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Design for Manufacturing
Quick Table of Interconnection & Packaging
Material
- Wire Size vs. Electric Current
- Basics of Board, Substrate, Package, Flex
- Gold Plating
- Trace Attributes
Board Layout
- Bond-Pad vs. Wire
- Die-Mount-Pad Size vs. Die Size
- Better Trace Layout
- Geometry re Trace-End
- Obstacle Position, Away from the 2nd Bond-point
Process
- Assembly Process Concern
- Eutectic Attach and Epoxy Attach
- Mistakes & Advice on Board Preparation
- Assembly Issues and Answers
- Bond Variables
- Wire-Bond Quality Data
- Glob Top Encapsulation
Advance Concern: Wire Inductance
- Principles of Wire Parasitics
- Inductance of 2 Wires
- Wire Inductance Calculation, Simplified
- Wire Length for Inductance Concern
- Wire Inductance Table & Calculation, Realistic
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Tips for Better Chip Packaging
Product of 1 Die in a Unit
- Choose the rigid substrate
- Plan a module layout
- Make the Bonding Diagram in scale
- Plan for other SMDs on substrate
- Process chip packaging first; others goes second.
Product of 2~12 Dies in a Unit
- Design with specified cost and time criteria.
- Make a pre-prototype in modules.
- Make sure the prototype can be produced thru the multiple process & procedures.
- Share the design concept with us and allow us to contribute from the cost & packaging viewpoints.
- Allow us to join your prototype review to close the loop of "Design for Manufacturing".
- Set clear & realistic guidelines for the production capacity planning.
- Allow us to check the final release model and confirm the cost control.
- Remember that the open mind of true wisdom!
The entire project is a matter of collaborative effort.
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