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

Components & Packaging

Rich Pell
Editor
A resource and community for engineers involved in the design, selection and application of electronic components and hardware, including resistors, capacitors, inductors, transistors, diodes connectors, switches, relays, cabling, IC and system packaging, enclosures, circuit protection devices and thermal management. The Center includes in-depth technical design articles, blogs, regulatory and industry updates, technical papers, webinars, product updates and reviews, design ideas, forums, commentary and Q&A.

Protecting against reverse polarity: Methods examined, Part 2

We now continue with four more Reverse Polarity Protection methods in this Part 2. Read More...

Protecting against reverse polarity: Methods examined, Part 1

Reverse polarity is a dangerous electrical condition that can be difficult to prevent once a system leaves the factory, so adding circuitry that protects against its effects is an important part of improving system reliability. This article looks at the many methods for protection and weighs their tradeoffs. Read More...

How to select flexible cable assemblies

With flexible cables instead of semi-rigid ones, assemblers can draw 2D knowing that when the cable is installed, it can be easily bent to fit correctly. But what should you look for in flexible cable? Read More...

ESD wrist-strap insulation decomposes

Several ESD wrist straps suddenly have exposed wires as the insulation fails and gets sticky. Read More...

The Circuit Designer's Companion: RF cables, twisted pair and crosstalk

Part 5 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." looks at coaxial cables, twisted pairs, and the issue of crosstalk and how to combat it. Read More...

Book Excerpt: Sevick’s Transmission Line Transformers, Chapter 9 Baluns

This chapter excerpted from Sevick’s Transmission Line Transformers describes the balun as a subset of transmission line transformers with an in-depth treatment of most used types. Read More...

Book review: Jerry Sevick’s Transmission Line Transformers

The following is a book review of what started out in 1987 as a compilation of research done on wideband transformers for matching vertical antennas to 50 ohm transmission lines. Read More...

The Circuit Designer's Companion: The safety earth and wiring/cables

Part 4 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." examines the safety earth and begins a look at the major types of wiring and cables. Read More...

Sensing Elements for Current Measurements, Part 1 of 3

Sensing elements for current: Sense Resistors Read More...

EDN Tablet Edition: Engineering state of mind

EDN has launched a new tablet edition, find out more in this editorial note from Patrick Mannion. Read More...

The Circuit Designer's Companion: Inter-board interfacing, star grounding & shielding

Part 3 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." covers inter-board interface signals, star grounding, and shielding. Read More...

Finding a quick-turn PCB shop

Many PCB shops offer fast & easy quoting and ordering of prototype to production quantities. Need help finding one? Here it is. Read More...

When smaller isn’t better in precision resistor applications

In precision analog, SMT resistors may not be the best solution. Read More...

Pad isolation and magic

A former colleague could do a circuit board magic trick using an insulating sleeve. Read More...

>> SEE ALL

Design Notes: Matched Resistor Networks for Precision Amplifier Applications

The actual performance of precision amplifiers and ADCs is often difficult to achieve since data sheet specifications assume ideal components. Carefully matched resistor networks can enable precision matching orders of magnitude better than discrete components, ensuring data sheet specifications are met for precision ICs. Read More...

Circuit's RMS output is linearly proportional to temperature over wide range

In this design idea the concept of the p-n diode driven at constant current is extrapolated, potentially eliminating voltage references and op amps. The result is a unique implementation of a simple but highly accurate temperature proportional circuit. Read More...

Photo meter assesses ambient light

When most PN-junction diodes are reverse biased, they will produce a small photovoltaic output as the light level is increased. Read More...

Quasistatic Spice model targets ceramic capacitors with Y5V dielectric

Run more accurate Spice simulations by accounting for the capacitance variation versus applied voltage. Read More...

Complementary-pair dc/dc converter simultaneously doubles, inverts supply voltage

Change a single positive supply into twice its positive and equal negative voltages. Read More...

Obtain a gain of 450 from one vacuum tube

Combine sand (silicon) with vacuum tube technology to get the best of both. Read More...

Simple solenoid driver is adaptable and efficient

Use capacitive reactance to save energy while holding a solenoid in the energized position. 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...

Rotary encoder with absolute readout offers high resolution and low cost

This Design Idea attempts to combine the advantages of the potentiometer with the endless operation of the mechanical-optical rotary encoder. Read More...

Technique maximizes converter efficiency

Run a switching voltage regulator from its own low-voltage output after it starts up. Read More...

>> SEE ALL

Chip resistors, diodes are industry's smallest

With its RASMID Series Rohm claims to have the smallest electronic components in the industry; the ultra-compact lines have superior dimensional accuracy, for high density, high-performance mobile and wearable products. Read More...

MLCCs feature reduced acoustic noise in 0402 package

A range of MLCCs from Murata have an extra interposer substrate that reduces acoustic "squealing" noise. Read More...

Path Finder mates PCB, IC package, & system design

The Xpedition Path Finder suite provides a single environment that gives cross-domain design teams the ability to model every device/interface. Read More...

Ultracap boasts 3400 farads, boosts transportation reliability

Maxwell Technologies, Inc. has added to the company's K2 series of ultracapacitor cells with a 2.85-volt, 3400-farad ultracapacitor cell that increases the range of available specific power and stored energy in the industry-standard 60 mm cylindrical 'K2' form factor. Read More...

10-Gbps multi-I/O connector fits wearable devices

TE Connectivity has engineered a high-speed multi-I/O connector to transfer USB 3.1 signals in a Micro USB 2.0 form factor to meet the demand for mobile devices to have increased functionality, higher speed, and larger screens. Read More...

SMD jumper switches are process-sealed

Surface-mount jumper DIP switches in the TDD series from C&K Components are sealed with a removable top tape to allow reflow soldering and washable assembly processing, while a bifurcated contact design increases electrical reliability. Read More...

Audio step attenuator with 47 positions offers precise volume control

Offered as the first in a series of new PCB-based audio switches, the A47 stepped attenuator from Elma Electronic provides 47 positions with selectable end-stops from one to six channels. Read More...

SiTime enters wearables, IoT markets with 32 kHz MEMS TCXO

32 kHz TCXO (temperature compensated oscillator) which they claim to be the smallest, lowest power device in the industry. With its tiny footprint and ultra-low power consumption Read More...

Molded enclosure houses Raspberry Pi Model B

Hammond Electronics has developed a new moulded enclosure specifically designed to house the Raspberry Pi Model B credit card sized computer. Read More...

High-voltage/high-current connector meets commercial EV challenges

Capable of handling up to 1000 V and 250 A per contact, the connectors withstand even the most extreme shock and vibration conditions found in today’s commercial vehicles. Read More...

Reverse-conducting IGBT cuts losses by 30%

Infineon Technologies has extended the latest generation of reverse conducting IGBTs for resonant applications with a new 650V component including a monolithically integrated RC diode. Read More...

Automotive gate drivers offer ultra-low propagation delay

For applications in vehicles with 48V and 400V supply voltages such as hybrid and electric drives, Texas Instruments has developed the UCC275xx-Q1 product family of AEC-Q100-qualified single- and dual-channel gate drivers. Read More...

Wire-to-board connector system targets LED-backlit LCD panels

Molex’ IllumiMate 1.00 and 1.25 mm pitch wire-to-board connector system provides design flexibility with multiple mating and voltage configurations. 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...

Current transducers measure to 25A, in PCB-mount format

LEM has added to its range a series of open-loop Hall-effect ASIC based devices measuring up to 25A DC, AC or pulsed Read More...

650V IGBTs claim 40% lower turn-off energy losses

ST's HB series of IGBTs claim up to 40% lower turn-off energy losses than competing high-frequency devices while reducing conduction losses by up to 30%. Read More...

>> SEE ALL

Currently no Items

The Circuit Designer's Companion: RF cables, twisted pair and crosstalk

Part 5 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." looks at coaxial cables, twisted pairs, and the issue of crosstalk and how to combat it. Read More...

The Circuit Designer's Companion: The safety earth and wiring/cables

Part 4 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." examines the safety earth and begins a look at the major types of wiring and cables. Read More...

The Circuit Designer's Companion: Inter-board interfacing, star grounding & shielding

Part 3 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." covers inter-board interface signals, star grounding, and shielding. Read More...

The Circuit Designer's Companion: Power supply returns & I/O signal grounding

Part 2 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." considers power supply returns and input/output signal grounding. Read More...

Piling functionality and its impact on packaging manufacturing and reliability

Packaging engineers must understand the dynamics of development, qualification, and HVM of FCBGA packages to keep pace with the ever-changing demands of industrial and automotive applications. Depending on the approach, the drive for higher performance can lead packaging engineers to either great rewards or great pains. Read More...

The Circuit Designer's Companion: Grounding and wiring

Part 1 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." begins a look at grounding: when to consider it, how chassis materials affect it, and the problem of ground loops. Read More...

LVPECL terminations - A circuit approach

Looking at LVPECL terminations from a circuit perspective shows how the important factors, output transistor currents and minimizing component count and power, account for the LVPECL termination topologies and component values of common terminations. Read More...

Avionics lightning protection design GUI

To select the appropriate components for a lightning protection circuit, the transient experienced during the lightning test must be transformed into the transients used to rate the components, as shown in their datasheets. This paper introduces a free tool that performs these transformations. Read More...

ESD target levels: Impacting ESD from components to systems

The Industry Council on ESD Target Levels can help the industry progress by addressing the semiconductor electronics technology roadmap in parallel with the necessary but realistic ESD roadmap. Read More...

Resistor datasheets: Reading between the lines

Many component datasheets should come with a warning label to the effect that terms such as "tolerance" and "TCR" are being used loosely. Read More...

Connect passive components to logic gates

By adding a few passive components to logic gates, you can make circuits such as level converters, frequency multipliers, phase detectors, line drivers, and pulse changers. Read More...

Resistors aren't resistors

At high frequencies, inductance and capacitance add reactance to what you think of as purely resistive components. Read More...

Bad crimp, bad news

Crimp those connectors properly, using the right equipment, or risk failures - or worse. Read More...

When wires become components

There are some electronic products that just have to be made by hand. Read More...

>> SEE ALL

ESD wrist-strap insulation decomposes

Several ESD wrist straps suddenly have exposed wires as the insulation fails and gets sticky. Read More...

Could your product be exempt from EMC testing?

There are some little known exemptions that I learned about when I was wading knee deep through the murky waters of several regulatory standards. I hope you can take advantage of a few of them and save yourself and your company some serious money. Read More...

What you should know about HBLEDs - and nobody will tell you, part 3

In this concluding installment, Ed introduces some of the basic considerations involved with selecting the right optics and power supply for your design. Ed wraps up the lesson with a "Top 10" list of LED design issues and an insider’s guide to the most important LED tech issues to watch in 2014. Read More...

Finding a quick-turn PCB shop

Many PCB shops offer fast & easy quoting and ordering of prototype to production quantities. Need help finding one? Here it is. Read More...

Can you analyze this circuit?

A ninth-grade physics class circuit problem has an answer, but is impossible to build. Would you teach this? Read More...

Pad isolation and magic

A former colleague could do a circuit board magic trick using an insulating sleeve. Read More...

Take a video tour of Steve Sandler's test lab

The founder of Picotest has a test bench that will make any engineer green with envy. See Sandler's equipment and how he uses it all. Read More...

Make Great-Sounding $40 Bucket Speakers in an Afternoon

Built from 5-gallon utility buckets, these speakers are tough enough for tailgating but sound good enough to put in your living room. Read More...

When reliability hangs by a "wall wart" thread

All those reliable electronic devices we count on have a weak link of the inconsistent and unknowable reliability of their accompanying AC/DC adapter; so, what are your options? 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...

>> SEE ALL

FEATURED RESOURCES