How much does PCB assembly cost?

PCB assembly cost drivers =PCB Board Cost +Components Cost + SMT and DIP Cost + PCBA Test Cost + Package Cost 

The assembly cost of pcb is a priority for many people when choosing a pcb assembly factory. Many people will choose to use the pcb assembly cost calculator, here FS Technology will explain to you “how to calculate pcb assembly cost” in the form of text.

PCBA Manufacturing Cost

PCB material costs

Taking ordinary double-sided boards as an example, the sheets generally have fr-4cem-3, etc., the thickness of the board varies from 0.2mm to 5.0mm, and the thickness of copper varies from 0.5oz to 3oz. There is a huge price difference; in terms of solder mask ink, there is also a certain price difference between ordinary thermosetting oil and photosensitive green oil. 

PCBA Process costs

Different PCBA production processes will cause different costs. For example, gold-plated plates and tin-sprayed plates, gong (milling) plates and beer (punching) plates for making shapes, using silk-screen lines and dry film lines, etc., will form different costs. 

Manufacturing difficulty increases PCBA assembly costs

Even if the materials are the same and the process is the same, the difficulty of the PCB itself will cause different costs. For example, if there are 1000 holes on two kinds of circuit boards, and the hole diameter of one board is greater than 0.6mm and the hole diameter of the other board is less than 0.6mm, different drilling costs will be formed; if the two kinds of circuit boards are the same, but the line width and line spacing Different, one is greater than 0.2mm, and the other is less than 0.2mm, which will also cause different production costs. Because the difficult board has a higher scrap rate, the cost will inevitably increase. 

Customers’ requirements

The level of customer requirements will directly affect the yield of the board factory. For example, a board according to ipc-a-600e, class1 requires a 98% pass rate, but according to class3 requirements, it may only have a 90% pass rate, resulting in different costs for the board factory.

PCB manufacturing time cost

If you require quick manufacturing time, the cost will be higher than normal manufacturing time. 

Components Cost

Components cost is the mainly cost in PCBA SMT Processing. The PCBA manufacturer purchases the components according to the BOM. Maybe some manufacturer will give substitute components suggestions to customers to help customers save some cost. And some manufacturers will purchase the components according to the original part number in the BOM to make sure the quality and no mistakes. It depends on customers’ choice. 

SMT and DIP Cost 

The number of solder pads points is the decisive factor in SMT price. Now the PCB SMT quotation is basically in accordance with the number of solder pads points to calculate, the more solder pads points , the price is higher. The solder pads points are different, the pcba cost is also different. Both SMT and DIP cost are calculated by the solder pads points quantity, but DIP points cost will be higher than SMT points cost. 

Surface mount technology (SMT) can save money due to low installation costs and high precision of automation.The PCB DIP soldering will cost more as this process need more manual soldering, so labor cost will be added, and pcb assembly price will be high.

Stencil Cost

Assembly pcb cost also depends on stencil cost.Stencil is needed in the PCB assembly process to print solder paste on the PCB solder pads, it is a basic tool used in PCB assembly. This cost is usually a one-time cost as long as the manufacturing files have no any change. 

PCB Assembly Inspection Cost 

If customers need the manufacturer to do extra PCBA programming and function test process, there will be some test cost charged by the manufacturer. The cost is depending on the test process complexity and test time. 

Conformal Coating Cost 

There are two ways in this link, conformal coating sprayer and manual coating. The conformal coating spraying machine mainly generates the man-hour and material cost of spraying. Manual coating mainly involves labor costs and consumables. If customers’ PCBA has conformal coating requirements, there will be conformal coating cost charged. 

Order Quantity

On the manufacturing side, large quantities lead to lower assembly costs due to economies of scale. It means that when the product is mass-produced, the unit price per PCB will be greatly reduced. In the long run, increasing the number of printed circuit boards can save cost for companies by avoiding unnecessary one-time costs.

Expedited Fee

Usually, the manufacturer will arrange manufacturing according to the order placing time. But if customers requires expedited finish the assembly with a short time, then there will be extra expedited fee charged. 

Package Cost

Every customer’s PCBA size and requirements are different, so the package ways are always different. Usually the manufacturer will be responsible for packing each product well. But if customers have some special requirements for the package and they need custom packages, then there will be package cost charged. 

In Conclusion, PCBA costs are made up by many factors. Any factor will cause different PCBA cost difference, so customers can choose the supplier according to your own requirements. If you recognize the capabilities of FS Technology, please contact us by email, we have a 24-hour one-to-one service, and we will provide you with FS Technology’s printed circuit board price list.

That’s all for “cost of pcb assembly”, thanks for watching FS Technologies’ PCBA Blog.

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