How to calculate the cost and quotation of PCB circuit board

Presumably many pcb purchasersare at a loss for the changeable pcb prices, even those with years of experience may not understand the reason. There are many factors affecting the price of pcb circuit board, due to pcb board materials, production technology, difficulty, customer demand, region, payment method, manufacturers and other factors resulting in different pcb circuit board manufacturing costs.

First, pcb board selection of different materials caused by the diversity of prices

When it comes to double panels, the plates generally have FR-4, CEM-3, and so on, and the plate thickness varies from 0.6mm to 3.0mm, and the copper thickness varies from ½Oz to 3 Oz. These plates have caused a huge cost gap. In terms of solder resistance ink, there is a certain price difference between ordinary thermosetting oil and photosensitive green oil, so the different materials cause the price diversity. Regarding "How should the cost of pcb Board be calculated?" This article has been explained in detail, you are interested to refer to.

Second, the different production processes used by PCB result in the diversity of prices

Different production processes will cause different costs. For example, gold-plated plate and tin plate, the production of shape gong (milling) plate and beer (punching) plate, the use of silk screen lines and dry film lines will form different costs, leading to the diversity of prices.

Third, the price diversity caused by the different difficulty of PCB itself

Even if the material is the same, the process is the same, but the difficulty of PCB itself will cause different costs. If there are 1000 holes on both types of circuit boards, the hole diameter of one board is greater than 0.6mm and that of the other board is less than 0.6mm, different drilling costs will be formed; If the other two kinds of circuit boards are the same, but the line width and line distance are different, one is greater than 0.2mm, one is less than 0.2mm, it will also cause different production costs, because the difficult board scrap rate is higher, the cost will increase, and then cause the diversity of price.

Fourth, different customer requirements will also cause different prices

The level of customer requirements will directly affect the finished product rate of the board factory, for example, a board according to IPC-A-600E, 98% qualified rate, but according to the class3 requirements may only 90% qualified rate, resulting in different costs of the board factory, and finally lead to the variable product price.

Fifth, the price diversity caused by different PCB manufacturers

Even the same kind of product, but because different manufacturers process equipment, technical level is different, will form different costs, many manufacturers like the production of gold-plated plate, because the process is simple, low cost, but also some manufacturers produce gold-plated plate, scrap that rise, resulting in higher costs, so they would rather produce spray tin plate, so their spray tin plate quotation is lower than the gold-plated plate.

Sixth, price differences caused by different payment methods

At present, PCB board manufacturers generally adjust PCB prices according to different payment methods, ranging from 5%-10%, which also causes the difference in price.

Seventh, regional differences lead to the diversity of prices

At present, from the geographical position of the domestic, from the north to the south, the price is increasing, different regional prices have a certain difference, so regional different also caused the diversity of the price picture how to calculate PCB quotation!

1. Sheet cost (Different sheet cost is different)

2. Drilling costs (the number and size of holes affect drilling costs)

3. Process cost (different process requirements of boards lead to different process difficulties and even different prices)

4. Labor, water and electricity plus management costs (this cost depends on the cost control of each factory, relatively speaking, Taiwan-funded factory is low in many countries)

The basic composition of these, as for the price of raw materials, now basically stable, the possibility of price increases is unlikely.

As far as the plate is concerned: the price is mainly affected by the following points:

1, plate material: FR-4, our common double-sided and multi-layer plate, his price is also related to plate thickness and plate middle copper platinum thickness, and FR-I, CEM-1 these are our common single and plate material, and the price of this material is also much different than the above double-sided, multi-layer plate.

2, is the thickness of the plate, its thickness is our common is: 0.4, 0.6, 0.8, 1.0, 1.2, 1.5, 1.6, 2.0, and our regular plate thickness price difference is not very big.

3, is the thickness of copper platinum will affect the price, copper platinum thickness is generally divided into: 18um(2/1oz), 35um(1oz), 55um(1.5oz), 70um(2oz) and so on.

4. Suppliers of raw materials are commonly used: Shengyi/Jiantao/International, etc.

Process cost:

1. Depending on the circuit on the PCB, if the line is dense and thin (below 4/4mm), the price will be calculated separately

2. There is a BGA on the board, so the cost will rise relatively. In some places, how much is another BGA

3, to see what is the surface treatment process, we commonly have: spray lead tin (hot air leveling), OSP(environmental protection board), spray pure tin, tin, silver, gold and so on, of course, the surface process is different, the price will be different.

4, also look at the process standard; We commonly use IPC2 level, but some customers have higher requirements, (such as Japanese) we commonly include: IPC2, IPC3, enterprise standard, military standard and so on, of course, the higher the standard, the higher the price will be.