usb pcba

$0.10 - $15.00
Company Information

Gainstrong Industry (Shenzhen) Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 1,000+
2 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Payment Terms: L/C,T/T,Western Union,MoneyGram
Place of Origin: Guangdong China
Model Number: PCBA-OEM
Supplier Type: PCBA
Alternative finishes: Electroless Nickel / Immersion Gold /Silver etc
Solder mask: Photoimageable Resist with a wide range of colours
Tolerance of Impedance: +/-5%
PCB standard: IPC-II standard
Bare Board Test: Bed of Nails /Simultaneous double-sided flying probe test
Gold plate: Edge connectors Touch Pads
Supply Ability: 50000 Piece/Pieces per Month
Packaging Details: Sealed bag, Anti-static bags, Suitable carton.
Port: Shenzhen/Dongguan/Guangzhou
Lead Time: Quantity(Pieces)1 - 10000 <=5Days,Est.Time(days),1D

usb pcba

Product Overviews

We provides printed circuit board manufacturing services in addition to PCB assembly with superior quality and a cost-effective price. We are capable of meeting the ever-increasing demands of customers, from fabricating a single board, to a small quantity of prototypes, to a high-volume production requirement by using all types of materials and modern technologies. We are capable of manufacturing single, double-sided, multi-layer and flex PCBs to the customer's specifications.


Supported Capabilities of our Printed Circuit Board Assembly (PCBA) Services:

TypesTHD (Thru-Hole Device)
SMT (Surface-Mount Technology)
SMT & THD mixed
2 sided SMT and THD assembly
Quantities1 – 10,000 PCBs
Parts/ComponentsPassives parts, smallest size 0201
Fine pitch to 8 Mils
BGA, uBGA, QFN,POP and Leadless chips
Connectors and terminals
Component PackageReels
Cut tape
Tube and tray
Loose parts and bulk
DimensionsSmallest: 0.2″ x 0.2″
Largest: 15″ x 20″
Shape of PCBsRectangular
Slots and Cut outs
Complex and Irregular
Type of PCBsRigid FR-4
Rigid-Flex boards
Types of Assembly ProcessLeaded process
Lead-Free (RoHS)
File Format of PCB DesignGerber RS-274X
Bill of Materials (.xls, .csv, . xlsx)
Centroid data file (Pick-N-Place/XY file)
Online quotes PCB and assembly labor
Electrical testingX-ray Inspection
Automated Optical Inspection
Functional testing
Profile of OvensStandard
Time to Turn-around1 to 5 days for only PCB assembly
10 to 16 days for turnkey PCB assembly
Factory equipment


Packaging & Shipping

 Our company is not only trying to give customers a good product, but also pay attention to offering a complete and safe package. And here we prepare some personalized services for all the orders.

Common packaging:
PCB:  Sealed bag, Anti-static bags, Suitable carton.
PCBA:  Antistatic foam bags, Anti-static bags, Suitable carton.

Regular Cartons Specification.
No. Dimension (L*W*H)
Small Size :         30cm*28cm*18cm
Medium Size:       45cm*30cm*15cm
Big Size:              50cm*32cm*17cm

Customized Cartons:
Carton outside according to the requirements of customers printed the name of the customer address, mark, the customer needs to specify the destination and other information.


PCB Assembly FAQ:

How does SI Electronics handle part cross-referencing or replacements on turnkey PCB assembly orders?

After inspecting your Bill of Material, we transmit to the customer the parts we currently have in stock, which are usually low cost or free components. Our procurement team will give you suggestions regarding how to obtain cost savings in sourcing cross-referenced parts. This service is only advisory. The customer always makes the final decision.
For turnkey assembly orders, what is the process by which SI Electronics procures components?
If we do not have inventory in stock, we order parts in volume per your Bill of Materials (BOM) so you obtain the highest level of cost savings. For hard-to-find or rarely used parts, we typically add 5% as spare parts to insure we have enough parts to manufacture your complete order. For order minimums, we contact the customer for approvals.
What are your turnkey lead times?
Total lead time includes part sourcing plus assembly lead time. We try to compress the total lead time by using our resources to accomplish work in a timely fashion. Once he have received your Gerber file and Bill of Material, we begin procuring your parts and preparing the stencil.
What is the minimum size for turnkey assembly orders?
As a general rule, we have no minimum order size. However, larger orders obtain greater cost savings.
What do you do with extra parts not used in the turnkey PCB assembly process?
We can maintain extra parts in stock to be used on future orders. But if you want the parts for your own testing, we can send them to you at no charge. Contact us about the extra parts when your PCBs are ready for shipment.
What information do I need to provide to initiate a turnkey PCB assembly order?
  • Gerber file(s)
  • Bill of Material (BOM) in Microsoft excel (.xls) format that includes the vendors’ names, part numbers, ref designators, detailed part description and amount needed.
  • Centroid data file
  • Other specifications or instructions as needed.
What is included in a Centroid data file?
Created by a CAD system, a Centroid data file is a machine file that details the X, Y, side, top, bottom and rotation locations, as well as the reference designator that is used in PCB prototype fabrication and assembly.
Is SI capable of manufacturing lead free PCB Assembly?
Yes. SI’s production facilities has two additional assembly areas dedicated to lead free assembly.
Does SI perform x-ray inspection of Ball Grid Arrays?
Yes. We perform x-ray inspections of BGAs. In addition, SI is capable of conducting x-ray inspection lead-less IC pins and other micro-sized components with leads too small to be viewed with a microscope.
Can SI Electronics perform partial PCB assembly?
Yes. When you place a turnkey PCB assembly order, please make it know to our order entry team what components you prefer not to be assembled and ensure this preference is annotated in your bill of materials.
For multiple orders, how does SI prefer parts to be kitted?
  • Place multiple kits in one shipping package with each order labeled by the appropriate order number.
  • Shared parts should be marked by a label to indicate their common use.
  • Increase the extra parts quantity by 5 percent for each separate order.
How do I need to label and package parts?
  • Label with the part number and reference designators per your BOM each tray, bag or container.
  • Parts that require special storage requirements such as static or moister should be packaged appropriately.
  • Seal or tape tightly all SMT parts. Loose parts can be damaged and can delay the production process.

What is SI’s shipping address?
Please label each package with your purchase-order number. Ship to: