Advantages of Design for Manufacturability Rules

Design for Manufacturability (DFM) is an approach to fabricating and manufacturing printed circuit boards (PCBs) that reduces costs and makes PCB manufacturing a seamless process by applying a set of rules for the PCB designer to follow such that the typical PCB manufacturing processes, equipment, requirements and limitations are considered in the design.

Problems with PCB Designs That Do Not Consider Manufacturability

PCB Parts Procurement: Not all the specified PCB components and materials are available at the time a PCB order is placed. This frequently happens because there are many different types of PCBs such as flex, hi speed, radio frequency, hi temperature and RoHs, and all of them use different types of parts. In addition, component manufacturers may produce the same PCB parts with different specifications. It is important to confer with a PCB supplier to verify which specified parts are available, as well as what parts could be used as replacements. Without considering the procurement of PCB parts, lead times can be unnecessarily long. The optimal approach is to choose components that match the requirements of a PCB design and are readily available.

How Manufacturing Tolerances Affect Stack Up: Target impedance or stack up can vary due to the manufacturing tolerances of a specific PCB manufacturer. You should verify a target impedance with your PCB supplier because adjustments may need to be made to the PCB due to manufacturing tolerances. It is important to note that specially ordered materials can cause the total cost of manufacturing to increase with a corresponding increase in delivery times. It is always a good idea to discuss stack up concerns with your PCB supplier prior to finalizing your design.

Yield Issues: When printed circuit boards are designed with plane and signal layers that have the same specification, what usually results is an unnecessarily complex design that creates yield issues, which can increase the cost of PCB fabrication.

Data Files Without an IPC-356A Net List: When data files are exported to a PCB manufacturer, the data transmission can be corrupted or contain errors. To verify the PCB design contains no errors, an IPC-356A net list is required. This net list enables your supplier to check the Gerber files against the CAD database. If you do not have IPC-356A Net List, an important quality check cannot be conducted.

Keywords:

SMT Reflow Oven, Lead free Reflow Oven, Reflow Oven Manufacturer, LED reflow oven, PCB Reflow Oven, Nitrogen Reflow Oven, Dual Rail Reflow Oven, China Reflow Oven, wave soldering machine, Dual Rail Wave Soldering Machine, Nitrogen Wave Soldering Machine, Wave Soldering Machine Manufacturer.

Flason Electronic Co.,ltd provide a full SMT assembly line solutions, including SMT Reflow Oven,  Wave Soldering Machine,  Pick and Place Machine,  SMT Stencil Printer,  SMT Inspection Machine,  SMT Reflow Oven,  SMT Peripheral Equipment,  SMT Assembly line,  SMT Spare Parts  etc any kind SMT machines you may need, please contact us for more information: wechat whatsapp:+8613691605420, Skype: flasonsmt, Email: sales@flason-smt.com
FAQ
1) This is the first time I use this kind of machine, is it easy to operate?
There is English manual or guide video that show you how to use machine.
If you still have any question, please contact us by e-mail / skype/ phone /trademanager online service.
2) If machine have any problem after I receive it, how can I do ?
Free parts send to you in machine warranty period.
If the part is less than 0.5KG, we pay the postage.
If it exceeds 0.5KG, you need to pay the postage.
3) MOQ ?
1 set machine, mixed order is also welcomed.
4) How can I buy this machine from you? ( Very easy and flexible !)
A. Consult us about this product on line or by e-mail.
B. Negotiate and confirm the final price , shipping , payment methods and other terms.
C. Send you the proforma invoice and confirm your order.
D. Make the payment according to the method put on proforma invoice.
E. We prepare for your order in terms of the proforma invoice after confirming your full payment.
And 100% quality check before shipping.
F.Send your order by air or by sea.
5)Why choose us ?
A. SMT Assembly Line Total Solution !
B. Life Time Techinical Support !
C. Free Online Training Installation Service !