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We provide a range of Design Services as per customers varying needs.
· PCB Layout Design
· PCB Fabrication
· PCB Assembly Services
PCB Layout Design
PCB Layout design process generally starts with Circuit Schematics that have been captured using a Schematic Capture package like ORCAD. Such a package will provide the requisite Schematics and Net-List files.
In case you have not entered your circuit diagram into a popular schematic capture software, but have it available hand-drawn on paper or as graphic file, then the Layout designers will capture the schematics on a Schematics capture package.
There are several SIGNAL INTEGRITY related issues in Layout Design. Some critical portions of the circuit may need special layout design considerations. Certain signals may need to have strict length constraints due to controlled timing delay requirements. Some signal lines may need to have well defined Characteristic Impedance and/or constraints on parasitic capacitance or inductance. Some signals or circuit portions may need to be specially routed so as to minimize the electromagnetic radiation susceptibility, interference and noise.
As a general rule, more complex or high frequency the design is, the greater are the SI issues. Here is a list of some of the factors that influence the layout design:
· Circuit type- Whether the circuit is completely Digital or completely Analog, or Mixed Signal?
· Maximum Frequency used
· Is it an RF circuit?
· Impedance control requirements
· Differential pairs, Length and delay control
· Parasitic
· Split Planes
· Net Shielding
It is therefore important to make the layout designer aware of all such issues, to ensure that the critical signals are given special treatment and all the circuitry functions as per desired specifications.
PCB Fabrication
· Multi-Layer PCBs from1 to 40 layers
· Quick-Turn Prototypes
· 100% Electrical Net List Testing/ Verification
· Simple to medium to high complexity boards
· Various Solder mask, gold plating , silkscreen options
· Impedance and Dielectric Control: At the PCB fabrication stage, these controls need to be adhered to so that the designers' parameters are met.
· Various PCB Materials: FR4, Rogers, Nelco SI, Getek, Ployimide etc.
PCB Assembly Services
· Surface Mount and Through-hole
· Both side Components
· Fine pitch components
· BGAs and microBGAs - X-Ray Inspection
· Consignment & Turnkey
· Box / Chassis design, fabrication & assembly
Full Design Documentation
· Circuit Schematics & Net-Lists
· All electronic data files including databases, libraries and CAM files
· Fabrication and Mechanical drawings
· Prints and/or plots of all artworks: Films can also be made available
For details of our PCB design processes, visit PCB Design Processes section.
To learn more on the requirements for placing an order with PCBDesignExpress.com, visit out PCB Design requirements section.
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For details of our entire design services portfolio, click here.
PCB Design Express
1068 West Evelyn Avenue
Sunnyvale, CA 94086
Send files at files@pcbdesignexpress.com
Contact us at 408-731-2550; Fax: 408-731-2551
Email at sales@pcbdesignexpress.com
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