Why is the PCB price different charged by different manufacturer?-Vip Circuit
Many people often ask, for same demand of PCB fabrication,why does the price become different offered by PCB manufacturers?
Actually,
the cost calculation of PCB is the most special and most complex in all
industries. From material opening, laminate and routing, up to FQC, packaging,
and warehousing, it is necessary to calculate the cost of material, labor cost,
manufacturing cost and so on, according to the input of each process, and then
the cumulative cost in batch according to the order number.
And different
types of product, the standard rates of each process will be different.
For
some products such as blind buried PCB, immersion gold PCB, copper base, it
must use some special calculation methods. Similarly, the drill size used in
drilling process will also affect the cost of the product, which directly
affects the WIP cost, scrap cost.
Here list some points that make the PCB cost different, for reference only.
Take
the double sided PCB as an example, the material usually is FR-4, CEM-3 and so
on. The thickness varies from 0.6mm to 3.0mm, and copper thickness is from Hoz
to 3 Oz. All these have caused huge price difference on the CCL. In terms of
soldermask oil, the common thermosetting oil and the green sensitive oil also
have a certain price difference.
2, Different
processing technology
For
example, Gold plating board, and HASL, milling profile or punching profile,
using silkscreen or dry film to do the trace, will result in the difference of PCB
cost.
3, The
design of PCB itself
Even
if the material is the same, the process is the same, but the difficulty of PCB
itself will result in different costs.
For
example, there are 1000 holes in the two PCB, and the hole size of the one is bigger
than 0.6mm, and another is less than 0.6mm, the drilling costs will be
different. Another example is the different trace width/space, the trace
width/spacing is smaller, the scrap rate is higher, the cost inevitable
increases.
4, Customer
requirement/technological standard
Such
as a board according to IPC-A-600E,CLASS2 requirements reaches 98% qualified
rate, but according to Class 3 only reaches 90%
5, PCB
factory equipment and technology
Even
the same product, but because the factory craft equipment is different, the
technical level is different, will also form the different cost.
For example,
some manufacturers like to produce the HASL, some ones like to do heavy copper,because
their technology is relatively mature on a certain type, their production cost
is certainly lower.
6, Different
payment term
The
factory will adjust the price according to the payment method, ranges from 5%
to 10%. This is self-evident.
7, Different
processing area
PCB prices in the inland city are relatively cheaper than those in coastal cities
Related reading
Approach a high quality printed circuit board manufacturer to get the good PCB
You should know more about PCB manufacturer in China
Send Email
Jeff