem that needs to be corrected.
Ensure that your supplier can handle the package type of each component on your board if you plan on outsourcing the PCB assembly. You should get a list of what types of components your vendor can mount online. Some manufacturers may not be able to assemble special BGA or chip-scale packages. Contact your supplier if you have questions about what type of parts can be mounted. That will avoid problems later on.
If you wish to simplify the ordering of board components, you can pick a manufacturer which maintains inventory of standard parts. That way you only have to consign special types of components. When using your vendor's inventory, you need to make sure you indicate which components you are consigning. You can typically specify this in your bill of materials. The BOM which you upload to your vendor's website must include this information.
If you plan to buy the SMT stencil from the same supplier, you should order it immediately when purchasing the circuit boards to eliminate any PCB assembly delays.
To guarantee quality, be certain that your vendor carries the usual quality approvals. In addition, if your board needs particular testing, make certain your vendor has appropriate testing equipment. Some testing will require additional time and cost.
In the Maker Shed: Video Game Shield (MAKE Magazine)
Ever want to add a more interactivity to your Arduino projects? The Video Game
Shield from the Maker Shed lets you create graphics, text, games, sound
effects and more using your Arduino! Make great black and white video games
that you can play right on your TV.
What is the right standard to use for qualifying PCBs IPC-A-600 or IPC-6012?
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