Circuit Card Assembly 1 (168)

Circuit Board Assembly

We are a professional circuit board assembly .anufacturer providing services such as through hole PCB assembly, SMT PCB assembly, mixed PCB assembly, turnkey PCB assembly, box build assembly since 2000.

Circuit Board Assembly

Circuit Board Assembly definition

After all the components have been soldered and mounted on a circuit board, the finished board is known as a circuit board assembly (PCBA). The assembly is created by using the conductive paths carved in the laminated copper sheets of PCBs inside a non-conductive substrate. The final step in creating an electronic gadget that is fully functional is attaching the electronic components to the PCBs.

Circuit Board Assembly Services

Our 120,000 square foot facility, equipped with the best Fuji assembly line, enables us to provide premium PCB assembly at cost-effective rates.

We take great delight in having received certification for ISO 9001, TS16949, UL, Rohs, IPC 2, and IPC 3. It shows that we offer quantifiable, high-quality, customer-focused electronic contract manufacturing services.

We have what it takes to effectively handle your complete project, whether you need Printed Circuit Board (PCB) assembly, consignment assembly, or turnkey material-procurement assembly. With more than 20 years of experience in the Electronics Manufacturing Services (EMS) industry, we have discovered that reasonable assembly costs, excellent service, prompt delivery, and effective communication are the secrets to keeping our clients happy and how we have successfully grown our company.

When it comes to serving your needs, INTOPCB is adaptable. Since 2000, we have provided Lead-Free (Pb-Free) soldering. Please evaluate the RoHS compliant (Lead-Free) assembly’s Design to Avoid Tin Wiskers.

As an electronic contract manufacturing service provider, we offer services ranging from box builds to product design. We can give you services below:

  • SMT assembly,
  • prototype boards builds,
  • PoP (Package on Package),
  • Through-hole and mixed board assembly,
  • PCB thru-hole assembly,
  • Mixed component assembly,
  • PCB fabrication,
  • GA (Ball Grid Array) assembly ,
  • Flex Circuit Board assembly,
  • Conformal coating service,
  • Box build assembly,
  • Component sourcing and so on.


Circuit Board Assembly Process Flow

There is 8 important steps of Circuit Board Assembly:

Step 1: Stencil making

Before start the assembly work, you need to make a stainless steel stencil. It would be use to make the precision solder paste printing.

Step 2: Solder Paste printing

Applying solder paste to the board is the first stage in PCB assembly. Similar to screen printing a shirt, the PCB is covered with a thin stainless steel stencil in this procedure. In doing so, assemblers are able to apply solder paste solely to specific areas of the potential PCB. In the final PCB, these components will house the components.

Step 3: Pick and Place SMD

The PCBA process continues with the pick and place machine, where a robotic device installs surface mount components, or SMDs, on a prepared PCB, after applying solder paste to the PCB board. Currently, SMDs make up the majority of non-connector components on PCBs. In the following phase of the PCBA process, these SMDs are subsequently soldered to the board’s surface.

Step 4: Reflow Soldering and solidified

Surface mount components and solder paste must stay in place once they have been assembled. As a result, the solder paste must harden before components can be attached to the board. Reflow is a technique used in PCB assembly to achieve this.

Step 5: Inspection Quality

After the surface mount components are soldered in place following the reflow process, the PCBA is not yet finished, and the assembled board needs to be functionally tested. Movement during the reflow process frequently causes a connection to be of poor quality or to be lost entirely. Since displaced components occasionally join parts of the circuit that shouldn’t connect, shorts are another frequent side effect of this movement. Inspection methods would be Manual Checks, Automatic Optical Inspection (AOI), X-ray Inspection.

Step 6: Through-Hole Component Insertion

Plated through-hole, and PTH components are the aspect of Through-Hole assembly. A PCB hole that is fully plated throughout is known as a plated through-hole. To transmit a signal from one side of the board to the other, PCB components use these holes. Soldering paste will be useless in this situation since it will pass directly through the hole without having an opportunity to bond.

Step 7: Wave Soldering

Although wave soldering uses an automated method, it is substantially different from manual soldering. The board is placed on yet another conveyor belt after the PTH component has been installed. This time, a wave of molten solder ishes across the board’s underside as the conveyor belt passes past a specialist oven. With this, all of the pins on the board’s bottom are soldered at once. For double-sided PCBs, this kind of soldering is practically impossible because soldering the entire PCB side would leave any delicate electronic components worthless.

Step 8: Final Functional Test

The PCB will be functionally tested after the soldering stage of the PCBA process is complete. A “functional test” is what is being performed here. The test puts the PCB through its paces while imitating the typical operating conditions. In this test, the PCB is exposed to power and simulated signals while electrical properties are observed by testers.

Why we can make high quality circuit board assembly for you?

At Intopcb, we have more than 22 years of experience in the field of electronics technology. We can provide the best quality and most effective printed circuit board (PCB) assembly services in the market since our high-tech capabilities have kept up with the digital world. We have met the most challenging needs for clients in the most demanding industries by providing PCBs for all kinds of equipment. These have, among other things, included the military, instruments, medical equipment, transportation, and professional audio.

There is an extensive selection of turnkey PCB fabrication options. Among these are surface mount technologies that are especially suited for precision, adaptability, and quickness. For projects ranging from the straightforward to more complicated boards requiring hundreds of components, we also offer pin through-hole assembly. Ball grid array (BGA) assembly, burn-in, conformal coating, RTV encapsulation, and flexible circuit assemblies are further capabilities. We frequently assemble PCBs in FBGA, LGA, and QFN package sizes, as well as rigid, flexible, rigid/flexible, single- and double-sided PCBs. We work with PCBs that range in size from 2″ to 18″ in both length and width, and from.031″ to.125″ in thickness.

Without our extensive inventory of cutting-edge machinery, none of our high quality PCBs would be feasible. Convection reflow ovens, ionic contamination testers, Juki pick and place tools, dispatch ovens, desiccant chambers, and a number of other systems are among them. We produce items in batches ranging from prototypes to large numbers, with lead times of only two weeks on average. Numerous certifications, including ISO 9001, TS16949, UL, Rohs, IPC 2, IPC 3, and many others, attest to the high caliber of our work.