3rd Floor, Nanhai Plaza, NO. 505 Xinhua Road Xinhua District, Shijiazhuang Hebei China
[email protected]

Small Batch Assembly

  • We are a leading manufacturer providing our customers with small-batch PCB assembly services.
  • With us, rest assured of entirely risk-free assembly services that are manageable in a short time.

PCB Assembly

  • Placer Speed:
    6000 Chips/Hours
  • Lead time:
    25+Days (To Be Decided)
  • SMT:
    SMT, Through Hole Assembly Single / Double-Side SMT, Single / Double-Sides Mixture Assembly.
  • PCB Size:
    50 mm×50 mm ~450 mm×406 mm
  • PCB Thickness:
  • Min. Diameter / Space of BGA:
    0.2mm / 0.35mm
  • Qualifications:
    ISO 9001:2008
  • Accuracy:
    <±40 µm, Under the Condition of 3σ,CPK≥1
  • Min.Line / Track Width:
  • Minimum Width / Space of QFP
    0.15mm / 0.3mm, Minimum Diameter / Space of BGA: 0.2mm/0.35mm
  • Reliability Test:
    Flying Probe Test / Fixture Test, Impedance Test, Solderability Test, Thermal Shock Test, Hole Resistance Test, and Micro Metallographic Section Analysis, etc.

Small Batch Assembly

  • 1
    Send Files To Us(Gerber&BOM)
  • 2
    Quote In 24 Hours
  • 3
    Confirm The File and Order
  • 4
    PCB Fabrication Part procurement
  • 5
    Soldering, Testing Quality Control
  • 6
    Packaging& Delivery

Small Batch Assembly

Prototype+Components Procurement+Soldering+Testing

More Discounts for Medium-Volume Prices

Accept T/T, cash, credit card, PayPal, bank transfer, etc.

Our two factories have price support for different orders.

PCB assembly
Lead Time

average production time for Printed Circuit Board Assembly) is board presented after the entire parts and components get soldered and rightfully installed. A PCBA orders:

Production Days
PCB Fabrication+Parts Procurement
  • * Please triple-check all files and information before placing the order.
  • * Shipping time depends on the destination country and the shipping method selected.

How to order

In Order To Quote You, We Need:

Gerber File

.brd / .pcb / .pcbdoc / .gbr / .cam


The Microsoft Excel format (.xls / .xlsx / .csv / or tab-delimited)

why us

Quickturn PCB Assembly

  • PCB fabrication and parts procurement are carried out simultaneously, saving time
  • Prototype orders placed within 24 hours
  • Quote and Order Online at any time

Competitive Price

  • Our price is one of the most competitive in the world
  • Own factory with reasonable cost control, no hidden cost in it
  • Accept T/T, cash, credit card, PayPal, bank transfer, etc.
  • Our two factories have price support for different orders.

On-Time Delivery

  • Standard methods are DHL and FedEx, door-to-door service. Average Shipping Time only 2-4 Days.
  • Cooperate with two transportation companies for many years with discounted prices
  • Anti-static+Moisture-Proof+Anti-Vibration Packaging; Inspection certificate
  • Professional agent To Iran, Pakistan

Quality Assurance

  • All products follow the IPC or UL Standards and the ROHS&REACH standards.
  • 98% customer positive evaluation and satisfaction Standardized factory processes and management Multiple testing services

Return and Refund

  • In case our PCB is not usable due to our fault, you can ask for compensation.
  • We can refund your account directly or rework the unusable boards or re-fabricate your PCB and re-ship to you at our cost, but please cooperate to solve the problem if you need to rework.

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We have two PCB assembly factories, one in Shijiazhuang, one in Shenzhen.

The factory in Shijiazhuang is a dedicated division of our advanced service(military sector), equipped with 4 SIEMENS SMT lines, and the Shenzhen factory is dedicated to our standard service (Non-Military) equipped with 4 YAMAHA SMT lines, X-ray and AOI, providing a quality assembly service with very reasonable prices.

We can provide all kinds of Electromagnetic Interference (EMI) responsible for many cases of circuit board failure. EMI causes about 50% of PCB prototype assembly service you, including wiring harness assembly, injection, and conformal coating.



NXP France


WellPCB PTY LTD is a subsidiary of Uniwell Circuits Co. Ltd.

At WellPCB, we pay apt attention to delivering top-notch PCB Assembly Turnkey and PCB fabrication services for you—our customers.
Hence, we don’t trade-off on our high-quality, prompt delivery and simple ordering, while we still stick closely to the lowest prices.
So, it’s no wonder that we have tons of customers making PCB orders every day—from across the globe. Plus, many product requests have given us the ability to deliver over 10,000 varieties every month.
If you want to place orders with a high turnover, feel free to do so because we’re up to the task.
The table below shows the time it takes to get your different PCB layer orders delivered to your doorstep.

Layers1-2 Layers4-6 Layers8-12 Layers
Standard6 Days7 Days8-12 Days
Express48 Hours96 HoursContact Us
Crazy Express24 Hours72 HoursContact Us

SMD – The Best Guide to SMDs and the SMT Technology

With the leaps and bounds experienced in this industry, various technologies come in place to manufacture these devices, and the Surface Mount Technology is one of them.  As time goes by, electronics components size and designs aim for smaller sized devices and boards. These reduced-size components are not only low in structure but also cheap and fast. This convenience explains the major boom of the SMD.

Table of Contents

With the leaps and bounds experienced in this industry, various technologies come in place to manufacture these devices, and Surface Mount Technology is one of them.  As time goes by, electronics components size and designs aim for smaller sized devices and boards. These reduced-size components are not only low in structure but also cheap and fast. This convenience explains the major boom of the SMD.

1. What are SMDs?

As we have stated above, Surface Mount devices are devices that are manufactured through the Surface Mount Technology. Widely known as the SMT, the surface mount technology is used to mount electronic components on the SMD’s PCB’s surface. With this technology, the leads and axils lay on the PCB’s conductive tracks, wherewith the use of soldering iron, they are mounted on the board, and no form of drilling is done to reinforce the components.

Once employed, the SMT speeds up the production process. An SMT component is mostly smaller than its through-hole counterpart because usually, it has shorter leads or no leads whatsoever. The existence of the elements is so tiny in size. Hence, they give space as holes are not bored, and both sides are available for use.


2. Repair and Maintenance of SMD Components

To grow and stay put, we all have to maintain our bodies, and so does the SMDs. The surface-mount devices use conductive tips or hot air blowers for removal and replacements of electronics components.

Soldering iron tip attachment is a conductive tool that comes at a pocket-friendly price. The tips are in different shapes, sizes, and configurations for various SMT components and through-hole components. Composite tips are slightly at a higher cost than the soldering iron tips attachments that have heating elements.

The Hot Air SMD rework stations are more expensive than the latter two. They use nozzles of different types and sizes. The hot air repair tooling is a standard tool mainly because it is ideal for damage-free repair. An example of a perfect solution for surface mount technology components is the GOOT GSR-302.

3. Choosing Repair Equipment for SMDs

Repair systems are readily available in the market, but electronic companies need to keep in mind that repair tools don’t need to be expensive when choosing the right repair equipment.

If you need to repair many boards, you should avoid the automated repair equipment and opt for the SMT inspection equipment. Though while the inspection tools are still in the developing stages, x-ray and laser inspection are the only available automated inspection equipment in the market.

Most electronic companies worldwide depend on visual inspection at 2 to 10X using a microscope or magnifying lamp.


4. Identification of SMDs


These are simply metal conductors looped through a ferrite bead and just as similar to the through-hole designs, but instead, they have axials and caps instead of leads. They have a dark grey color and also have magnetic features.


They often have two or three symbol codes such as diodes and transistors because their size does not facilitate them to be marked by average numbers as other more prominent components.


They are generally large enough to be imprinted with the complete part number, including the manufacturers’ specific prefix.


5. Advantages of Surface Mount Technology

Surface Mount Technology allows smaller SMD PCB designs by enabling components to be placed together on the board leading to more lightweight device designation.

1.The SMT parts are often less costly than the comparable through-hole parts. The components are replaceable on both sides of the circuit board in higher density.

2.The SMT process is faster than through-hole technology because it does not necessarily require the circuit board for assembly, making its initial costs cheaper.

3.It reduces the unwanted effects of RF, which is the Radio Frequency, by lowering resistance and induction at the connection.

4.It has a smaller radiation loop area due to its compact package, and lower lead induction has better Electromagnetic Compatibility.

5.Allows multitasking by combining high-end components.

6.PCBs created with the SMT process provide higher circuit speeds because they are more compact, leading to many manufacturers opting for this method.

7.Surface Mount Technology provides stability and better mechanical performance under conditions like shaking and vibration.

5.1.Limitations to Surface Mount Technology

As much as the Surface Mount technology is excellent for SMD devices, we can clearly tell that it has its drawbacks. To get a clear glimpse of what we are talking about, let’s explore some of the demerits.

1.The surface mount technology components are quite small in size, making it challenging to repair them once any damage occurs.

2.There is no assurance that the solder connections can withstand the compounds used during potting application. The links may undergo damage when going through thermal cycling.

3.The solders can also be destroyed and weakened by mechanical stress.

4.With components that generate too much heat on their PCBs, the mounting soldering iron can melt off, rendering the whole device faulty.

6. Alternatives to SMD Technology

Although Surface mount technology is widely used and highly preferred, there are other alternatives such as the through-hole printed circuit board and the solderless breadboard technology that has been used for a variety of electronic devices.

6.1.Through-Hole PCB Design

Through-hole technology is a technique that uses the ideology of mounting the leads of electronic components onto the PCB by drilling through the circuit board.  These components are inserted into holes drilled on the printed circuit boards and soldered to pads on opposite sides. They provide a stronger mechanical bond and are suitable for test and prototyping.

6.2.Pin Grid Array

Often abbreviated as PGA, the pin grid technology works the same as through-hole technology. Pins form a rectangular or square array then mounted to the PCB via the surface mount technology.  These pins are later inserted into a socket and do not need to be soldered on to.

6.3.Solderless Breadboard

A Breadboard facilitates the building and testing of circuits before finalizing any circuit design. They are easy to change, as they are easily removable and adjustable. Most electronic manufacturers do not prefer this method because they do not have enough proper tools to design circuits with high voltage. It also jeopardizes your signal integrity when dealing with frequencies in the higher.

7. SMD Soldering

SMD soldering process

SMD soldering process

Historically speaking, we soldered SMDs by hand until the advent of pick and place machines. Because of their nature, SMD components are conducive to soldering.

They are perfect for first-time hobbyists who want to learn how to solder components to their PCBs. You can solder them traditionally, use solder paste, or flood with solder.

If machines do the soldering, the first machine in the process will be the solder paste printer. It applies the solder to the pad. After solder is applied,we perform an inspection.  

Next, we surface mount the components into the PCB pads. The PCB then goes through pre-reflow automated optical inspection where we ensure the integrity of the component placement process.

Next, the PCB will go through the reflow soldering machine where we form the connections between the components and PCB. Finally, the PCB will go through post-reflow automated optical inspection.

8. SMD vs. SMT

SMD and SMT are two terms that people sometimes erroneously use interchangeably. While the two terms are related, they are not really the same thing. Once again, SMD stands for Surface Mount Device, and SMT stands for Surface Mount Technology. SMD describes the type of component, while SMT describes how we place it on the PCB. SMT decreases manufacturing costs. It also saves space and time.


High power SMD white lighting LED assembly

High power SMD white lighting LED assembly

SMD are distinct because of their lack of wires. As with other SMD components, they have solder-able metallic contacts. SMD technology makes multi-color encapsulation possible. These types of LEDs will usually feature three colors (red, green, and blue).

You can also find SMD LEDs as top-emitting chips, right angle chips, sub-miniature chips, and reverse mount chips.   


 smd component chip for pcb

 smd component chip for pcb

A common feature of surface mount technology includes an absence of leads on components. However, sometimes these leads may be short. The main body of SMD components meets the PCB and solder joint on the same side. This makes for a seamless and easy connection.


Surface Mount Technology is instrumental and useful in the fabrication of electronic circuits on the Printed Circuit Board [PCB]. This design facilitates the production of better and easy to manufacture devices. SMDs are among the world’s most commonly used devices ranging from new generations of computers to phones and air conditioning devices, to name a few.

So whenever you need one SMD PCB for your electronic devices, reach out to our sales team and be assured of world-class services from us!

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