Magnetics Business & Technology - Winter 2015 - (Page 4)
New Process Recycles Magnets from Factory Floor
A new recycling method developed by scientists at the Critical
Materials Institute, a DOE Energy led by Ames Laboratory, recovers valuable rare-earth magnetic material from manufacturing waste
and creates useful magnets out of it. Efficient waste-recovery methods for rare-earth metals are one way to reduce demand for these
limited mined resources.
The process, which inexpensively processes and directly reuses
samarium-cobalt waste powders as raw material, can be used to create polymer-bonded magnets that are comparable in performance
to commercial bonded magnets made from new materials. It can
also be used to make sintered magnets (formed by pressure compaction and heat).
Inductive Components from SMP Offer Expanded Performance Range
SMP Sintermetalle Prometheus GmbH & Co KG (SMP) has expanded the performance range
of its products. The range of inductive components is designed for currents up to 3,000 A and
frequencies up to 500 kHz, which can be increased to as much as 2 MHz in special applications.
SMP uses powder composite materials that have been developed and manufactured entirely inhouse and feature lower eddy current and
magnetic reversal losses.
The inductive components of this medium-size, family-owned business are noted for
their low loss balances, optimal EMC properties, quiet running and compact, lightweight
design. They are also maintenance-free. The
three-dimensional isotropy of the materials
enables compact, lightweight structures, because the magnetic circuits are minimized.
This also lowers the magnetic field strength,
and the quantity of winding material used
can be significantly reduced. Special, magnetorestriction-free materials ensure that components run quietly. These materials, which are developed and produced according to individual customer specifications, have a high saturation induction, up to 2 Tesla. And the oscillation behavior of the choke can be adjusted specifically by using
certain materials or appropriate, magnetically coupled constructions with multiple coils.
Depending on their application, the components are designed either as single-conductor
chokes for high-current applications, individual chokes, choke modules or LC filters. They can
be manufactured with dimensions ranging from 19 mm to 300 mm, weighing from 0.05 kg to
130 kg, and up to temperature class H (up to 180°C). Protection classes up to IP66 are available
according to the intended application. All components are RoHS and REACH compliant, and
CE- and EAC certified. The materials used are UL listed. SMP has its own, UL approved insulation
system and in-house capability to issue UL certification up to 1,000 A and 1,000 V; for higher
currents and voltages, certification is carried out externally.
Ultra-Low Profile, Shielded, SMT Power Inductors for Small
Pulse Electronics Corp. has released a family of six new
ultra-low profile SMT shielded inductors for compact pointof-load and mobile devices. With mounted height profiles of
1.0 mm to 3.2 mm, these inductors are suited for today's mobile computing, home automation, portable POS and other
small handheld devices.
These ultra-low profile inductors have core geometries
and construction that enable high currents with no radiated
magnetic fields to interfere with associated components.
The ultra-low-profile design has a metalized core termination that provides improved shock resistance characteristics
without impacting the height of the part. The family consists
of six series of parts, the PA4330, PA4331, PA4332, PA4333, PA4334, and PA4335, which vary by
footprint, current rating and inductance range.
Magnetics Business & Technology * Winter 2015
Volume 14, Issue 3
Editor & Publisher
Director of Content
Sue Hannebrink, Scott Webster,
Robert Schaudt, Judy Lamare
Director of Support Services/Circulation
Advertising and Sales
Scott Webster, Advertising Sales Manager
Marsha Grillo, Director
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Table of Contents for the Digital Edition of Magnetics Business & Technology - Winter 2015
What the Heck Happened to the Magnet Industry?
An Introduction to Resonant Inductive Power Transfer
Research & Development
Magnetics 2016: Preview
2016 Resource Guide
Marketplace / Advertising Index
Spontaneous Thoughts: Small Ball
Magnetics Business & Technology - Winter 2015