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

High-Performance Ink-Jet Printed Graphene Resistors Formed With Environmentally-Friendly Surfactant-Free Inks For Extreme Thermal Environments

Jan 11, 2018 | Monica Michel, Chandan Biswas, Anupama B. Kaul

Ink-jet printing is poised to impact the manufacturing of devices that are particularly attractive for flexible electronics, as more suitable and printable fluids become available. The addition of surfacants in the preparation of the inks usually results in additional process steps, potentially increasing cost, as well as material waste, where the surfactants also often have a negative impact on specific properties of the printed features, such as comprising electrical conductivity of metallic structures. (...)

In this work, we have successfully formulated a suitable ink derived from a mixture of terpineolin cyclohexanone as a more environmentally friendly option for the exfoliation of bulk graphite, which we elaborate upon in more detail here....

Publisher: University of Texas

University of Texas

UTEP is a public institution that was founded in 1914 with total undergraduate enrollment of 20,521.

El Paso, Texas, USA

Research Institute / Laboratory / School

IPC-1782 Standard for Traceability Supporting Counterfeit Components

Jan 04, 2018 | Michael Ford

Traceability has grown from being a specialized need for certain safety critical segments of the industry, to now being a recognized value-add tool for the industry as a whole. The perception of traceability data collection however persists as being a burden that may provide value only when the most rare and disastrous of events take place. Disparate standards have evolved in the industry, mainly dictated by large OEM companies in the market create confusion, as a multitude of requirements and definitions proliferate.

The intent of the IPC-1782 project is to bring the whole principle and perception of traceability up to date. Traceability, as defined in this standard will represent the most effective quality tool available, becoming an intrinsic part of best practice operations, with the encouragement of automated data collection from existing manufacturing systems, integrating quality, reliability, predictive (routine, preventative, and corrective) maintenance, throughput, manufacturing, engineering and supply-chain data, reducing cost of ownership as well as ensuring timeliness and accuracy all the way from a finished product back through to the initial materials and granular attributes about the processes along the way. ...

Publisher: Mentor Graphics

Mentor Graphics

A leader in software solutions for electroncs design, Mentor Graphics is the only EDA company with a total end-to-end solution for design though manufacturing.

Wilsonville, Oregon, USA

Consultant / Service Provider

Top Reasons to Outsource IC Reworks on PCB

Dec 30, 2017 | Tuan Tran

Reworking printed circuit boards may require certain skills and tools to ensure quality results. When is it appropriate to outsource this work? ...

Publisher: Power Design Services

Power Design Services

Power Design Service's quick turn and hands-on customer service provides best-in-class printed circuit board, PCB, flex circuit and prototype design, fabrication, and assembly for your business.

San Jose, California, USA

Manufacturer

SMT Line or Manual PCB Assembly? When Hand Assembly Makes Sense

Dec 29, 2017 | Tuan Tran

Although PCB assembly is a highly automated process, there are times when manual PCB assembly makes sense for prototyping innovative tech products. ...

Publisher: Power Design Services

Power Design Services

Power Design Service's quick turn and hands-on customer service provides best-in-class printed circuit board, PCB, flex circuit and prototype design, fabrication, and assembly for your business.

San Jose, California, USA

Manufacturer

Article Design and Experiment of a Solder Paste Jetting System Driven by a Piezoelectric Stack

Dec 27, 2017 | Shoudong Gu, Xiaoyang Jiao, Jianfang Liu *, Zhigang Yang, Hai Jiang and Qingqing Lv

To compensate for the insufficiency and instability of solder paste dispensing and printing that are used in the SMT production process, a noncontact solder paste jetting system driven by a piezoelectric stack based on the principle of the nozzle-needle-system is introduced in this paper, in which a miniscule gap exists between the nozzle and needle during the jetting process....

Publisher: Jilin University

Jilin University

Founded in 1946, Jilin University It is a key comprehensive university under the direct jurisdiction of the Ministry of Education, and strongly supported by China’s "Project 211" and "Project 985".

Changchun, China

Research Institute / Laboratory / School

Printing and Curing of Conductive Ink Track on Curvature Substrate using Fluid Dispensing System and Oven

Dec 21, 2017 | Rd K . Khirotdin, Nurhafizzah Hassan, Hi H. Siang, Muhamad H. Zawahid

The present work concerns on the use of sensors to monitor the structural health of wind turbine . Conventionally the inspection was made using non-contact sensing during the turbine’s inoperable period hence loss occurred. A real -time monitoring system via embedded wireless sensor is preferred but the sensor could only be implanted using non-contact printing method due to most turbine blade s’ curved surface. Conductive ink associate d with non-contact printing method via fluid dispensing system are proposed since conductive inks are proven stretchable and fluid dispensing system enables printing on various substrates and works well with any materials......

Publisher: University of Tun Hussein Onn

University of Tun Hussein Onn

UTHM is a public university in Batu Pahat, Johor, Malaysia. It was formerly known as Institut Teknologi Tun Hussein Onn and Kolej Universiti Teknologi Tun Hussein Onn.

Johor, Malaysia

Research Institute / Laboratory / School

PCB Sourcing Using PCQR 2

Dec 13, 2017 | Al Block, Naji Norder, Chris Joran

In a global market, it is often difficult to determine the best PCB suppliers for your technology needs, while also a chieving the lowest costs for your products. Considering each PCB supplier has their own niche in t erms of equipment, process, and performance, uniform test data from the IPC -9151D Process Capability, Quality, and Relative Reliability (PCQR 2 ) Benchmark Test Standard can help find the right source for the board based on its specific technology requirements. By using a data-based approach to vendor selection, this can remove the subjective nature of sourcing, reduce the need for PCB process experts to map suppliers into technologies, and eliminate irrational sourcing decisions....

Publisher: National Instruments

National Instruments

Manufacturer of Computer-Based Measurement and Automation Tools

Austin, Texas, USA

Manufacturer

Cost effective solution in SMT production: AI and Big Data

Dec 12, 2017 | Alexei Shkolnik (Proventus Technologies)

In recent years, more and more companies with SMT production floor are trying to become more efficient and cut production costs. In most cases, the treatment was carried out problematic processes that visible and easy to find. Now these companies came to look problematic processes that are invisible and hard to find....

Publisher: Proventus Technologies

Proventus Technologies

Proventus has proven experience in creating software tools for the Electronic and Mechanic Manufacturing Industry in Israel and Canada.

Petah-Tikva, Israel

Consultant / Service Provider

Contamination Profile of Printed Circuit Board Assemblies in Relation to Soldering Types and Conformal Coating

Dec 11, 2017 | Hélène Conseil, Morten S. Jellesen, Rajan Ambat

Typical printed circuit board assemblies (PCBAs) processed by reflow, wave, or selective wave soldering were analysed for typical levels of process related residues, resulting from a specific or combination of soldering process. Typical solder flux residue distribution pattern, composition, and concentration are profiled and reported. Presence of localized flux residues were visualized using a commercial Residue RAT gel test and chemical structure was identified by FT-IR, while the concentration was measured using ion chromatography, and the electrical properties of the extracts were determined by measuring the leak current using a twin platinum electrode setup. Localized extraction of residue was carried out using a commercial C3 extraction system. Results clearly show that the amount and distribution of flux residues are a function of the soldering process, and the level can be reduced by an appropriate cleaning. Selective soldering process generates significantly higher levels of residues compared to the wave and reflow process. For conformal coated PCBAs, the contamination levels generated from the tested wave and selective soldering process are found to be enough to generate blisters under exposure to high humidity levels....

Publisher: Technical University of Denmark

Technical University of Denmark

The Technical University of Denmark has an overall mission of developing and creating value using the natural sciences and the technical sciences to benefit society.

Lyngby, Denmark

Research Institute / Laboratory / School

Utility of Dual Applicators for Non-Atomized Conformal Coating to Improve High-Volume Manufacturing Optimization

Dec 07, 2017 | Camille Sybert, Michael Szuch

Electronics manufacturers protect their circuit boards with conformal coatings. Conformal coatings serve as a barrier from environmental hazards and internal shorts, tin whiskers, and corrosion at the board level. Within conformal coatings different material chemistries specialize in shielding from an array of hazards and can be applied by multiple methods. The most common method is atomized spray which disperses the material into a fine mist. Alternatively, non-atomized coating controls the materials' dispense shape while maintaining the original liquid form. While some applications demand atomized spray and other scenarios overlap between atomized and non-atomized coating, this paper focuses on the circumstances where materials are ideally suited for non-atomized, selective coating....

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

Manufacturing Software

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