Electronics Manufacturing Technical Articles

Electronics Manufacturing Technical Articles

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

  • Reflow Ovens
  • Precision, fluid dispensing systems for low volume, high mix, R&D, and high volume 24x7 production

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1882 SMT / PCB Assembly Related Technical Articles

Cleaning No-Clean Fluxes Prior to Conformal Coating

Mar 09, 2020 | ACI Technologies, Inc.

A customer called the Helpline seeking advice for cleaning no-clean fluxes prior to applying a conformal coating. The customer's assemblies were manufactured with a no-clean rosin based solder paste (ROL0) and were cleaned with an isopropyl alcohol (IPA) wash. After cleaning, a white residue was sometimes found in areas with high paste concentrations and was interfering with the adhesion of the conformal coating (Figure 1). For conformal coatings to adhere properly, the printed circuit board (PCB) surface must be clean of fluxes and other residues. In addition, ionic contamination left by flux residues can lead to corrosion and dendrite growth, two common causes of electronic opens and shorts. Other residues can lead to unwanted impedance and physical interference with moving parts....

Publisher: ACI Technologies, Inc.

ACI Technologies, Inc.

ACI, an authorized IPC Training Center operating the National Electronics Manufacturing Center of Excellence providing analytical testing, manufacturing and repair services to the electronics industry.

Philadelphia, Pennsylvania, USA

Consultant / Service Provider, Standards Setting / Certification, Training Provider

Lubrication Grease Selection Guide

Mar 08, 2020 | Mike Sondalini

Lubrication Grease, use the right one for the job. Insight into lubrication classification. selection and application of greases. Compare the properties of greases and check those used in your equipment that are suited to the service....

Publisher: Business Industrial Network

Business Industrial Network

Offers training software, simulators, and videos. Also, on-site training qualifies for CEUs for maintenance, engineering, and management professionals.

Las Vegas, Nevada, USA

Consultant / Service Provider, Distributor, Media / Publisher / Online Resource, Research Institute / Laboratory / School, Training Provider

Maintenance Policies and Procedures

Mar 08, 2020 | Larry Bush

A sample for Larry Bush's Maintenance Policies and Procedures - 2nd Edition (A 415-page book in PDF format. Those who purchase also receive 150 support files in editable format to customize and use as samples and templates.)...

Publisher: Business Industrial Network

Business Industrial Network

Offers training software, simulators, and videos. Also, on-site training qualifies for CEUs for maintenance, engineering, and management professionals.

Las Vegas, Nevada, USA

Consultant / Service Provider, Distributor, Media / Publisher / Online Resource, Research Institute / Laboratory / School, Training Provider

IoT for Real-Time Measurement of High-Throughput Liquid Dispensing in Laboratory Environments

Mar 04, 2020 | Justin Shumate, Pierre Baillargeon, Timothy P. Spicer, and Louis Scampavia

Critical to maintaining quality control in high-throughput screening is the need for constant monitoring of liquid-dispensing fidelity. Traditional methods involve operator intervention with gravimetric analysis to monitor the gross accuracy of full plate dispenses, visual verification of contents, or dedicated weigh stations on screening platforms that introduce potential bottlenecks and increase the plate-processing cycle time.</p> <p>We present a unique solution using open-source hardware, software, and 3D printing to automate dispenser accuracy determination by providing real-time dispense weight measurements via a network-connected precision balance. This system uses an Arduino microcontroller to connect a precision balance to a local network. By integrating the precision balance as an Internet of Things (IoT) device, it gains the ability to provide real-time gravimetric summaries of dispensing, generate timely alerts when problems are detected, and capture historical dispensing data for future analysis. All collected data can then be accessed via a web interface for reviewing alerts and dispensing information in real time or remotely for timely intervention of dispense errors. The development of this system also leveraged 3D printing to rapidly prototype sensor brackets, mounting solutions, and component enclosures....

Publisher: SLAS Technology

SLAS Technology

SLAS Technology is a peer-reviewed scientific journal published by the Society for Laboratory Automation and Screening in partnership with SAGE Publications

Thousand Oaks, California, USA

Media / Publisher / Online Resource

Through-Hole Soldering Defects And The Solutions

Mar 01, 2020 | Will Bai, CTO in 1CLICK SMT

For though hole soldering, no matter it's wave soldering or selective soldering, the process is same formed by fluxing,preheating,soldering. How these 3 process will change the soldering result? When you face the soldering defects, what could be the reasons caused these and how to debug them? With below information you may get some hints....

Publisher: 1 CLICK SMT TECHNOLOGY CO., Limited

1 CLICK SMT TECHNOLOGY CO., Limited

Manufacturer of selective soldering machine, soldering robot, reflow oven, wave solder machine, pcb handling machine. Distributing for Turnkey line include SMT line, conformal coating lines, through hole line.

Dongguan City, China

Distributor, Manufacturer

Dispensing EMI Shielding Materials: An Alternative to Sputtering

Feb 26, 2020 | Garrett Wong, Jinu Choi

Shielding electronic systems against electromagnetic interference (EMI) has become a hot topic. Technological advancements toward 5G standards, wireless charging of mobile electronics, in-package antenna integration, and system-inpackage (SiP) adoption are driving the need to apply more effective EMI shielding and isolation to component packages and larger modules. For conformal shielding, EMI shielding materials for exterior package surfaces have mostly been applied with a physical vapor deposition (PVD) process of sputtering, leveraging front-end packaging technologies to back-end packaging applications. However, sputtering technology challenges in scalability and cost along with advancements in dispensable materials are driving considerations for alternative dispensing techniques for EMI shielding....

Publisher: ASYMTEK Products | Nordson Electronics Solutions

ASYMTEK Products | Nordson Electronics Solutions

A leader in automated fluid dispensing, jetting, and conformal coating. Products include stand-alone dispensing workstations and fully automated, in-line conveyorized systems with advanced process controls.

Carlsbad, California, USA

Manufacturer

Coat-and-Print Patterning of Silver Nanowires for Flexible and Transparent Electronics

Feb 19, 2020 | Weiwei Li, Azat Meredov, Atif Shamim

Silver nanowires (Ag NWs) possess excellent optoelectronic properties, which have led to many technology-focused applications of transparent and flexible electronics. Many of these applications require patterning of Ag NWs into desired shapes, for which mask-based and printing-based techniques have been developed and widely used. However, there are still several limitations associated to these techniques. These limitations, such as complicated patterning procedures, limited patterning area, and compromised optical transparency, hamper the efficient fabrication of high-performance Ag NW patterns. Here, we propose a coat-and-print approach for effectively patterning Ag NWs....

Publisher: Integrated Microwave Packaging Antennas and Circuits Technology (IMPACT) Lab

Integrated Microwave Packaging Antennas and Circuits Technology (IMPACT) Lab

IMPACT lab is focused on cutting-edge research in innovative antenna designs, RF circuits, and sensors.

Thuwal, Saudi Arabia

Research Institute / Laboratory / School

Selective protection for PCBs

Feb 18, 2020 | Scheugenpflug

Glob Top, Dam and Fill & Flit Chip Underfill To protect PCBs from damaging outside influences, they are coated with a thin layer of casting resin or protective finish during the conformal coating process. In addition to sealing the entire circuit board, it is possible to pot only sections or individual components on the substrate. Different methods ranging from "glob top" to "dam and fill" and "flip chip underfill" have been developed for this purpose....

Publisher: Scheugenpflug Inc.

Scheugenpflug Inc.

Producer of bonding, dispensing and potting solutions with outstanding expertise in automation. As part of the Atlas Copco Group, we have a worldwide sales & service network and access to the Group's extensive technology portfolio

Kennesaw, Georgia, USA

Manufacturer

Process Engineering - Why is preparation of adhesive bonding and potting materials necessary?

Feb 14, 2020 | Scheugenpflug

To meet the steady increase in technical requirements for electronic components, potting media properties must be extremely precise. Rheology, viscosity, filler content and curing behavior are only a few of the factors that play a role in their practical use. However, the growing complexity of materials often negatively impacts the ability to process or dispense them. In this case, material preparation and feeding systems specially designed for this purpose are required. These systems optimally prepare the material for the actual application and ensure homogeneous feeding to the dispensing system....

Publisher: Scheugenpflug Inc.

Scheugenpflug Inc.

Producer of bonding, dispensing and potting solutions with outstanding expertise in automation. As part of the Atlas Copco Group, we have a worldwide sales & service network and access to the Group's extensive technology portfolio

Kennesaw, Georgia, USA

Manufacturer

How to achieve optimum results in automated dispensing

Feb 13, 2020 | Scheugenpflug

Efficient bonding, sealing and potting has a major influence on the sustainable function and safety of electronic components. The key to success here lies in the comprehensive view and control of process engineering. Here it pays to seek collaboration with the systems and the material manufacturer during the very early stages of the project. This is because dispensing systems must be selected for compatibility with the workpiece and the adhesive, sealant or potting compound used. And there are also other factors that play an important role in designing the optimum dispensing system:...

Publisher: Scheugenpflug Inc.

Scheugenpflug Inc.

Producer of bonding, dispensing and potting solutions with outstanding expertise in automation. As part of the Atlas Copco Group, we have a worldwide sales & service network and access to the Group's extensive technology portfolio

Kennesaw, Georgia, USA

Manufacturer

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