Design For Testability (DFT) is an expert in the SOC design cycle, which facilitates a design for detecting production defects. With the increase in size & complexity of chips, assisted by the progression of manufacturing technical advancement, It has evolved as a expertise in itself over a period of time. DFT Engineers, works on presenting various test components as part of the design flow, to improve the testability of logic, pads, memories, interconnects. For design for testability contact to vayoinfo @ http://www.vayoinfo.com/design-for-testability/

1. intelligent software, pleasant work
www.vayoinfo.com
Design for Testability
Towards Industry 4.0 & IoT

2. Are you always willing to stay with those issues?
1
2
3
Design
• No thermal consideration, small annual ring
small, silkscreen error, Silkscreen
incomplete, …
• >30% PCB design comes with problem.
Manufacturing
• Short, open, tombstone, cold sold, Void, …
• >60% defects could be found prior to build
Post sales
• sold joint crack, sold joint peeloff, …
• Repair rate for consumer product:
5%~37% in initials 3 years
4
6
Equipment programming
• Wrong polarity, location offset, inline fine-
tune, …
• Lower test coverage, lower utilization, …
NPI cycle
• Frequent prototyping, high cost
• Long cycle, impact time to market, …
Process design
• Difficult to transfer knowledge
• No effective tool to continually improve process
capability
• …
5
IPC research: 80% defects could be found and resolve during NPI stage.
Quality defects, reliability issue, process headache, business risk

3. Change from NPI
Past Yesterday Today
Above issues puzzles most of us. Vayo customer solved this issue.
Ex.: Intel/Venture/SurfaceArt/Bosch…
They may still happen at your side.
Intelligent Vayo NPI software makes manufacturing more agile and smart!

4.  Founded on Jan of 2005, headquarter in China/Shanghai;
 Dedicates to intelligent NPI software to accelerate design to manufacturing;
 Fully in-house development, owns copyrights and patents;
 Product installed >20 countries and regions worldwide;
 Strategy partnership with equipment and EDA provider: Keysight/ViTrox/TRI/Fuji/Panasonic/Altium…
>10 years dedication on NPI technology brings up the world-class product.
Company introduction

5. Intelligent DFx
analysis
PCB layout Eng.,
process Eng.
NPI Eng.
Fast placement
programming, support
Fuji, Panasonic, ASM,
Juki, Yamaha…
SMT programmer
DFT/Testability,
ICT/FP/AXI/AOI
programming
Testing Eng.
DFM Expert & DRC+
Other NPI sw
SMT Expert/
Accelerator
Test Expert
Document
Expert
Work instruction
document
preparation
Process Eng.,
Industry Eng.
Board troubleshooting,
Gerber conversion,
assembly drawing, NPI
team collaboration
Debug tech,
others…
 Reduce design & mfg cycle: 30%-70%
 Reduce quality defects: 30%+
 Increase reliability: 30%+
 Increase design and mfg efficiency: 40%+
 Reduce design and mfg cost: 20% +
* NPI：New Product Introduction
Core product: Intelligent NPI software for PCBA

6. Thanks!intelligent software, pleasant work
www.vayoinfo.com