Electronics Protection - May/June 2013 - (Page 20)
Select-A-Shield RF Shielded Tent Closure System
Select Fabricators, Inc. has
developed two non-radiating
door closure systems that reduce RF/EMI leakage, a single
door double magnet system
and a double door single
magnet system. Focused on
minimizing leakage, improving isolation, and providing easy entry and exit of the enclosures,
Select developed the patent pending door systems.
The single door system with two layers of magnet is available
on Select-A-Shield tabletop RF EMI shielded test boxes. The 12
desktop models from 2 by 2 by 2 feet to 4 by 4 by 4 feet include
the patent pending top flap door opening that provides ease
of use and secure closure. Two continuous magnet strips are
permanently attached to three sides of the opening resulting in an
RF EMI tight enclosure seal. Internal testing resulted in shielding
effectiveness of the door to 94 dB for the door panel at 916 MHz.
The double door system with a single layer of magnet in two
separate doors is the new standard on all 16 models of standard
size walk-in tents and all custom configured enclosures. This closure system can be specified to open in or out for ease of entry.
A single strip of magnet along three sides of the door provides a
tight seal, lighter weight doors, and a lower threshold for improved access.
Select-A-Shield RF / EMI enclosures are constructed with RoHS
compliant, durable, lightweight, Silver/Copper/Nickel, Nova Select
fabric, Select’s proprietary highly conductive material. This flexible
material delivers maximum attenuation averaging -85 dB in shielding effectiveness in the range of 30 MHz to 1 GHz and an average of
-80 dB of shielding effectiveness in the range of 1 GHz to 10 GHz.
New Frequency Specific Microwave Absorbers
Leader Tech has introduced
a new line of microwave absorbers that are used to reduce
or eliminate electromagnetic
interference in high-frequency
applications. Multiple narrow
and broad band formulations
are available for attenuation of
frequencies ranging from 500
MHz to greater than 40 GHz. Additionally, custom tuned materials
are available for target frequency problems at no additional cost.
Leader Tech’s microwave absorbing materials convert unwanted
energy into heat work by exhibiting either high reflection or high
insertion loss. The magnetically or dielectrically loaded absorbers
are an easy to install, economical and highly effective solution.
Common applications include aircraft seals & ducts, cavity resonance and radar cross section reduction.
AVX’S 1PF Varistor Provides Bi-Directional
AVX Corp. has introduced a new series of automotive sub pF
varistors. Based on zinc-oxide varistor technology, AVX’s AECQ200-qualified Automotive Sub pF AG series varistors provide
ultra-low capacitance, bi-directional ESD protection in the sub 1
pF range for automotive circuits sensitive to capacitance. Featuring a capacitance value of 0.8 pF, in a compact 0402 package, the
AG series varistors exhibit excellent response times to ESD strikes.
AVX’s Automotive Sub pF AG
Series varistors exhibit reliability and
low insertion losses, offer multi-strike
capability, and are RoHS-compliant
and AEC-Q200-qualified. Featuring
a working voltage range of up to
16 V, a capacitance of 0.8 pF with
a tolerance of ±20 percent, and Ni
barrier/100 percent Sn terminations, AG Series varistors are well
suited for a range of applications including: antennas, RF circuits,
optics, HDMI, Firewire, Thunderbolt, high-speed communication
bus, GPS, camera link, sensors and touchscreen interfaces.
TE Circuit Protection’s SESD Product Family
Now Qualified for Automotive Applications
TE Connectivity’s Circuit
Protection business unit has
announced that eight products
in its SESD (Silicon ESD) series of
passive circuit protection devices
have now been AEC-Q101 qualified for use in automotive applications and specifically for invehicle “infotainment” systems.
Like the consumer electronics sector, automotive infotainment
systems can utilize ultra-high-speed data interfaces, including USB
2.0 and 3.0, HDMI 1.3 and 1.4, DisplayPort, Thunderbolt, V-byOne HS and LVDS protocols. These high-speed data lines can be
subject to ESD events, but TE Circuit Protection’s SESD product
family comprises a set of low-capacitance diodes capable of helping to protect these data lines. An additional advantage is that
the small XDFN (Extremely Thin Dual Flat No Leads) package size
of these SESD products saves PCB space, meeting the consumer
sector’s demand for highly compact devices.
The SESD series of devices are rated for a low capacitance of
0.20 pF (typical) for uni-directional devices, and 0.10 pF (typical)
for bi-directional devices, allowing signal integrity for high-speed
interfaces. The flow-through standard array package and small
XDFN package size simplifies PCB design, and provides solutions
for electronic design within severe space constraints.
New Double-Ridged Horn Antenna from Teseq
Has Frequency Range Up to 18 GHz
Teseq Inc., offers a double-ridged horn antenna that has a
frequency range of 6 GHz to 18 GHz. The PMM DR-01 is designed
for radiated emissions and immunity applications, featuring an
antenna factor of 36 dB/m to 41 dB/m and excellent sensitivity
for emissions measurements.
The PMM DR-01 is designed for use with Teseq’s PMM 9180
digital EMC/EMI receiver because of its size and axially located
RF connector. The battery-powered PMM 9180 is the only fullycompliant EMI receiver module on the market directly connected
to an antenna located inside the testing chamber. It has the ability
to transmit data outside the testing chamber via fiber optic cable,
eliminating signal losses that can exceed 20 dB.
When installed on a tripod or mast with the PMM 9180 and
connected to PMM receiver via a fiber optic cable, the PMM DR01 increases system sensitivity, accuracy and reduces overall error
by eliminating sources of uncertainty and signal loss through
scattering and attenuation of the coaxial cable. A tripod adapter
allows for simple vertical and horizontal polarization changes.
Table of Contents for the Digital Edition of Electronics Protection - May/June 2013
Electronics Protection - May/June 2013
Newer Technology Releases Next-Generation Power2U AC/USB In Wall Charging Solution
Raritan Boosts its DCIM Leadership Position with dcTrack 3.0
Specifiers of Enclosures for Components in Outdoor Applications: Be Aware of Material Selection Issues
Realizing the Many Benefits of Power System Relay Upgrades
How to Protect Electronic Circuits from Power Surges
A Little Diamond Goes a Long Way: Overcoming Thermal Limitations to Enable Next Generation Technology
Hardware Technology Eliminates Problems Caused by Using Traditional Captive Screws
Managing Lithium-Chemistry Batteries: It’s Mostly About Their Temperature
Protecting and Improving Electronic Components Performance
Advancements in Thermal Management Conference Preview
One Stop Systems Introduces nanoCUBE Desktop Expansion
Select-A-Shield RF Shielded Tent Closure System Is Non-Radiating
Thermoelectric Air Conditioner Delivers Maximum Cooling Regardless of Power Supply
On-line, Double-Conversion UPS from Emerson Network Power Earns Energy Star Qualification
Dirak Introduces a New Swinghandle
Dual-Cure Conformal Coating Eliminates Need for Additional Processing
Calendar of Events
Electronics Protection - May/June 2013