Magnetics Business & Technology - Winter 2015 - (Page 16)
Pulse Electronics Offers High Isolation Power
Transformers in Low Profile SMT Package
Pulse Electronics Corp. has introduced a new series of 5KVrms
isolation power transformers for communications interfaces such
as RS485, CAN, MODBus and ProfiBus for automation, automotive, and smart grid applications. The PH9385 transformer series
achieves 12 mm creepage in a low-profile, compact, 17 by 16 by 7
mm surface mount package.
transformer is built with
a Sidecar package
that has the coil
inserted at one
side of the open
package and the
high isolation pins
placed on the other
side. This configuration
the coil and pins so
there is a greater
between them. It also enables the package to be smaller while still
maintaining an optimal creepage distance.
"Isolation in existing toroidal transformer packages is limited by
the proximity of the pins to the wound coil," said Gerard Healy,
product manager, Pulse Electronics Power Business Unit. "The isolation can be enhanced by encapsulation, but this adds cost. This
compact surface mount package achieves a high level of creepage
without requiring encapsulation, so besides getting great performance, they are less expensive than encapsulated transformers."
Pulse Electronics' new PH9385 series builds on its PH9085 series
of 2.5KV power transformers to offer protection for higher isolation applications. These transformers are RoHS-compliant and meet
standard EIA481 requirements. They are available in tube and tapeand-reel packaging. Prices start at about $0.84 (FCA HK) for 10,000
pieces. Lead time is eight weeks. Samples are immediately available.
Allegro MicroSystems, LLC Introduces New
Two-Wire Hall-Effect Latch
Allegro MicroSystems, LLC has introduced a two-wire Hall-effect
latch with increased magnetic sensitivity. The A1245 latch is produced on the Allegro advanced BiCMOS wafer fabrication process.
It implements Allegro's patented high frequency, 4-phase, chopperstabilization
techniques to achieve
over its full operating temperature
range, -40°C to
150°C. A Hall-effect
latch will be in the
high output current
state in the presence
of a magnetic south
polarity field of sufficient
and will remain in
this state until a sufficient north polarity field is present.
Two-wire latches are particularly advantageous in cost-sensitive
applications because they require one less wire for operation versus
the more traditional open-collector output switches. Additionally,
Magnetics Business & Technology * Winter 2015
the system designer inherently gains diagnostics because there is
always output current flowing, which should be in either of two
narrow ranges. Any current level not within these ranges indicates a
The A1245 is designed for speed and position sensing of ringmagnets or other moving/rotating assemblies in applications that
are safety-critical and/or have long wiring harnesses. Examples include automotive applications such as internal mode switch (IMS)
transmissions and transmission range switch (TRS)/manual level
position sensor (MLPS) shift selectors; electronic parking brake
motors; electronic power steering (EPS); and sunroof, tailgate
and other motors; industrial/consumer applications include white
goods, industrial/factory automation, and automatic doors. Overall
ruggedness, including industry leading ISO 7637-2 performance, is
achieved with an integrated voltage regulator, clamping diodes, ESD
protection, and reverse-battery protection.
The device is offered in two package styles. The LH is a SOT-23W
style, miniature low profile package for surface-mount applications.
The UA is 3-pin ultra-mini single inline packages (SIP) for throughhole mounting. Both packages are RoHS-compliant with 100 percent matte tin leadframe plating.
AVX Introduces Tantalum SMD Capacitors for
AVX Corp. has introduced the T4J Medical series tantalum SMD
capacitors. Specifically designed for use in implantable, non-lifesupport and non-implantable life support medical applications, T4J
Medical series capacitors exhibit high standard reliability of fewer
than 0.1 percent failures per 1,000 hours at 25°C and rated voltage, which is 10 times
better than standard
and low standard leakage current (DCL) values of 0.01CV. Manufactured and screened
using AVX's patented
and extremely effective Q-Process to ensure the removal of
any components that
may experience parametric shifts through customer processing or
display instability through life testing, T4J Medical series capacitors
feature two levels of statistical screening: T4J Standard for standard
DCL and ESR limits, and T4J Custom for specific DCL and ESR parameter limits, available down to 0.005CV on selected codes.
"The T4J Medical series tantalum SMD capacitors were explicitly
developed for implantable, non-life-support and non-implantable
life support medical applications, and feature higher reliability and
lower DCL than competing products currently available on the market, both of which are critical parameters in medical electronics
applications," said Brian Brunette, high reliability tantalum applications engineer, AVX.
RoHS-compliant and lead-free compatible, T4J Medical series
tantalum SMD capacitors are available in six case sizes spanning
1206 to 2924, seven voltages spanning 6.3 V to 50 V, and two terminations: 100 percent tin or SnPb. Capacitance values for the series
span 1 µF to 680 µF with a tolerance of ±10 percent, and operating
temperatures span -55°C to 125°C. T4J Medical series capacitors are
available packed on 7-inch reels or in bulk, and lead time for the
series is 12 weeks.
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