Design for X refers to the use of a formal methodology to optimize
a specific aspect of a design. The variable X represents the areas of
focus. The design guidelines themselves propose an approach and corresponding
methods that help to generate and apply technical knowledge in order
to control, improve, or even to invent particular characteristics of
DFx Design for Excellence
Following is a list that defines the most common areas of DFx focus
and a brief description of these areas. This list is not meant to be
all inclusive nor would all necessarily be required on a specific product.
However, we evaluate each of these “X’s” in the Cypher Scientific design
methodology and in partnership with the customer determine which will
be stage requirements within a given design initiative.
DFM Design for Manufacturability
Guideline for designing new or revising existing designs of Printed
Circuit Boards and Printed Circuit Board Assemblies, as well as fabricated
sheet metal and other mechanical piece parts. It is focused on reducing
overall product costs and improving factory efficiency.
DFP Design for Procurement
Design the product to ensure that both the initial cost and total cost
of ownership are optimized. Design the product to ensure multiple sources
of supply are identified for all components where possible. Perform
risk assessments on single source items and long lead time items. Reduce
component numbers and system complexity to minimize the product and
maintenance cost while improving the reliability of the product. Focus
on lifecycle management and configuration stability over time.
DFSC Design for Supply
Design to improve the supply chain efficiency, inventory turn-over and
reduce lead times. Design for high assembly and manufacturing efficiency.
Design to improve the logistics efficiency, reduce the cost for product
logistics (packaging, transport, etc.). The product should be designed
to ensure full or maximum fault detection coverage at in- circuit, functional
and system test where applicable.
DFT Design for Testability
The group of design techniques we use to add testability features to
hardware product design. The premise of the added features is that they
make it easier to develop and apply manufacturing tests for the designed
hardware. The purpose of manufacturing tests is to validate that the
product hardware contains no defects that could otherwise adversely
affect the product’s correct functioning, safety and/or lifecycle.
DFF Design for Flexibility
Design the product to be scalable in capacity. The ease of expandability
should be taken into consideration from both a hardware and software
perspective. Design the product functions to be easy to modify or add
new functionality. The design should take the extensibility of the product
DFP Design for Portability
The product, both hardware and software, should be modular in design
to allow for maximum design portability and to aid in the testability
of future changes.
DFRU Design for Reusability
Both hardware and software should be designed with the consideration
for future reusability and optimization of the building blocks of the
overall design. The product should be designed for new technology integration
with minimal impact.
DFD Design for Deployment
This includes the structure to aid in delivery coordination, ease of
installation and documentation readiness. Ensure the product is structured
to be easy to identify upon receipt and order by the end user.
DFI Design for Interoperability
Design the product to ensure interoperability with related products
in the customers product line and from other suppliers.
DFP Design for Performance
Consideration of delay, throughput, bandwidth utilization, resource
utilization and all other defined performance characteristics are included
in design for best performance.
DFRC Design for Regulatory
Ensure that the design meets all regulatory requirements including technical
requirements (EMI, RFI, Power, etc.), safety requirements, materials
DFR Design for Reliability
Design reliability into products. This considers both hardware and software
reliability. This must considers MTBF rate maximization through designs
that minimize stress while providing maximum operational margins. Both
Hardware and Software fault tolerance are design considerations. Fault
detection coverage is also a consideration. Cyber Scientific’s focus
on HALT/HASS testing is an integral part of this requirement.
DFSA Design for Safety
Designing to eliminate or reduce risks in the final product or its operation
DFSE Design for Security
Minimize the security risk to the product and/or network operations
through design to ensure confidentiality, integrity and availability.
DFS Design for Serviceability
Improving the capability of installation, commissioning, and maintenance
through design. The product should be easy to use. Human Factors are
a primary consideration. Total Cost of Ownership is also included as
a design consideration.
DFSU Design for Sustainability
Design for high energy efficiency and low power consumption. Minimization
of the impact on the environment through both the manufacture of the
product, component selection and the long term operation of the product.
The product should be designed with recycling ease as a consideration
as well as disposability of any non-recyclable elements.
DFA Design for Assembly
Design for ease of assembly, minimization of fixturing, cycle time reduction
and lean assembly practices.
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