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Debasish Choudhury
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Special Topics: Lean manufacturing & Six Sigma
Lean manufacturing considers the expenditure of resources for any goal other than the creation of value for the end customer to be wasteful, and thus a target for elimination. "Lean" is centered around creating more value with less work.

Six Sigma, using a set of quality management methods, seeks to improve the quality of process outputs by identifying and removing causes of defects and variability in manufacturing. Each Six Sigma project carried out within an organization follows a defined sequence of steps and has quantified financial targets--cost reduction or profit increase.

Kaizen, Japanese for "improvement", focuses on continuous improvement in manufacturing activities.

Statistical Process Control (SPC) is an effective method of monitoring a process through the use of control charts.

Learn about these and other business and process improvement tools and philosophies here.
Articles & Papers
EMS
Monday, June 8, 2009Lean Sigma, an approach that has been in practice for several years, mixes the lean manufacturing concept and problem solving approach with Six Sigma for a more efficient manufacturing process.

Tools & Methods for Lean Production Management in EA
Monday, June 16, 2008Lean manufacturing is far from a new concept, and many within the electronics assembly (EA) industry are already familiar with the principles and concepts behind it.

SPC and usage difficulties in SMT
Tuesday, November 18, 2008The idea of monitoring manufacturing processes using statistical methods goes back to the 1920s when Walter A. Shewhart, an American physicist, engineer and statistician, was engaged by the Western Electric Company in Chicago to find a way to produce their products with a certain quality level. 

Placement optimisation in a lean manufacturing environment
Wednesday, February 6, 2008Tier 2 and Tier 3 EMS companies face increasing pressure from competition in low-cost manufacturing countries to produce assembled boards at lower cost, with increased complexity and to tighter deadlines.

6.10 – Inventory management: combining business intelligence & material handling hardware
Monday, January 8, 2007Most business intelligence (BI) tools and supply chain management (SCM) applications address inventory issues from either a software perspective or a material handling perspective;.
Efficient line changeover: the key to lean manufacturing
Monday, April 6, 2009Changes in the domestic printed circuit board assembly industry have resulted in a dominant shift to a high-mix, low-volume (HMLV) manufacturing environment resulting in a high frequency of line changeovers.

Solder-bearing RF shields streamline PCB assembly, reduce costs, improve quality and eliminate signal leakage
Thursday, October 31, 2013This Tech Bulletin addresses the specific challenges involved with soldering RF shields to PCBs and explains how using solder-bearing technologies to pre-apply solder to the shields can significantly improve assembly processes and productivity, while enhancing quality of the final product.  
This issue has become especially important with the widespread requirements for RF shielding that is used in small form-factor products such as Smartphones, tablets and other handheld devices that require consistent quality within very high-volume production environments.

Nanotechnology and mathematical methods for high–performance thermal interface materials
Monday, June 16, 2008Higher power chips have resulted from a variety of new developments in the electronics industry.

 

Parts management
Tuesday, January 4, 2011Almost 30 years after the fact, we’re still asking PCB designers to “build their own fonts” (so to speak) on a daily basis, to great expense.
 
Videos
Hitachi at IPC APEX Expo 2011
Matt Wyglendowski introduces the new Sigma platform from Hitachi. The focus of the machine is flexibility, high speed placement and accuracy, and offers one of the largest component ranges in the industry.
MYDATA Automation at IPC APEX Expo 2009
Brian Duffey introduces the Flow Line for lean manufacturing.
Valor Division of Mentor Graphics Corporation SMT/HYBRID/PACKAGING 2011
Michael Ford shows off some interesting new materials management products from the Valor Division of Mentor Graphics, which are of incresaing interest to manufacturers during this time of component and materials shortages.
CES14 Audi
Global SMT Columnist Phil Stoten speaks to Marcus Keith, GM, Project Management for AUDI at CES 2014 in Las Vegas
Cogiscan at productronica 2011
Trevor Galbraith interviews André Corriveau, Co-President, Product Management of Cogiscan at productronica 2011 in Munich
Vi Technology at SMT/HYBRID/PACKAGING 2010
Chris Davies, Vi Technology's sales director, shows off the 5K Perform for high-quality, high-reliability detection for boards up to 535 mm square. Equipped with Vi Technology's proven vision technology, it can inspect components down to 01005.
DEK at SMT/HYBRID/PACKAGING 2011
Stefan Techau talks about the three new highlights of their product range: ProActiv, which enhances print quality; Nano-ProTek for coating stencils for improved yield; and HawkEye inspection software.
MVP at APEX IPC Expo
Machine Vision Products had five new product offerings, including the MVP Ultra V which has an accuracy of 3-5 µm, an 8 megapixel camera and a speed increase over its predecessor of 40 percent. The Ultra SPI system is a combination of 2D and 3D with a speed reaching 5" per second. The system uses real-time data resulting in very low false call rates. Another new introduction is the ID Code for bottom side inspection of selective soldering inspection and bar codes. MVP also launched two line management software systems. For more information, please visit: www.machinevisionproducts.com Video Editor: Elisangela Dahlke
WKK TECHNOLOGY PARK
From humble beginnings as a tiny single sided PCB shop in the early 50's, Hong Kong based Wong's Kong King International (Holdings) Limited (WKK) has today become one of the largest electronics industrial equipment distributors in Asia under the stewardship of Chairman and CEO Mr. Senta Wong. Its Electronics Manufacturing Services (EMS) business of WKK Technology Ltd. (WKKT) pulls rank as the world's Top 17th EMS business in 2005, when it made a quantum leap from its 23rd position in 2003. WKK is an EMS company which provides manufacturing services to global customers in the USA, Europe, Japan and Asia Pacific. For us, international certification is critical so there is "common understanding" regarding Quality Level and System which is what WKK strongly stands by. WKK have a specially built leisure facility for their workers and test sources of water and food for their health and wellbeing. They also take care of their people by providing clinical services, convenience store, gymnasium, computer/library, theatre/TV rooms etc. They wholeheartedly encourage everyone to develop whole person skills as they provide ample training and job rotation opportunities. For more information, please visit: http://www.wkkintl.com
From our Columnists
Thermal management, part 2
Friday, August 12, 2011Last month opened this discussion of thermal management, providing background as to the importance of thermal management predicated on transistor density increase, and the rise in on-chip frequencies that are combining to increase thermal energy densities on the IC.
Thermal management, part 1
Wednesday, July 6, 2011As chip features shrink, transistor density increases, on-chip frequencies rise, and so also do the thermal energy densities on the IC.
 
 
Latest SMT Answers questions
There are no questions related to this area at this time. Visit the SMT Answers section to ask your own or explore questions from other process areas and topics.
Latest Products
PARMI announces new SPI defect repair feature for SIGMA X
Friday, August 29, 2014PARMI, a leader in 3-D solder paste inspection (SPI) of printed circuit boards announces the Jet Solder Jet Dispenser Unit for its award-winning SIGMA X SPI Series. Jet repairs solder paste deposits within the machine to eliminate expensive rework and scrap, maximizes throughput and increases ROI.
Automotive supplier Hella inspects with GOEPEL electronics X-ray systems at three locations worldwide
Thursday, August 14, 2014HELLA, one of the largest automotive suppliers for lighting technology and electronic products, uses X-ray systems of GOEPEL electronics for testing automotive electronics assemblies in production at three locations worldwide. After using “X-Line 3D” inspection systems at subsidiaries in Germany and Romania, a US-based facility is the third place for quality inspection of solder joints and components with GOEPEL electronics X-ray inspection (AXI) systems.
Ersa introduces i-CON soldering stations family
Tuesday, August 12, 2014Kurtz Ersa North America, a leading supplier of electronics production equipment, offers its customers a unique range of professional soldering stations – the Ersa i-CON family!
All soldering and de-soldering stations of this family are marked by their excellent performance and quality. With the i-CON family, every demanding user in production, rework, maintenance, and even hobbyists will certainly find the right product.
IPTE handling equipment for clean room use
Monday, August 11, 2014IPTE extends its material-handling portfolio with a version for the use in clean rooms according to the ISO/DIS 14644-1 Class ISO 5. The equipment includes modules for the efficient handling of products in manufacturing lines and assembly them according to customer requirements. The key targets for the design of the new handling and processing units program have been the highest of demands on the quality and reliability of this equipment.
Machine vision cameras with SDK from only EUR 89
Tuesday, August 5, 2014The cameras ship in a small, but highly robust zinc and aluminum industrial casing with an S-mount (M12), a 1/4 inch CMOS sensor and USB 2.0 interface with cable. The sensor integrates image optimization algorithms directly on the chip, which ensure that the video stream always has the best image quality and color reproduction even under the harshest lighting conditions.
Technifor introduces their new laser marking machine, the TF450!
Monday, August 4, 2014This compact, high-performance fiber laser solution for direct part marking has the ability to integrate into a production line and mark twice as fast as the 30watt version, sending the TF450 to the forefront of the industry. Fitted with a fiber laser source, it takes advantage of all the benefits including: a very long lifetime, consistent marking quality, minimized integration costs and reduced maintenance. Production cycle time is also reduced and ensures increased productivity to industrial site Managers.
Data I/O introduces PSV3000 automated programming system for Asian markets
Thursday, July 31, 2014The PSV3000 automated programming system is the cost-effective entry point for high-quality Data I/O programming.  The PSV3000 delivers trusted performance, high reliability and local support at a great value.
Data I/O Corporation (NASDAQ: DAIO), global provider of advanced programming and IP management solutions for flash, flash-memory based intelligent devices and microcontrollers, announced the release of the PSV3000 automated programming system.
Chemtronics® introduces new full-line product catalog
Monday, July 28, 2014Chemtronics, a supplier of high quality cleaners, coatings, and electronic rework tools, has released their 2014 full-line product catalog. The catalog includes information on industry-leading brands like Chemtronics, Soder-Wick®, CircuitWorks®, Coventry®, and FOCCUSTM.
Chemtronics® launches Chemask® HT and Chemask® Aqua to improve PCB assembly processes
Tuesday, July 22, 2014Chemtronics, a supplier of high quality cleaners, coatings, and electronic rework tools, has introduced two new innovative additions to their Chemask® line of temporary solder masks: Chemask® HT and Chemask® Aqua.
Chemask HT is a fast curing, peelable temporary spot mask formulated for long-term heat protection at elevated temperatures.
 
Manufacturers
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