How do you get the PCB assembly quote, what will affect PCB assembly cost? We will explain below. Different Ways Of Assembly, Components Quantity,Component Density and so on

1. www.86pcb.com
What Affect PCB Assembly Cost?
We are professional manufacture with more than 14-years’ experience in PCB&PCBA industry, we
can provide one-stop service include Components Sourcing, PCB Manufacturing, PCB Reverse
Engineering, SMT & DIP Assembly, X-ray Test etc..
How do you get the PCB assembly quote, what will affect PCB assembly cost? We will explain
below.
How do you get the PCB assembly quote?
We need client provide us completed production files which is including the bare PCB board
production files and components details. The best files is Gerber files and BOM list, then give us
the quantity for your requirement. Please also let us know if there have any special requirement,
we will send quotation sheet within 2-3 days based on your files and requirement.
Tips:
1. Gerber files must be comprehensive. It should have GBL, GBO, GBP, GBS, GKO, GPT, GPB, GTL,
GTO, GTP, GTS, GG1, GD1, GM1. If have inner, should be have G1, G2 also.
2. The BOM list must be the standard BOM list which have reference designator, part number,
description, quality, SMT method, manufacturer name, footprints, package and BOM level. It
is better if there also have Optional Information: Manufacturer, Vendor & Vendor Part
Number, Alternate Manufacturer Part Numbers.

2. www.86pcb.com
3. Pick and Place files. It should be the excel format, xls format, csv format, txt format.
4. Stencil. Which is needed when assembly.
5. The quality must have sample and bulk quantity. Like 10 pcs and 10,000 pcs.
6. Any special requirement. For example, Assembly Compliance Requirements, Test
requirement, Shipping requirement and Delivery requirement. Make sure as detailed as
possible.
What affect The PCB assembly cost?
When we received the production files from the client, our engineers will evaluate those details
and specification then send you quotation sheet. Nest we will explain for you what will affect
PCB assembly cost.
* Different Ways Of Assembly
The main assembly methods are SMD and DIP. Because the printed circuit board has two sides, if
both sides need components, the cost will be different. Below are several assemble ways:
Double side SMD
Double side DIP
One side SMD+DIP, another side SMD+DIP
One side SMD+DIP, another side SMD
One side SMD+DIP, another side DIP
One side SMD, another side DIP
* Components Quantity
The quotation of the PCB board with 10 types components and the 100 types components are
different. The more components, the higher price for assembly.
* Component density

3. www.86pcb.com
The density of components on the PCB board has a direct impact on the cost. The higher of the
density, the more difficult for PCB assembling, the higher the cost is. Conversely, if there is only
one component on the board, the PCB soldering cost is low.
* Components Package Size
Some special components will increase the difficulty of assembly. Like 1206, 0804, 0603, 0402,
0201, 01005, these components have small size, difficult to grab and solder. That’s why they will
directly affect the assembly cost, especially, the BGA and QFN.
* Components Package Methods
Different packaging methods for components can also affect the price of assembly. If the
components are scattered in the bag, the worker needs to count, which will undoubtedly
increase the cost. If components are in Reel, Tube, Tray, the cost must be differences.
* Quantity and Batch Size
The unit cost of the sample and the Batch are completely different. It can be said that the
quantity plays a decisive factor.
* Special Components
If the components are special one, like lead length, height min/max, spacing, the cost will be
difference.

4. www.86pcb.com
* Bare PCB Board
The 4 points about bare PCB below will effect the the assembly cost.
1. The layers of the bare PCB. If the PCB has more than 2 layers, our engineers will evaluate how
difficult of assembly, the cost will be difference too.
2. If the bare PCB board has the Blind Buried hole.
3. If the bare PCB board has special material.
4. The thickness of the PCB board. The thickness of the board below 1.00 mm will increase the
difficulty and the cost will be difference.
* Coating Requirement
If have spray or brush, number of coats, coverage tolerances, specified keep out areas, the cost
will be difference.
* Assembly Compliance Requirements
RoHS, IPC-A-610D Class I, II or III, ITAR can affect the cost . If you need professional certification
such as CE, the price will have a bigger difference.
* Lead free or lead Treatment
The surface with lead solder looks bright white and the lead-free solder looks pale yellow. Leaded
solder is a major metal element containing tin and lead (eg, Sn63Pb37, Sn50Pb50, etc.).
Lead-free solder is basically lead-free (EU ROHS standard is less than 500PPM, Japan standard is
less than 100PPM), and lead-free solder generally contains tin, silver or copper. Therefore,
lead-free soldering is more environmentally friendly, and the cost is higher than that of lead.
* Test requirement
Normally we will provide testing like Power up, Functional, In Circuit Test (ICT), Thermal cycling,
No test (visual inspection only). , but if special testing is required like Automated Optical
Inspection (AOI), X-ray, additional costs will apply.
* Packaging Requirement

5. www.86pcb.com
It will have difference cost between Standard ESD (electrostatic discharge) bag and
Non-standard/special containers. If need a special way of custom packaging, the price will be
different. Such as a cardboard box or plastic box with logo.
* Delivery Time
Normal PCBA production cycle and Quick turn PCBA production will have different cost.