Aster Technologies - TestWay Express explores "yield estimation"

production yieldASTER Technologies , announced a new "yield estimation" feature, added to the TestWay Express test coverage analysis tool.

The issue of calculating first pass yield (FPY) and other IPC quality metrics has become ever so important in light of the increase in subcontracting the production of high technology products. Project teams and their leaders need accurate estimates of new product yields to plan and budget for test, troubleshooting equipment and engineering resources. In addition, management needs to benchmark potential suppliers in order to determine their manufacturing quality.

In quality based test models, the cost of test is derived from FPY defect prediction based on the quality analysis of the product design and each step of the manufacturing process. For all the cost drivers, parts per million (PPM) defect rates are calculated for each manufacturing process operation. The defects generated are then summed up to the product level and the best test strategy is developed for reducing the overall test and troubleshooting costs.

The key metric in understanding the quality of a delivered product is the "slip", or "escape rate". An "escape" is a defect that has not been captured by the test process, but instead is detected by the end-customer. When defects are exposed by the end-customer, they are quite costly and are liable to damage the company reputation.

TestWay Express can now estimate the production yield by importing the defects per million opportunities (DPMO) expressed as PPM, in real time from the manufacturing process and tune the manufacturing test strategy to provide the optimal test coverage to identify the defects for any given product and minimize the slip. Because a board test passes, it doesn't necessarily mean that the board is good, since the test coverage could be extremely poor. So it is increasingly important to link defects using IPC quality metrics with test coverage within TestWay Express.

Test coverage is estimated using theoretical models for a wide range of test and inspection strategies such as APM, AOI, AXI, BST, FPT, ICT etc, and Functional Test, that can be tuned to reflect the test and measurement capabilities of the target tester. Once the test/inspection programs have been completed, TestWay Express can read the debugged test program or test report and compare the coverage between the estimated and measured analysis using industry standard metrics, and identify any misalignment.

More than 45 coverage importers are available for a wide range of the test/inspection machines used within the industry such as Agilent Technologies (i1000, i3070, 5DX, SJ10, SJ50); Checksum; Göpel (CASCON, OPTICON); Mydata; Takaya (APT8000, APT9000); Teradyne (Z1800, Spectrum, GR228x, TS124); and many more.

Please use this link for further information on Yield, test coverage and DFT.

Request information

 

Latest News

twitteryoutube

june-2015
Electronics & Automation 2015
Visit us in Utrecht, June 2-4
more...


6-may-2015
Data I/O - Device Programming
The New PSV5000 - Affordable Automated Programming System
more...


27-apr-2015
Huntron - PCBA Repair Tools
New Tracker 3200S
more...


11-sep-2014
Workshop Inspection Xpress
Eindhoven, September 11


14-aug-2014
Semi-Auto Heavy Wire Bonder
TPT HB30 for 100μ to 500μ wire
more...


7-aug-2014
ADT 7120/7130 Dicing systems
New Models for an on-going Success
more...


17-june-2014
Takaya Flying Probe Test Day
APT-1400F - Benelux Launch.
Eindhoven, June 17


8-may-2014
Goepel 3D AOI Technology
3D shadow-free measurements of solder joints and components
more...


Accelonix News Archive