Technical Library: circuits board (Page 14 of 31)

A HDMI Design Guide For Successful High-Speed PCB Design

Technical Library | 2009-03-25 17:14:11.0

This article presents design guidelines for helping users of HDMI mux-repeaters to maximize the device's full performance through careful printed circuit board (PCB) design. We'll explain important concepts of some main aspects of high-speed PCB design with recommendations. This discussion will cover layer stack, differential traces, controlled impedance transmission lines, discontinuities, routing guidelines, reference planes, vias and decoupling capacitors.

Texas Instruments

How to Profile a PCB

Technical Library | 2009-04-22 21:13:19.0

An optimal reflow profile is one of the most critical factors in achieving quality solder joints on a printed circuit board (PCB) assembly with surface mount components. A profile is a function of temperatures applied to the assembly over time. When graphed on a Cartesian plane, a curve is formed that represents the temperature at a specific point on the PCB, at any given time, throughout the reflow process.

DDM Novastar Inc

A Review of Models for Time-to-Failure Due to Metallic Migration Mechanisms

Technical Library | 2009-10-14 21:17:47.0

Electrochemical migration (ECM) is defined as the growth of conductive metal filaments across a printed circuit board (PCB) in the presence of an electrolytic solution and a DC voltage bias. ECM, also known as dendritic growth, is a critical issue in the electronics industry because the intermittent failure behavior of ECM is a likely root-cause of the high occurrence of field failures identified as no trouble found (NTF)/could not duplicate (CND)

DfR Solutions

An Effective Design of Experiment Strategy to Optimize SMT Processes

Technical Library | 2010-04-22 14:55:51.0

It is now widely accepted that using designed experiments is the most effective way to optimize surface mount technology (SMT) processes. This situation begs the question "what is an effective strategy in implementing this powerful tool?" This paper will present such a strategy that incorporates Taguchi's approach for screening, full factorial analysis for optimization and central composite design for precise modeling. We will present these techniques using MINITABTM Release 13 statistical software and printed circuit board industry applications.

Indium Corporation

How to Profile a PCB.

Technical Library | 2010-09-10 09:47:06.0

An optimal reflow profile is one of the most critical factors in achieving quality solder joints on a printed circuit board (PCB) assembly with surface mount components. A profile is a function of temperatures applied to the assembly over time. When graphed on a Cartesian plane, a curve is formed that represents the temperature at a specific point on the PCB, at any given time, throughout the reflow process.

Robert Bosch LLC Automotive Electronics Division

Determination of Copper Foil Surface Roughness from Micro-section Photographs

Technical Library | 2013-04-25 11:42:01.0

Specification and control of surface roughness of copper conductors within printed circuit boards (PCBs) are increasingly desirable in multi-GHz designs as a part of signal-integrity failure analysis on high-speed PCBs. The development of a quality-assurance method to verify the use of foils with specified roughness grade during the PCB manufacturing process is also important... First published in the 2012 IPC APEX EXPO technical conference proceedings.

Cisco Systems, Inc.

Choosing the Right Valve for a Selective Robotic Conformal Coating Application Process

Technical Library | 2013-10-13 10:29:59.0

When investigating the option of a selective conformal coating process it is crucial to consider the right robotic system and valve combination for the material and circuit board that you wish to coat. To fail to do this can lead to difficult process problems in the production line. This article reviews the various valves available and how they can be used with the typical conformal coating materials in the market and highlights some of the key considerations.

SCH Technologies

High Performance Multilayer PCBs Design and Manufacturability

Technical Library | 2013-10-31 17:36:41.0

Multilayer printed circuit boards (PCBs) that utilize high performance materials are inherently far more challenging for a fabricator to build, due to significant material property differences over standard epoxy glass FR4. These unique material characteristics often require higher processing temperatures, special surface treatments (to aid in hole and surface plating), they possess different expansion properties, making layer-to-layer registration more difficult to control, and require many other unique considerations.

Spectrum Integrity, Inc.

Stencil Design Guidelines for Electronics Assembly Technologies.

Technical Library | 2014-03-13 15:25:01.0

A student competition paper at Budapest University of Technology And Economics, Department of Electronics Technology gives background, covers stencil design and discusses stencils intended for pin in paste application. The stencil applied for depositing the solder paste is a thin, 75–200 µm thick metal foil, on which apertures are formed according to the solder pads on the printed circuit board. Stencil printing provides a fast, mass solder paste deposition process; relatively expensive, appropriate and recommended for mass production.

Budapest University of Technology and Economics

Enhancing Mechanical Shock Performance Using Edgebond Technology

Technical Library | 2014-06-26 16:43:12.0

Edgebond adhesives have been widely used by the industry for improving the shock performance of area array packages. Most of the studies focus on the impact of material properties, such as coefficient of thermal expansion (CTE) and glass transition temperature (Tg), on reliability at room temperature. However, the operating temperature of a component on the printed circuit board bonded with edgebond adhesive can be close to or exceed Tg of the adhesive, where the material properties may be very different than at room temperature.

Cisco Systems, Inc.


circuits board searches for Companies, Equipment, Machines, Suppliers & Information

Baja Bid Auction JUL 9-10, 2024

Training online, at your facility, or at one of our worldwide training centers"
2024 Eptac IPC Certification Training Schedule

Software for SMT placement & AOI - Free Download.
IPC Training & Certification - Blackfox

High Precision Fluid Dispensers
Electronic Solutions R3

500+ original new CF081CR CN081CR FEEDER in stock