Keyword: PCB circuit, PCB procurement, PCB production factory, PCB manufacturer
PCB procurement staff when making PCB procurement, often do not know the price of PCB is how! Also not facilitate the inquiry and purchase, here introduces the basic elements of the price of the circuit board! Of course, according to the technology and material of each PCB production factory, each factory price also is distinct. Factors and circuit board itself determines its costing focus is different, have simple (length * width * square unit price), there is also a complex (according to the technical requirements and quality requirements, etc), to particular case is particular analysis.
A. In terms of plank: influence prices mainly include the following:
1, plank material: FR - 4, CEM - 3, this is our common double panel and laminated board, he is also related to the thickness and plate thickness of copper foil, the FR - I, the CEM 1 is our common single panel material, and the price of this material are double-sided, multilayer board with the above vary widely.
2, plate thickness, the thickness of it we common are: 0.4, 0.6, 0.8, 1.0, 1.2, 1.5, 1.6, 2.0, 2.4, 3.0, 3.4, and the thickness of our regular plate prices don't vary that much.
3, the thickness of the copper foil may also affect the price, generally can be divided into: copper foil thickness (0.5 OZ), 35 (1 OZ), 70 (2 OZ), 105 (3 OZ), 140 (4 OZ), etc. (oz is the abbreviation of symbol ounce, known as the "ounce" in Chinese translated into oz (Hong Kong) is the imperial units, as a unit of weight is also known as Britain. 1 oz = 28.35 g) (g)
4, the suppliers of raw materials, common and common to have: raw profit \ building \ international and so on
Drilling relatively the price isn't as big as plate, but too many hole is too small that price is another, as the hole is less than 0.1 the following the price will be higher.
B. Process cost:
1, to see whether the PCB circuit, such as fine line close (under 4/4 mm), the price will be plus.
2, as well as panel have BGA, cost will be relatively rise, some PCB manufacturers is another calculate how much money a BGA.
3, want to see what is surface treatment technology, we have: common spray pewter (hot air leveling), OSP (environmental protection), pure tin, tin, silver, gold and so on, and surface process is different, of course, the price also will be different.
4, also look at technology standard; We commonly used is: IPC2 level, but have customer requirements will be higher, (such as Japanese) we have: common IPC2, IPC3, enterprise standard, the standard and so on, of course, the higher standard, the price will be higher.
C. The last is to see the appearance of PCB, as we commonly used as shape milling shape, but some board shape is complex, we only use open mould with blunt, this will have a set of mould cost.
1. The board size
2. Number of plies
3. The surface treatment (immersion gold, lead free HAL, OSP, ...)
4. Quantity
5. Qanel (normal FR4, Rogers, PTFE...)
There are some other factors also have some influence on prices
1. The line between line spacing is too small
2. The hole number
3. The minimum aperture is too small
4. The mold
5. The tolerance too tight
6. Thickness aperture ratio
7. Special requirements (finished product too thick or thin, thick copper plating, stick a non-repeatable barcode, etc...).
Source: //www.seekic.com
