... modules including six power LEDs are designed. In the layout of these modules, different areas of a thermal pad of each LED are used. These modules are made using the classical FR-4 base and metal core printed circuit board (MCPCB). Thermal and optical parameters of all the tested modules are measured...

... the possibility of simulating the effects of humidity and contamination on printed circuit board components and sensitive parts if typical SIR data connected to a particular climatic condition are available. This is shown on representative components and typical circuits. Design/methodology/approach A range...

...Boleslav Psota; Alexandr Otáhal; Ivan Szendiuch Purpose – The main aim of this paper is to investigate the influence of the cavity coverage on the printed circuit boards (PCB) to the resonant frequency, acceleration and displacement. Design/methodology/approach – Tests were realized on four...

...Linxian Ji; Chong Wang; Shouxu Wang; Wei He; Dingjun Xiao; Ze Tan Purpose – The purpose of this paper is to optimize experimental parameters and gain further insights into the plating process in the fabrication of high-density interconnections of printed circuit boards (PCBs) by the rotating disc...

...William Burr; Nick Pearne Purpose – The purpose of this paper is to look at innovation and the tension which arises between proprietorship and standardization. Design/methodology/approach – The paper presents an analysis of the learning curve theory in relation to the printed circuit board...

... an overall understanding of the challenges and solutions during ultra‐small micro drill bit design. Additionally, this paper presents a solution for packaging substrate ultra‐small hole processing by mechanical drilling. © Emerald Group Publishing Limited 2010 Printed circuit boards Packaging...

... complex. Organometallic compounds Nanotechnology Printed circuit boards Soldering polymers Surface treatment The so‐called “organic metal” (OM) is an advanced form of conductive polymer which has metallic properties, even though it is characterized as an organic compound. The material...

... circuit layer is functionally similar to the front circuit layer, but has an additional annular ring layer to connect with the other metal layers. © Emerald Group Publishing Limited 2009 Printed circuit boards Sensors Biotechnology In recent years, integrated bio‐chip...

... Printed circuit boards Physical property measurement The wear condition of a micro drill bit is an important index to reflect the performance of micro drill bit. Micro drill bit wear is directly related with the level of cutting force and an excessively worn drill can lead to drill breakage due...

...Mircea Ancău Purpose The purpose of this paper is to demonstrate the optimization of printed circuit board (PCB) manufacturing by improving drilling process productivity. Design/methodology/approach Two different ways are explored to increase the productivity of the PCB drilling operation...

...Sudipta Roy Purpose The purpose of the paper is to present an update and the latest results from work on a project which could be useful for maskless printed circuit board (PCB) manufacturing. Design/methodology/approach Copper is plated and etched using a novel electrochemical technique...

... © Emerald Group Publishing Limited 2004 --> Printed circuit boards HMS-HDF-Tsunami-technology obtains yield-rate of over 99 per cent Keywords: Printed circuit boards HMS-Höllmüller has set higher international standards several years back with the development...

...Michael Weinhold; Raymund Kwok © Emerald Group Publishing Limited 2004 --> Conference Printed circuit boards Electronics industry The TPCA Show, 29 October-1 November 2003 Keywords: Conference, Printed circuit boards, Electronics industry A week before...

... Environmental management systems – outline of the process and benefits to business Keywords: Environmental management, Legislation, Printed circuit boards © Emerald Group Publishing Limited 2004 --> Environmental management Legislation Printed circuit boards...

... Applied Laser Technologies at www.altinc.com for more details. © Emerald Group Publishing Limited 2004 Resistors Printed circuit boards “Embedded passives” (EPs) are emerging as an exciting technology for the printed circuit board (PCB) industry, with great promise for reductions...

... Limited 2004 Printed circuit boards Electrical components The high volume sector of the printed wiring board (PWB) industry has never been under such intense cost pressure as it is now – a time when complete factories are being closed all around the world. A key to success in these hard...

... Keyword: Printed circuit boards Simm Tech Co. Ltd said it has signed a long-term contract with the UK's Graphic PLC to supply printed circuit boards (PCBs) used in networks, with the initial order amounting to 3mln USD. The company expects further orders from Graphic in the near...

... Publishing Limited 2004 Capacitors Assembly Printed circuit boards Commercially available photodefinable epoxy systems such as Probimer 4959 epoxy and LMB 7081 were supplied by Ciba‐Geigy Corporation and XP9500CC, an epoxy‐based photoimageable dielectric, was supplied by the Shipley...

...Percy Chinoy; Marc Langlois Printed circuit board designers face formidable challenges of increased functionality in smaller size boards, and reduced EMI in high‐speed circuits. Embedded passives technology can open up valuable space on the board surface while also improving the electrical...

... contamination, moisture absorption and polymer structure seem to be the main factors influencing the electro‐migration endurance period. Printed circuit boards Capacitors Assembly The development of embedded capacitor technology has been driven by the needs to save board size, increase...