Each electronic circuit on the printed circuit board (PCB) is designed to operate over a limited range of DC voltage, outside of which circuit operation or performance is not guaranteed. A generalized view of the static voltage and associated tolerance is shown in Figure 1. In order to achieve high speed and low power dissipation, recent microprocessor , DSP and FPGA chips require voltage level...

This paper discusses an industrial case study in which data mining has been applied to solve a quality engineering problem in electronics assembly. During the assembly process, solder balls occur underneath some components of printed circuit boards. The goal is to identify the cause of solder defects in a circuit board using a data mining approach. Statistical process control and design of expe...

An automated visual printed circuit board (PCB) inspection system proposed in this paper is designed specifically to detect various types of defects occurred during circuit printing process in manufactory. Two-dimensional HAAR wavelet transform is incorporated in the PCB inspection algorithm of the inspection system. During the inspection, two type of images are required; reference and tested P...

This paper an presents analysis of metals in waste of printed circuit boards (PCB) covering types of PCB, segregated from PC computers, mobile phones, and mixed. The presented data identifies metals and other substances found in PCB waste based on elemental and technical analysis of PCBs. PCB categorization based on gold concentration is presented, resulting in two groups: electric and electron...

One of the backbones in electronic manufacturing industry is the printed circuit board (PCB) manufacturing. Due to the human limited resources and speed requirements, manual inspection is ineffective to inspect every printed circuit board. Hence, this paper presents an efficient algorithm for an automated visual PCB inspection system that detects and locates any defect found on PCBs. The detect...

VOLUME 37 • MARCH 2012 • www.mrs.org/bulletin © 2012 Materials Research Society Introduction The fi rst developments on stretchable circuits were reported in the early 2000s in a number of U.S.-based research institutes, including Lawrence Livermore National Laboratory, 1 Princeton University, 2 and Johns Hopkins University. 3 All of these technologies used thin-fi lm metallization (evaporation...

From the CAD system we get the schematic, assembly drawings and other documentation, data for photoor laser plotter to manufacture photographic films for the PWB production, data for the printing mask for solder resist and solder paste printing, data for numeric drilling and milling machines, placement information for pick and place machines, data for test fixtures and the testing machine, etc....

© 2000 IEEE. Information contained in this newsletter may be copied without permission provided that the copies are not made or distributed for direct commercial advantage, and the title of the publication and its date appear. A bstract – In this article, the fundamental concept, characteristics and application potentials of coreless printed-circuit-board (PCB) transformers are described. Corel...