datasheets.com EBN.com EDN.com EETimes.com Embedded.com PlanetAnalog.com TechOnline.com   UBM Tech
UBM Tech

PCB

Janine Love
Senior Editor
In-depth technical design information, product advancements, and technology and tool updates for engineers, engineering managers and system architects responsible for designing, specifying, selecting or connecting printed circuit boards (PCBs) for electronics applications. Topics include layout tools, IC and board connectivity, connectors, board to board connectivity, signal integrity, power, signal and ground routing, conformal coatings, passive device integration, 3D modeling, and board and system concurrent design.

Gaps in return planes - yes or no?

As a participant during the panel discussion on EMC versus SI at the recent DesignCon 2014, I sensed (along with some in the audience) that there was disagreement as to whether it was OK to cross a gap in the return plane with a high speed, fast-edged, signal. Unfortunately, there was too little time in which to come to an agreement or to illustrate the conditions in which it was OK, or not OK. Read More...

See the crosstalk in 100GbE

Thrill to a real-time view of time-varying 25Gb/s crosstalk. Read More...

How much attenuation is too much?: Rule of Thumb #10

This rule of thumb enables us to estimate how much attenuation is in the loss budget of a serial channel. Read More...

Getting EMC design right – First time, Part 1

We start this extensive book serialization by looking at grounding and planes. Read More...

The case for rigid-flex PCB technology

Once reserved for specialized and higher-end applications, mixed rigid-flex PCBs are trickling down into the mainstream. Read More...

Coming soon to a PCB near you...

Where the opportunity lies in PCB tools as in all applications is integrating more and more of the design workflow into the primary PCB tool. Read More...

Use of nanoindentation to measure and map mechanical properties of SAC 305 solder

The nanoindentation technique is used to characterize a RoHS solder alloy in situ, and is applicable to material qualification and failure analysis. Read More...

Minimize crosstalk with optimized PCB routing technique

At gigabit rates, data pair ordering has a significant impact on crosstalk. Read More...

Loss in a channel: Rule of Thumb #9

This rule of thumb enables us to estimate the attenuation at the Nyquist for a lossy, uniform channel. Read More...

Samsung’s Galaxy S5 production issues

Waiting for a Galaxy S5? Don’t hold your breath. Read More...

PCB characteristics affect PDN performance

Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that have the minimum impact on the system performance. Read More...

PCB design: Best Practices Series

Following these steps can greatly aid in the successful creation of a PCB while avoiding costly errors. All the examples in this series are developed using the NI Multisim design environment, however the same concepts apply when using different EDA tools. Read More...

NPI software links PCB design and manufacturing operations

Mentor Graphics’ Valor NPI (new product introduction) software is now fully integrated with the company’s Xpedition PCB design platform to deliver a seamless, automated flow for the design, fabrication, and assembly of PCBs. Read More...

6 tips for transferring a PCB schematic to layout

PCB Design Best Practices: Six things to consider when transferring a PCB schematic to layout. All the examples in this article are developed using the NI Multisim design environment; however, the same concepts apply when using different EDA tools. Read More...

Common PCB design mistakes

Here is a quick summary of some common PCB mistakes. Read More...

Upverter Web EDA gets major revamp

The Web-based capture/simulation/PCB service gets a big facelift. Read More...

Validate serial port interfaces early to save cost

At-speed functional validation of serial interfaces makes plenty of cents Read More...

Tips for PCB design management

PCB Design Best Practices: Here’s what you need to keep in mind for net management and managing PCB layers. All the examples in this article are developed using the NI Multisim design environment, however the same concepts apply when using different EDA tools. Read More...

Mentor impresses with PCB layout software

I talked with a team at Mentor Graphics to find out about their new Xpedition layout solution. Read More...

6 tips for choosing PCB components

PCB Design Best Practices: Six things to consider when making PCB component choices based on part footprints. Read More...

>> SEE ALL

Safety flasher warns of high voltage

A low power circuit warns the user that high voltage is present. Read More...

Best Design Ideas of 2013Q3

We present the best Design Ideas of the last quarter! Read More...

Soldering iron driver bridge controls temperature

With a power supply and a replacement soldering handle you can implement this temperature-controlled soldering iron driver. Read More...

Novel Q-meter

This highly unusual "cross-quad" circuit topology finds application measuring Q. Read More...

Convert any signal to exactly 50% duty cycle

How would you process a variable frequency signal to always maintain a 50% duty-cycle? Here's one way. Read More...

One I/O line drives shift register with strobe

This Design Idea shows how a single microcontroller port can drive a lot of output lines through shift register. Read More...

A circuit for mains synchronization has two separate outputs for each half-period

Generate independent short pulses at positive- and negative-going AC mains zero crossings. Read More...

Read 10 or more switches using only two I/O pins of a microcontroller

Use a decoded counter to easily read one or multiple switch closures. Read More...

>> SEE ALL

NPI software links PCB design and manufacturing operations

Mentor Graphics’ Valor NPI (new product introduction) software is now fully integrated with the company’s Xpedition PCB design platform to deliver a seamless, automated flow for the design, fabrication, and assembly of PCBs. Read More...

Liquid crystal thermal-measurement system reveals hot spots

An imaging camera and software provide temperature resolution to 0.1°C. Read More...

Prototyping boards target Raspberry Pi and BeagleBone

Mikronauts’ line of easy-to-assemble prototyping boards, which includes versions that are specifically designed for the Raspberry Pi and BeagleBone hardware platforms, are silk-screened on both sides, highlighting power and signal buses and taking the guesswork out of finding the signals under the solder mask. Read More...

Circuit board plotter leverages UV laser

The ProtoMat D104 circuit board plotter from German manufacturer LPKF performs mechanical and laser machining in one system, carving circuit tracks out of fully coated base materials by negative contour routing, while an integrated UV laser extends processing to sensitive materials and allows structuring down to an ultra-fine pitch. Read More...

Checksum, ECT roll out flying-probe alternative for board test

CheckSum and Everett Charles Technologies (ECT) jointly announced the Tilt 12KN universal-probe test system, which delivers in-circuit coverage and increased throughput using Tilt fixturing at a low bed-of-nails tooling cost of about $2 per pin. Read More...

System brings thermal characterization to the test site

The ATS-535 Thermostream from InTest Thermal Solutions performs temperature testing and conditioning of components, parts, hybrids, modules, subassemblies, and printed circuit boards at the test bench, on the production floor, or in the lab. Read More...

JOT inline router automates PCB depaneling

According to manufacturer JOT Automation, its router is one of the smallest and most cost-effective inline routing solutions for automated depaneling of PCBs used in smart phones, tablet computers, PCs, motherboards, automotive electronics, and practically any electronic product. Read More...

Altium’s 3-D PCB toolset eases rigid-flex design

Focusing on core PCB design technology, Altium Designer 14 now supports flex and rigid-flex design, including schematic capture, 3-D PCB layout, analysis, and programmable design—all in a single unified platform. Read More...

ICT system conserves production floor space

Compliant with SMEMA (Surface Mount Equipment Manufacturers Association) specifications to enable seamless integration into high-volume production lines, the fully automated Medalist i3070 Series 5i inline ICT (in-circuit test) system from Agilent requires 33% less floor space than standard 3070 systems. Read More...

Stacking connectors ensure reliability in harsh environments

Built with a locking mechanism that offers both tactile and audible feedback when properly mated, stacking connectors in the FCN-280 series from Fujitsu maintain a secure board-to-board connection in rugged industrial environments. Read More...

Stamped CPU heat sink improves air convection by up to 5%

ASSMANN WSW has introduced the 'Stamped CPU Heat Sinks' series, a combination of 'CROSS-CUT' and 'Finger-Shaped heat sinks'. Read More...

Mini PCI Express board adds CAN functionality to any modern PC

Measuring 30x51mm, the Kvaser Mini PCI Express HS is a highly integrated CAN add-on board that adds a single, high speed CAN channel to any standard computer board with mini PCI Express capability. Read More...

Low-profile ferrite-bead arrays permit high-density mounting

Offering a compact EMI filtering option for circuit designers, ferrite-bead arrays in the ACSB series from Abracon come in surface-mount packages ranging in size from 5.60x5.00x1.50 mm to 5.60x4.80x3.00 mm. Read More...

Board-level shields help solve EMI issues

TE Connectivity has introduced shielding products that provide isolation of board-level components, minimize crosstalk, and reduce susceptibility to electromagnetic interference without impacting system speed. Read More...

Power connector provides 60A to backplane line cards

Molex' EXTreme OrthoPower design solves a high-current delivery problem; the orthogonal direct-power connector configuration uses split-blade technology to deliver 60.0A total power to backplane line cards. Read More...

Tiny, smart, highly integrated Wi-Fi module

The EC19W01 from Econais Inc., claims to be the smallest, smartest and most integrated 802.11b/g/n Wi-Fi System In Package (SiP) module available. Read More...

Intel IoT gateway platform targets edge connectivity systems

Intel has announced its Gateway Solutions for the IoT (Internet of Things), combining its processors and Galileo board with software from Wind River and McAfee. Read More...

Flexible strain-relief boots have tight bend radius

Molex FlexiBend MPO/MTP cable assemblies are outfitted with a flexible boot to ease cable routing and accommodate low-profile installations where cabinet doors or front panels might interfere with conventional straight-style bend-limiting boots. Read More...

IPEmotion software gets CAN traffic analyzer, improved visualization

Automotive measurement technology provider Ipetronik has introduced version 2014 R1 of its popular IPEmotion data acquisition software. Read More...

ARM Cortex A9 MCU development board runs Linux

Silica has launched a new ArchiTech development board that offers a low cost streamlined platform for Linux based designs. Read More...

10GbE integrated connector module trims profile

Aimed at 10-Gbps server, router, and storage applications, Pulse Electronics’ JT3-1101HL 10GBaseT RJ45 integrated connector module (ICM) has an installed height of just 9.04 mm above the pc board. Read More...

Audio codec features low, always-on power levels

Dialog's DA7212 audio codec has low always-on power consumption (650 µW) which can extend the battery life of portable devices – including new ‘wearables' such as smart watches and connected fitness devices. Read More...

Card brings rich set of audio functions to Raspberry Pi

Jointly developed by element14 and Wolfson Microelectronics, the Wolfson audio card for the Raspberry Pi supplies multiple types of input sources and outputs to enable high-definition audio capture and playback. Read More...

>> SEE ALL

Teardown: iPhone 5s

Go inside the iPhone 5s to see the tech, the parts, what's better, and what's the same, as iFixit tears it down. Read More...

Teardown: Samsung Galaxy Note 3 still the category leader

TechInsights breaks down the processors, memory, and design wins in this teardown of the Galaxy Note 3. Read More...

Teardown: Airbag controller

Check out this airbag controller teardown, courtesy of Dave Jones from the EEVblog. Read More...

Teardown: OBD-II Bluetooth adapter

Peer inside an unbelievably low-cost OBD-II to Bluetooth "dongle." Read More...

Teardown: What's inside Google Glass?

With both intrigue and concern about Glass, this teardown takes a model apart to bring you a detailed view into the electronics guts of the in-demand device. Read More...

>> SEE ALL

Getting EMC design right – First time, Part 1

We start this extensive book serialization by looking at grounding and planes. Read More...

The case for rigid-flex PCB technology

Once reserved for specialized and higher-end applications, mixed rigid-flex PCBs are trickling down into the mainstream. Read More...

Use of nanoindentation to measure and map mechanical properties of SAC 305 solder

The nanoindentation technique is used to characterize a RoHS solder alloy in situ, and is applicable to material qualification and failure analysis. Read More...

Minimize crosstalk with optimized PCB routing technique

At gigabit rates, data pair ordering has a significant impact on crosstalk. Read More...

PCB characteristics affect PDN performance

Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that have the minimum impact on the system performance. Read More...

6 tips for transferring a PCB schematic to layout

PCB Design Best Practices: Six things to consider when transferring a PCB schematic to layout. All the examples in this article are developed using the NI Multisim design environment; however, the same concepts apply when using different EDA tools. Read More...

Tips for PCB design management

PCB Design Best Practices: Here’s what you need to keep in mind for net management and managing PCB layers. All the examples in this article are developed using the NI Multisim design environment, however the same concepts apply when using different EDA tools. Read More...

6 tips for choosing PCB components

PCB Design Best Practices: Six things to consider when making PCB component choices based on part footprints. Read More...

5 tips for PCB schematic file management

Best practices recommendations for file and project management in a PCB design. All the examples in this article are developed using the NI Multisim design environment, however the same concepts apply when using different EDA tools. Read More...

Embedding components within PCB substrates

Embedding components within a PCB substrate offers a range of benefits in terms of space and performance. But this alternative approach to product design demands support from the entire supply chain, including EDA vendors. Read More...

Measure PDN on a budget

There are many very good analyzers available for measuring PDN, but many of these are above our price range. Here are a couple of ways to evaluate a power distribution network design for less cost. Read More...

PCB failure: Electrical overstress assessment

Michelle Woolley shares three of her failure analysis projects that move beyond the simple diagnosis of “electrical overstress.” Read More...

Component placement tips and strategies

Part 3 of the printed circuit board design best practices series offers tips for placing components and finalizing a PCB board design. Read More...

How to improve measurements of via properties

An improved probing method aims to eliminate uncertainties for loop inductance measurements. This paper looks at the properties and effects on the measurement of two different via structures in a power integrity environment. Read More...

What are molded interconnect devices?

In this article, Shane Stafford explains what MIDs are and details the use of laser direct structuring for manufacturing them. Read More...

Roundup: PCB protection/coatings

Selecting the right coating and method of application for a particular industry such as military/aerospace, industrial, automotive, etc. will also help extend the life of the PCB. Read More...

Manage EMI from high-speed digital interfaces

EMI management by design is a key component to achieving mutual transparency between interfaces and radios that are present in mobile devices. Read More...

Rule of Thumb #5: Capacitance per length of 50 Ohm transmission lines in FR4

This rule of thumb estimates the capacitance per length of all 50 Ohm lines in FR4. Read More...

PCB Design Basics: Example design flow

This series of articles discusses the different steps of PCB development from the basics of creating a design schematic with specific requirements, to finalizing a board and preparing it for fabrication. This article outlines an example design flow. Read More...

Profiles in Design: Eric Bogatin

If you have the good fortune to know Eric Bogatin, you already know that he is happily willing to share his knowledge, humor, hunger for learning, and teaching skills. In this interview, the DesignCon veteran sits down with EDN to reflect on his career in signal integrity and wonder about the future. Read More...

>> SEE ALL

04.15.2014

The case for rigid-flex PCB technology

Once reserved for specialized and higher-end applications, mixed rigid-flex PCBs are trickling down into the mainstream.Read more...

FEATURED RESOURCES