ELECTRONIC PRODUCT DESIGN
Module 1
Design for Manufacturability
Introduction
Design for manufacturability is the process of proactively designing products to (1) optimize all the manufacturing functions: fabrication, assembly, test, procurement, shipping, delivery, service, and repair, and (2) assure the best cost, quality, reliability, regulatory compliance, safety, time-tomarket, and customer satisfaction.
Design for ManufacturingDesign Manufacturing(DFM) refers to design (activity that is based on minimizing the cost of production and/or time to market for a product, while maintaining an appropriate level of quality. A primary strategy in DFM involves minimizing the number of parts in a product.
Yield analysis determines the percentage of acceptable and unacceptable units based on a certain specifications (YieldSpec).
Time to market
In commerce, time to market (TTM) is the length of time it takes from a product being conceived until its being available for sale. TTM is important in industries where products are outmoded quickly. A common assumption is that TTM matters most for first-of-a-kind products, but actually the leader often has the luxury of time, while the clock is clearly running for the followers
Delayed time to market
Faster time to marketReduce time-to-market continuously Eliminate wasteful steps and processes Install and use a formal, written phase design review process Ensure quality control and escalating management approval for exiting each phase of the design process Prepare product specifications and control the changes
Efficient resource management Having a reliable timeline will allow you to prepare in advance for transportation times and costs, build schedules based on part lead times and headcount planning to satisfy the needs in various project phases. Predictable schedules and launch dates The product development process is long and complicated. If you can accurately predict when your product will ship, you can take advantage of tradeshows, holiday buying seasons and other marketing opportunities. Increased total revenue The earlier you get your product to market (without cutting corners or compromising quality) the greater the revenue you can generate because your product faces less
Need for DFM Why DFM? Lower development cost Shorter development time Faster manufacturing start of build Lower assembly and test costs Higher quality
DFM guidelinesMaximize compliance Minimize handling.
Development of DFM Rules:
Exceptions.
Simple Assembly Process Vs. Complex
Simple Assembly Process Vs. Expensive components
Simple Component Manufacture Vs. Complex Manufacturing Process
Simple and Inexpensive Design Vs. Expensive and Complex Service and Support
