EMI ENGINEERING SERVICES DEPARTMENT ADDS VALUE
With a heritage of nearly 3 decades of lessons learned in Electronic Manufacturing Services, Express Manufacturing, Inc. will leverage its intelligence through experience to ensure that your product not only performs as intended, but that it can be manufactured in the most expedient and cost-effective manner. The value that you expect is a team of EMI Engineers who collaborate with your design team to achieve the common goal of removing non-value-added activities from production and providing a quality product with the greatest efficiency at the lowest cost.
EMI ENGINEERING SERVICES
Design for Assembly - (DFA) - requires developers:
- To assess whether each part is necessary
- To consider the time and cost of assembling the product
Design for Manufacturing - (DFM) - offers the greatest benefit when used early in the conceptual stage of a design
By using DFM/A, developers can pin-point parts and assemblies that add unnecessary costs to a product and then design to avoid them
COORDINATION OF DESIGN AND PRODUCTION ACTIVITIES
Development teams must strike a balance between form, fit & function as well as the DFM/DFT/DFA (Design for Manufacturing, Design for Testability, Design for Assembly) guidelines
DFM and DFT are considerations that affect component placement, inspection & testing.
- Component placement and testing are two primary cost drivers in the circuit assembly process
- DFM incorporates the manufacturability of a product into the product development process
DFM/DFA IS A COMPLETE CONCEPT INVOLVING:
- Up-front customer commitment
- Post lay-out concerns
- Understanding of fabrication and assembly parameters
DESIGN CONSIDERATIONS
DFM/DFT/DFA is the ultimate way to add value
Integrate information about manufacturing processes and estimates manufacturing costs and to make informed decision about materials
Potential difficulties in the downstream manufacturing are eliminated in the design and prototyping stages
Such strategy may require additional time investment in the prototyping process
Immediate advantages:
- Decreased scrap rates
- Reduced manufacturing costs
- Less rework
- Increased product quality
- Quicker turn-around times
EMI ENGINEERING SERVICES
- PCB Layout Services
- Production Component Engineering Services
- Test Fixture Implementation
- ICT test fixture
- Functional test fixture
PCB LAY-OUT
Design for Cost Effectiveness, Testability & Manufacturability
Seamlessly transfer customer design from schematics to lay-out design to PCB fabrication
Suport early BOM exposure, evaluating turnkey materials and PCBA assembly
Supported through strong partnerships with local and off-shore PCB fabrication houses, ensuring up-front cost effective PCB design
DESIGN EXPERIENCE:
- High speed digital; Mixed signals
- High density layer stack-up
- EMC consideration
- Noise minimization
- Controlled impedance
- Differential pairing
- Matched length
- Daisy-Chaining
- Design CAD software
- Lay-out software -- Mentor Graphics PADS Power PCB
- Schematics capture – PADS Designer; Orcad Capture
- Design Process – typical milestones:
- Quotation review – Layout vs. layout plus assembly
- Mechanical, component spec, design guideline review
- Placement review
- Critical routing review
- Full routing review
- Fabrication & assembly drawing review
DELIVERABLES:
- Lay-out design per customer supplied specifications
- QC Gerber files on all layers
- Fabrication and Assembly drawings
- Complete native CAD data file
- CAD data file for manufacturing
- Netlist compare, DRC reports
COMPONENT ENGINEERING SERVICES
Recommends alternate components:
- Cross to lower cost manufacturer
- Cross to shorter lead time and better availability
- Cross to lower risk components
ASSISTS DEVELOPERS IN EVALUATING ALTERNATE PARTS
EXPERIENCE:
- Partnership with regional suppliers
- Partnership with off-shore suppliers
- High-mix production experience
- Database for component crossing
THE PROCESS
- Review customer’s BOM, AVL integrity
- Gather and centralize all customer-approved AVL specs for world-wide access via FTP site
- Identify alternates for non-AVL parts
- Identify fabrication parts/customer parts for off-shore review:
- Set priorities, research & review specs on potential alternate parts
-
If preliminary research shows positive inputs -> get samples, quote and identify alternate part cross nature (DI, FE, SD)
- Identify overall target cost
- Stuff samples into board for customers final approval
TEST FIXTURE IMPLEMENTATION
THREE TYPES OF TESTS AND TEST FIXTURES:
- ICT test and test fixture development
- Functional test and test fixture development
- JTAG - Boundary Scan test and test fixture development
ICT TEST DEVELOPMENT:
- EMI builds ICT fixtures and creates test programs
FUNCTIONAL TEST AND TEST FIXTURE DEVELOPMENT:
- Typical software test programs are developed by customer
- EMI designs fixtures for test automation and test time minimization
- EMI integrates hardware fixture with with customer’s test software
- EMI collaborates with customer to enhance product’s test procedure/flow for production effectiveness
JTAG TEST DEVELOPMENT:
- EMI builds JTAG fixtures and creates test programs
TECHNOLOGY EXPERIENCE
TELECOM/DATA COM
- Internet access devices – DLS/ ADSL
- LAN/WAN products
- Pagers/ cell phones
INDUSTRIAL/MEDICAL
- GPS systems
- Medical electronics
- Security devices
- Test equipments
AUTOMOTIVE
- GPS and vehicle tracking devices
- Automotive audio devices
COMPUTER/COMPUTER PERIPHERALS
- PCs, Notebooks, Docking stations
- Printers, Fax machines, Modems
- Retail scanners
OTHERS
- Audio/video
- POS terminals
- Consumer electronics
ADDITIONAL SERVICES – NPI
NPI PROTO-TYPE SERVICES:
- Board Lay-out
- PCB Fabrication
- Component Sourcing
- Component Procurement
- Engineering Documentation
- Quick-Turn Turnkey Assembly
- 24 hours - 7 days Project Management
NPI PROCESS FLOW-CHART:
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