DFM/DFT/DFX Engineering Support

Quick Transfering "Product Ideas" to "Quality Products"

In assisting customers in transforming their product ideas into high-quality products, we adhere to our commitment to manufacturing quality, and we work together with our customers on Design for Testing (DFT) and Design for Manufacture (DFM), for achieving the mass production of high-quality products. we have won the recognition of our customers. To assist customers to trial run of new products. We share our customers ourextensive experience with various products and the latest manufacturing methods. We work closely with customer engineers from the very beginning of the design phase to ensure optimal manufacturing and assembly processes. Prior to mass production, our engineers will check and verify that there are no manufacturing defects that could adversely affect the functionality of the product.

Improving product design during the design life cycle

During the design process, a well defined DFM assessment can identify the potential issues that may affect product cost, yield, quality, and delivery. Our manufacturing engineering team will recommend the necessary design improvements to optimize all manufacturing functions such as manufacturing, assembly, testing, purchasing, and shipping.

DFM benefits

When designing a product, it is important to follow DFM guidelines from the beginning. There are many benefits to using DFM as the core of the product development process, such as:

• Improved quality and reliability
• Manufacturability and testability can be maximized
• Quick time to market
• Reduction of production costs

By utilizing DFM principles for product development and manufacturing to achieve Mmaximum benefits.

DFM is getting more important when technology and manufacturing locations are becoming more complicated.

With the technology becoming more complex and the manufacturing area more distributed globally, DFM is absolutely critical and inevitable in the planning of the early stages of manufacturing.

vvvvv

Disadvantages of not implementing DFM

If DFM is not implemented correctly, the common problems that usually occur are as follows:

• The production cost is too high

• Poor quality or defective products

• Issues during functional testing

• Poor production yield

Technology and manufacturing area are becoming more and more complicated, DFM is more important

As technology becomes more complex and manufacturing areas become more global, DFM planning in the early stages of manufacturing is absolutely critical and important.

Example of DFX:

Regarding to materials:

• Check whether your BOM is complete and correct, and whether the part has been out of the market or the delivery time is too long, take remedial measures in advance
• Perform a supply chain analysis and recommend purchasing replacement parts at extra cost if required
• Perform RoHS assessment to ensure compliance with specifications

Regarding the assembly and manufacturing of PCB circuit boards:

• Clarify required specifications (eg, IPC, military, aviation)
• Develop the manufacturing process and minimize the process
• Reduce manual welding
• Reduce the need to insert parts by hand

About software testing strategies:

• Build a test plan before the design begins
• Consider failure modes

PCB BGA Rework to assist engineer remedy the design erro

The most common problem that engineers have when designing new products is that the PCB design is wrong, but there is no time to re-spin the PCB. We have experienced and highly skilled technicians who can assist engineers to remedy PCB design problems, quickly modify samples, and complete samples as early as possible. We can also repair missing designs after mass production to help customers reduce costs.
In order to assist customers to effectively reduce manufacturing costs, rework is a professional capability that the professional EMS factories must have. We have rich experience in BGA rework, including disassembly, soldering, and replacement of various planting balls (µBGA, PBGA, CBGA, TBGA, CSP, LGA); solder mask, pad repair, reflow, etc.

For some rush product development schedule case, It is very common that the PCB prototype may not work at the first time, there are many reasons for the failure, it may be due to defect component, workmanship or design issue. The EMS company should has a very competent technician to verify the root cause of the failure, For the component failure can be fix by replacing the component. For workmanship issue, it can be repaired by circuit board rework. But only the design issue is very challenge to overcome, because there is no time for PCB respin.
At DDC we have some very competent and skillful technicians can do very highly complicated BGA rework/rebelling and repair/modifications of printed boards. This can help the customer’s engineer do functional demonstration of the new products. That is why many engineers are only prefer to do their job at DDC, they know they will get our great help them when they are in critical situation. They see us as their partner.