Electronics Manufacturing Technical Articles

Electronics Manufacturing Technical Articles

Papers and articles related to SMT, PCB & EMS industry.

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1882 SMT / PCB Assembly Related Technical Articles

Fracture Toughness Analysis of Epoxy-Recycled Rubber-Based Composite Reinforced with Graphene Nanoplatelets for Structural Applications in Automotive and Aeronautics

Feb 25, 2021 | Alaeddin Burak Irez, Emin Bayraktar and Ibrahim Miskioglu

This study proposes a new design of lightweight and cost-ecient composite materials for the aeronautic industry utilizing recycled fresh scrap rubber, epoxy resin, and graphene nanoplatelets (GnPs). After manufacturing the composites, their bending strength and fracture characteristics were investigated by three-point bending (3PB) tests. Halpin–Tsai homogenization adapted to composites containing GnPs was used to estimate the moduli of the composites, and satisfactory agreement with the 3PB test results was observed....

Publisher: Université Paris-Saclay

Université Paris-Saclay

LMT-Cachan, founded in 1975, is a joint research unit common to ENS Paris-Saclay and the National Centre for Scientific Research (CNRS, INSIS-Institute for Engineering and Systems Sciences).

91190 Gif-sur-Yvette, France

Research Institute / Laboratory / School

Humitector™ Type 2 Non-Reversible Humidity Indicator Cards from Clariant help assure the integrity of moisture-sensitive surface-mount devices

Feb 20, 2021 | Clariant

Customers must be able to rely on accurate humidity indication as an assurance of SMD quality and fitness for processing and use. Without it, they might accept SMDs from suppliers that have already been irreparably damaged by moisture during storage or transit. Or, they might approve for processing SMDs that have been improperly or insufficiently heat-dried. Beyond the processing questions, there are financial questions: Where did the dry pack problems originate and who--supplier, customer, shipper--is financially responsible for the damaged SMDs? In response, Clariant, the originator of the color change humidity indicator card, and a member of the JEDEC's Subcommittee 14.1, "Reliability and Test Methods for Packaged Devices," created a new "non-reversible" halogen and cobalt dichloride free humidity indicator card. This HIC combines two reversible indicators (5% and 10%) with a new non-reversible (60% RH) indicator spot. (Figure 1) The 5% and 10% reversible spots work the way similar indicators do: they change color from blue (dry), to lavender, to pink (wet) to indicate humidity exposure at the indicated levels. If humidity levels drop, they will gradually revert back to blue....

Publisher: Clariant Cargo & Device Protection

Clariant Cargo & Device Protection

Clariant Cargo & Device Protection offers a complete portfolio of desiccants and humidity indicator cards for use in dry packing.

Belen, New Mexico, USA

Manufacturer, Other

Electrochemical Sensors For Nitrogen Species: A Review

Feb 17, 2021 | Heejeong Ryua, Dorian Thompson, Yuankai Huang, BaikunLi, Yu Leia

This review provides an overview of electrochemical sensors for nitrogen species, especially, ammonium, nitrate, and nitrite. Due to the extensive anthropogenic activities, the concentration of nitrogen species has been dramatically increased in the environment. In particular, fertilizers containing ammonium and nitrate have been extensively used in agriculture where as nitrite-included additives or preservatives have been used in food industry. Since excessive nitrogen species have an adverse effect to environment and human health such as eutrophication and methemoglobinemia (blue baby syndrome), efforts have been made to develop efficient monitoring methods. On that account, the U.S Environmental Protection Agency (EPA) established the maximum contaminant level (MCL) for nitrate and nitrite to be 10mg/L nitrate-N and 1mg/L nitrite-N in drinking water, respectively. Typical analytical methods for nitrogen species are chromatography or spectrometry. However, these methods require expensive instrumentations, skilled operator, and considerable sample pretreatment and analysis time. As an alternative approach, electrochemical sensors have been explored to monitor nitrogen species owing to its simplicity, superior sensitivity, versatility, rapidity, field applicability, and selectivity. In this review, electrochemical based detection methods for nitrogen species especially ammonium, nitrate and nitrite are systematically discussed, including the fundamentals of electrochemical techniques, sensing mechanisms, and the performance of each sensor. doi.org/10.1016/j.snr.2020.100022...

Publisher: University of Connecticut

University of Connecticut

The University of Connecticut is a public land-grant research university in Storrs, Connecticut. It was founded in 1881. The primary 4,400-acre campus is in Storrs, Connecticut, approximately a half hour's drive from Hartford and

Storrs, Connecticut, USA

Research Institute / Laboratory / School

Printed Circuit Board (PCB) Technology for Electrochemical Sensors and Sensing Platforms

Feb 17, 2021 | Hamed Shamkhalichenar, Collin J. Bueche and Jin-Woo Choi

The development of various biosensors has revolutionized the healthcare industry by providing rapid and reliable detection capability. Printed circuit board (PCB) technology has a well-established industry widely available around the world. In addition to electronics, this technology has been utilized to fabricate electrical parts, including electrodes for different biological and chemical sensors. High reproducibility achieved through long-lasting standard processes and low-cost resulting from an abundance of competitive manufacturing services makes this fabrication method a prime candidate for patterning electrodes and electrical parts of biosensors. The adoption of this approach in the fabrication of sensing platforms facilitates the integration of electronics and microfluidics with biosensors. In this review paper, the underlying principles and advances of printed board circuit technology are discussed. In addition, an overview of recent advancements in the development of PCB-based biosensors is provided. Finally, the challenges and outlook of PCB-based sensors are elaborated. doi:10.3390/bios10110159...

Publisher: Louisiana State University

Louisiana State University

LSU is the flagship university for Louisiana, supporting land, sea and space grant research.

Baton Rouge, Louisiana, USA

Research Institute / Laboratory / School

Autonomous Vehicle Implementation Predictions - Implications for Transport Planning

Feb 11, 2021 | Todd Litman

This report explores the impacts of autonomous (also called self-driving, driverless or robotic) vehicles, and their implications for transportation planning. It investigates how quickly such vehicles are likely to develop and be deployed based on experience with previous vehicle technologies; their likely benefits and ......

Publisher: Victoria Transport Policy Institute

Victoria Transport Policy Institute

The Victoria Transport Policy Institute is an independent research organization dedicated to developing innovative and practical solutions to transportation problems. We provide a variety of resources available free at this ...

Victoria, British Columbia, Canada

Research Institute / Laboratory / School

2020 AUTONOMOUS VEHICLE TECHNOLOGY REPORT

Feb 11, 2021 | How this report came to be: a collaborative effort - Bram Geenen Editor-In-Chief

Motorized transportation has changed the way we live. Autonomous vehicles are about to do so once more. This evolution of our transport - from horses and carriages, to cars, to driverless vehicles, - has been driven by both technical innovation and socioeconomic factors. In this report we focus on the technological aspect....

Publisher: Wevolver

Wevolver

At Wevolver we want to empower people to create and innovate by providing access to engineering knowledge. Humans need innovation to survive and thrive. Developing relevant technologies and creating the best possible solutions ...

Chorley, United Kingdom

Research Institute / Laboratory / School

2020 AUTONOMOUS VEHICLE TECHNOLOGY REPORT

Feb 11, 2021 | How this report came to be: a collaborative effort - Bram Geenen Editor-In-Chief

Motorized transportation has changed the way we live. Autonomous vehicles are about to do so once more. This evolution of our transport - from horses and carriages, to cars, to driverless vehicles, - has been driven by both technical innovation and socioeconomic factors. In this report we focus on the technological aspect....

Publisher: Wevolver

Wevolver

At Wevolver we want to empower people to create and innovate by providing access to engineering knowledge. Humans need innovation to survive and thrive. Developing relevant technologies and creating the best possible solutions ...

Chorley, United Kingdom

Research Institute / Laboratory / School

Recycling Waste Circuit Board Efficiently and Environmentally Friendly through Small-Molecule Assisted Dissolution

Feb 04, 2021 | Zhiqiang Chen, Meng Yang, Qian Shi, Xiao Kuang, H. Jerry Qi & Tiejun Wang

With the increasing amount of electronic waste (e-waste) generated globally, it is an enormous challenge to recycle printed circuit boards (PCBs) efficiently and environmentally friendly. However, conventional recycling technologies have low efficiency and require tough treatment such as high temperature (>200 °C) and high pressure. ... doi.org/10.1038/s41598-019-54045-w....

Publisher: National Natural Science Foundation of China

National Natural Science Foundation of China

The National Natural Science Foundation of China (NSFC) was established on February 14, 1986. Upon its establishment, NSFC was an institution directly under the jurisdiction of the State Council, tasked with the administration ...

Beijing, China

Research Institute / Laboratory / School

Closed‑Loop Recycling of Copper from Waste Printed Circuit Boards Using Bioleaching and Electrowinning Processes

Feb 04, 2021 | Mahsa Baniasadi· John E. Graves · Daniel A. Ray5 · Angélique Lindamulage De Silva · Derek Renshaw · Sebastien Farnaud

In the present study, a model of closed-loop recycling of copper from PCBs is demonstrated, which involves the sequential application of bioleaching and electrowinning to selectively extract copper. This approach is proposed as part of the solution to resolve the challenging ... doi.org/10.1007/s12649-020-01128-9...

Publisher: Waste and Biomass Valorization

Waste and Biomass Valorization

Springer Publishing is an award-winning publisher of healthcare and behavioral sciences content, featuring books, apps, journals, and digital products. With an acute understanding of how educators teach, how practitioners work ...

6330 Cham, Switzerland

Media / Publisher / Online Resource

Extreme Long Term Printed Circuit Board Surface Finish Solderability Assessment

Jan 28, 2021 | Gerard O'Brien, Solderability Testing and Solutions Inc., Richmond, KY Dave Hillman, Rockwell Collins, Cedar Rapids, IA

Printed circuit board surface finishes are a topic of constant discussion as environmental influences, such as the Restriction of Hazardous Substances (RoHS) Directive or technology challenges, such as flip chip and 01005 passive components, initiate technology changes. These factors drive the need for greater control of processing characteristics like coplanarity and solderability, which influence the selection of surface finishes and impact costs as well as process robustness and integrity. The ideal printed circuit board finish would have good solderability, long shelf life, ease of fabrication/processing, robust environmental performance and provide dual soldering/wirebonding capabilities; unfortunately no single industry surface finish possesses all of these traits. The selection of a printed circuit board surface finish is ultimately a series of compromises for a given application....

Publisher: Solderability Testing and Solutions Inc

Solderability Testing and Solutions Inc

Solderability Testing and Solutions Inc is located in Richmond, KY, United States and is part of the Consumer Services Industry. Solderability Testing and Solutions Inc has 2 total employees across all of its locations ...

Richmond, Kentucky, USA

Research Institute / Laboratory / School

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