QFN Thermal Pad Design for Void Minimization
Different types of components with soldered bottom terminations are increasingly used in the electronics industry with the principal objective to improve heat dissipation.
The larg
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Event
IPC APEX EXPO 2023
A Novel Copper Via Filling Electrolyte for Plating on IC Substrates
The Semi-Additive Process (SAP) is a standard process to enable very fine lines and spaces to produce highly sophisticated Integrated Circuit Substrates (ICS). When operating with lines and
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Event
IPC APEX EXPO 2023
Novel Surface Finish for 5G-mmWave frequency PCB Technologies- How to Achieve Optimum Signal Integrity
The next generation devices using high frequency of 5G to mmWave and greater has called for innovation in materials used in electronics manufacturing to realize the optimum signal integrity
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Event
IPC APEX EXPO 2023
Reassessing Surface Finish Performance for Next Generation Technology
PCB Fabricators have long since abandoned Hot-Air Levelling, with several alternative final finishes (ImAg, ImSn, OSP, ENIG and ENEPIG) now well established as having a track record of meeti
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Event
IPC APEX EXPO 2023
A High Thermal Performance Die Attaching Paste based on Hybrid Pressure-less Silver Sintering Technology for Aerospace Application
Aerospace and defense applications present unique challenges for material suppliers. As increasingly adoption of wide bandgap semiconductor materials and advanced diverse accessible heteroge
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Event
IPC APEX EXPO 2023
Failure Characteristics of PCBs in Automotive EV Powertrain Applications and Solution Proposals to Improve Reliability and Robustness
The rapid change to and steep rise of electric vehicles (EV) results in many challenges for the design, manufacturing, testing, and the understanding of reliability and robustness for printe
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Event
IPC APEX EXPO 2023
Expandable Bio-based Polymers: A Lightweight Future for Electronics Ruggedization – Immersion Study
“Light weighting” has become an important trend in numerous manufacturing divisions. Lightweight materials are particularly valuable in any portable device including mass transit systems, au
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Event
IPC APEX EXPO 2023
Selective Solder Nozzles: Insight Into Wear Mechanisms and Future Developments
Selective soldering utilizes wettable metal nozzles for controlled application of solder to components. The wetting of solder to the nozzles is part of a complex mechanism that causes wear o
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Event
IPC APEX EXPO 2023
New Soldering Technology for High and Mixed-Volume Through-Hole Pin Devices
Surface mount technology was developed in the 1960s and implemented on printed circuit boards in the 1980s. High-density electronic assemblies are dominated nowadays by surface mount devices
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Event
IPC APEX EXPO 2023
Photonic Soldering of Wafer-level Chip-scale Packaged Components on Polyethylene Terephthalate Flex Board
Advanced implementation of wearables and IOT applications require attachment of components on lightweight, mechanically flexible, and low-cost substrates. Candidate materials that meet these
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Event
IPC APEX EXPO 2023
Gold Brush Plating Rework of Power Logic Circuit Card Assembly in an Aerospace Electronic Application
Selective electrodeposition (brush plating) was successfully used to rework a solder-contaminated, hard gold-plated copper flag connector for a circuit card assembly (CCA). The localized rep
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Event
IPC APEX EXPO 2019
iNEMI General Purpose Flowers of Sulfur Corrosion Chamber
The iNEMI flowers of sulfur (FoS) corrosion chamber was developed to study creep corrosion on printed circuit board assemblies(PCBAs). The chamber, typically run at 50 or 60oC, has corrosive
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Event
IPC APEX EXPO 2019
Reducing Dust Deposition on Electronic Equipment by Optimizing Cooling Air Flow Patterns
Environmental dust accumulation on electronic equipment can impact the performance and reliability of the equipment in various ways. This includes mechanical effects (such as obstructions of
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Event
IPC APEX EXPO 2019
Electronic Board Defect Classification and Detection with Deep Learning
Inspection means have increasingly been incorporated into typical manufacturing of boards, substrates and/or systems. A significant number of automatic inspections rely on the analysis of im
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Event
IPC APEX EXPO 2019
Beyond The Hype -The Digital Twin Demystified
Digitalization changes everything, everywhere. It is inevitable, new business drivers are forcing the Electronics industry to rethink every element of their business. Virtually every company
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Event
IPC APEX EXPO 2019
Energy Efficient Reflow Soldering Process Using Embedded Carbon Layers
As the reflow soldering process is the main energy consumer in a SMT assembly line, there is a high potential for cost reduction by significantly reducing the amount of energy needed. Meltin
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Event
IPC APEX EXPO 2019
Can 150μm Pitch Flip Chip be Done on Standard SMT Lines?
As miniaturization trends continue in the electronics industry, System in Package (SiP) technology is gaining more and more traction. In many ways, some SiP modules are just surface mount te
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Event
IPC APEX EXPO 2019
Investigating the Metric 0201 Assembly Process
The advance in technology and its relentless develop mentis delivering yet another surface mount assembly challenge. To meet the market demand for products with higher functionality whilst r
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Event
IPC APEX EXPO 2019
Balancing Air Assisted Atomization for Improved Conformal Coating Quality
Polymer coating materials protect electronics from harsh environments, assuring safe and reliable performance. To reach the highest level of reliability, coatings must be selectively applied
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Event
IPC APEX EXPO 2019
Automated Conformal Coating of Circuit Card Assemblies Using Polyurethane Material
The development of an automated circuit card assembly(CCA)conformal coating process using a low outgassing polyurethane material was essential for meeting the increase in customer demand fro
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Event
IPC APEX EXPO 2019
High Performance Light and Moisture Dual Curable Automotive Conformal Coating
Light-curable materials can provide significant benefits over conventional technologies, including lower operating costs driven by lower labor needs, space savings, lower energy demand, and
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Event
IPC APEX EXPO 2019
Future of “Substances and Materials in Products ”Data Exchange Formats as Standards
To support regulations on hazardous substances in materials and in products like the automotive EU End of Life Vehicle (ELV) directive, the Electronics and Electrical Equipment Restriction o
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Event
IPC APEX EXPO 2019
Endocrine Disrupting Chemicals and Bioaccumulative Substances –The Next Wave of Regulated Substances in Electronics
Until recently, virtually all restricted materials in electronics were classified as either carcinogens (e.g. Pb) or reproductive toxins (e.g. phthalates). Two new categories of restricted m
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Event
IPC APEX EXPO 2019
High Frequency Due to Copper Topology Phase 2 Project –Final Report High Density Packaging User Group (HDP)
The High Density Packaging (HDP) User Group has completed a project based upon an earlier project evaluating the different types of high frequency test methods used in the industry for measu
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Event
IPC APEX EXPO 2019
Moisture Effects on the High Frequency Testing of Laminates
Earlier HDP User Group project work that has been completed and published compared the different types of high frequency test methods used in the industry for measuring Dk and Df at high fre
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Event
IPC APEX EXPO 2019
Tolerance Mistaken: Impacts of not properly addressing material, industry standards and assembly process limitations
As electronic assembly designs have increased in density and component packaging size and lead pitch have decreased in size, this has placed tighter requirements on manufacturing processes.
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Event
IPC APEX EXPO 2019
Electrical and Thermo-Mechanical Design Constraints Affecting System and Component Performance
This slide show presents solutions to the relevant Power Module question: "What has to be considered within a PCB, if currents with about 50 A and voltages above 500 V should be designed?"&n
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Event
IPC APEX EXPO 2019
The Importance of Non-Destructive Bare Board Inspection –Preventing Failure Before You Start Work
The operation and reliability of any electronic assembly is very dependent on the performance, quality and consistency of the bare printed circuit board (PCB). Without good quality bare boar
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Event
IPC APEX EXPO 2019
Analyzing a Printed Circuit Board with Oxide Residue
A number of similar Printed Wiring Assemblies (PWAs) had been subjected to final electrical tests on automated test equipment when a common test failure was recognized. All PWAs were failing
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Event
IPC APEX EXPO 2019
Outgassing Behaviour of SMT Flux Residue During Reflow Soldering
SMT-flux residues are feared to be a potential risk factor for quality issues in electronic assembly and interconnect technology. This work shows how the amount of no clean flux residues can
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Event
IPC APEX EXPO 2019
How to Manage Material Outgassing in Reflow Oven
In a lead-free reflow process, temperatures are higher, and materials use outgasses more than in a leaded reflow process. The trends toward higher density populated boards and more pin-in-pa
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Event
IPC APEX EXPO 2019
Comparing Soldering Results of ENIG and EPIG Post Steam Exposure
ENIG, electroless nickel immersion gold is now a well-regarded finish used to enhance and preserve the solder-ability of copper circuits. EPIG, electroless palladium immersion gold, is a new
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Event
IPC APEX EXPO 2019
Designing a High Performance Electroless Nickel and Immersion Gold to Maximize Highest Reliability
The latest highest reliability requirements demand a high performance electroless nickel and immersion gold (HP ENIG). The new IPC specification 4552A has refocused the industry with referen
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Event
IPC APEX EXPO 2019
Multilayered Flexible Hybrid Screen Printed Circuits on Disposable Medical Grade Substrates
This paper details the realization of a multi-layered, printed, conformable hybrid circuit. The circuit was created using silver(Ag) flake ink as a conductive layer and UV acrylic-based ink
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Event
IPC APEX EXPO 2019
Printed Electronics for Medical Devices
As is the case with many other markets where faster, highly capable technologies have resulted in more intelligent processes and products, the medical device sector is also undergoing a “sma
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Event
IPC APEX EXPO 2019
Development for Next Generation Halogen Free Ultra Low Loss Material
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Event
IPC APEX EXPO 2019
Fabric Weaving and Circuit Orientations Impact for Skew / Signal Integrity
This Presentation discusses Improvements for signal integrity. Signal integrity is based on the copper surface roughness, the oxides on the copper, and the Dielectric constant of the D
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Event
IPC APEX EXPO 2019
Innovations for future RF designs
This Slide show presents RF Cap Layers to normal FR4 Dielectric materials. This material can be used in multiple configurations including Single sided, Double sided, and Hybrid.&n
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Event
IPC APEX EXPO 2019
Higher Defluxing Temperature and Low Standoff Component Cleaning-A Connection?
OEMs and CMs designing and building electronic assemblies for high reliability applications are typically faced with a decision to clean or not to clean the assembly. If ionic residues remai
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Event
IPC APEX EXPO 2019
Methodology for Developing Cleaning Process Parameters
Electronic assembly processes range from simple to complex and involve a wide range of materials to produce. Each step in the process and each assembly material used will have some impact on
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Event
IPC APEX EXPO 2019
IPC-J-STD-001 Rev G, Amendment 1, Section 8 Cleanliness SectionSIR Test Method for Developing Objective Evidence for the Production Assembly
Since the 1970s, ROSE testing was used to determine “clean enough.” In 2015, the J-STD-001 committee assigned a team to develop the next generation of “cleanliness” requirements. Section 8 d
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Event
IPC APEX EXPO 2019
Oxidation Resistant Nano-Cu Sintering Paste for Die Attach Applications
A nano-Cu pressureless sinterable paste was developed for joint formation applications. The material was further engineered in both chemistry and process for enhanced oxidation resistance. T
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Event
IPC APEX EXPO 2019
Fluxes Suppressing Non-Wet-Open at BGA Assembly
With the advancement in miniaturization, the die is getting thinner and the solder balls are getting smaller for BGAs. Consequently, the thermal warpage is getting more severe due to the mis
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Event
IPC APEX EXPO 2019
Size Matters - The Effects of Solder Powder Size on Solder Paste Performance
Solder powder size is a popular topic in the electronics industry due to the continuing trend of miniaturization of electronics. The question commonly asked is “when we should switch from Ty
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Event
IPC APEX EXPO 2014
Interconnect Reliability Correlation with System Design and Transportation Stress
Interconnect reliability especially in BGA solder joints and compliant pins are subjected to design parameters which are very critical to ensure product performance at pre-defined shipping c
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Event
IPC APEX EXPO 2019
Multiphysics Design for Thermal Management to Increase Radar Capabilities
Increased demand for radar capabilities has required increasingly more efficient thermal management techniques. Simple cold plates using tubes or channels are frequently used to cool high po
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Event
IPC APEX EXPO 2019
Realization of a New Concept for Power Chip Embedding
Embedded components technology has launched its implementation in volume products demanding high levels of miniaturization. Small modules with embedded dies and passive components on the top
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Event
IPC APEX EXPO 2019
Stretchable Hybrid Electronics (S.H.E.) Constructions Based on a Novel Thermosetting Polymer System
This presentation covers Stretchable hybrid electronics. Stretchable electronics have the most industry uses in wearable technology and for mobile sensing and response devices. T
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Event
IPC APEX EXPO 2019
Next-Generation Additive Electronics -Precise Multi-Material Deposition for Circuits, Electro-Mechanical Parts and Antennas
This presentation covers additive manufacturing and the direct deposit of multiple metals. This additive capability is best utilized for the production of complicated circuits such as
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Event
IPC APEX EXPO 2019
Additive Manufacturing of a Heat Exchanger for a Radar System
The defense industry has realized the importance of Additive Manufacturing (AM) and how this technology can be utilized where parts can be fabricated inexpensively with reduction in lead tim
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Event
IPC APEX EXPO 2019