The Latest in Compliance Engineering Products
and Services • 2005 EMC Update
RFI, and environmental gaskets offer affordability and quality for
high-performance applications. A unique spiral design meets demands
for low compression set, long life, and high shielding. Gaskets
meet requirements including FCC, EC, HIRF, Tempest, and RoHS. Configurations
are available in groove and surface-mount options. Diameters measure
from 0.034 to 1.5 in. Spira Manufacturing Corp.,
North Hollywood, CA; tel: 818-764-8222; fax: 818-764-9880; e-mail:
email@example.com; Internet: www.spira-emi.com.
company is an A2LA-accredited electromagnetic compatibility (EMC)
center for worldwide regulatory compliance. Component and subassembly
testing is provided along with full vehicle testing. Anechoic chambers
are available to fit all needs. The 10-m anechoic chamber can handle
products up to 20 ft wide and 16 ft tall. The flush-mounted turntable
spins test items up to 25,000 lb. NARTE-certified engineering assistance
is provided for all EMC compliance needs. Radiometrics,
Romeoville, IL; tel: 815-293-0772; fax: 815-293-0820; e-mail: firstname.lastname@example.org;
new traveling-wave tube amplifier (TWTA) has been designed for EMC
testing. Model 1000TP1G3 is a 1000/500-W pulse amplifier designed
to simulate the effect of a car driving through a beam of radar.
The amplifier offers the power to meet both the 600-V/m radar requirements
of the Ford ES-XW7T-1A278-AC and GM3097 specifications in two discrete
bands: 1.15–1.45 GHz and 2.7–3.1 GHz. Also available
are two microwave horn antennas that meet the 600-V/m requirements
of the above specifications. Model AT4318 operates within the 1.2–1.8
GHz range, while the AT4333 covers the 2.2–3.3 GHz range.
AR Worldwide RF/Microwave Instrumentation, Souderton,
PA; tel: 215-723-8181;
are specifically designed to withstand high temperatures for applications
such as under-hood sensors and oil-exploration parts. The X8R MLCC
capacitors are manufactured with an X8R dielectric material that
has a capacitance variation of 15% between –55° and 150°C.
Typical applications include wire-line logging tools such as gamma
ray receivers, acoustic transceivers, and microresistivity measurement
tools. They are available in voltages from 25 to 50 V with capacitance
tolerance of ±5%, ±10%, and ±20%. Standard and automotive AEC-Q200-qualified
options are available. AVX Corp., Myrtle Beach,
SC; tel: 843-448-9411; fax: 843-444-2864; Internet:
company offers more than 3000 grades of adhesives, sealants, and
coatings. The company's products include epoxies, silicones, polyurethanes,
anaerobics, and cyanoacrylates. Electrically conductive, thermally
conductive, and electrically insulative systems are available. Master
Bond produces technologically advanced formulations and provides
prompt technical assistance to help meet customers' needs. Master
Bond Inc., Hackensack, NJ; tel: 201-343-8983; fax: 201-343-2132;
e-mail: email@example.com; Internet: www.masterbond.com.
medium-, and high-power amplifiers are available for automotive,
aircraft, military, medical, electronics, and wireless markets.
Options include solid-state, traveling-wave tube, and tetrode tube
amplifiers. Antennas, E-field sensors, TEM cells, and other RF and
microwave accessories are also offered. The company is ISO 9001:2000
registered, and it builds in accordance with MIL-I-45208A.
Instruments for Industry, Ronkonkoma, NY; tel: 631-467-8400;
fax: 631-467-8558; e-mail: firstname.lastname@example.org; Internet: www.ifi.com.
American and international strain reliefs provide a liquid-tight
seal on the power cord entry and provide extra protection for power
cords. They extend cord life and reinforce the cord connection to
the equipment. Dome and flex style in NPT and PG thread types are
available. Interpower, Oskaloosa, IA; tel: 800-662-2290;
fax: 800-645-5360; e-mail: email@example.com.
dc-to-dc convertor is designed to provide high-quality onboard power
solutions in RF power amplifier systems and other distributed power
applications. The PKJ-N is DfE and RoHS compliant. Protection from
output overvoltage, input undervoltage, overtemperature, and output
short circuits are featured. It is 91.5% efficient at half load
and 91% at full load. A ground plane keeps radiated EMI to a minimum.
With 1500 V dc input to output isolation, the convertor meets isolation
requirements equivalent to basic insulation according to IEC/EN/UL60950.
Ericsson Power Modules, Plano TX; tel: 972-583-6910;
to meet NEBS Level III, UL/EN 60950, and EN 55024, a five-slot full-mesh
shelf management system provides high reliability and easy maintenance.
Features include a high-capacity
push-pull cooling scheme, high-performance shelf management, and
a replicated mesh backplane for 3.125 Gb/sec. The cooling scheme's
advanced software control enables operation at 200 W per slot even
in the event of a fan failure. Under normal operating conditions,
fan speeds are reduced to provide quiet operation. If a fan fails,
the other fans' speeds increase to 130% to compensate for lost airflow.
The unit also includes two front and two rear removable fans trays
for right-to-left airflow. Tracewell Systems, Westerville,
OH; tel: 614-846-6175; fax: 614-846-4450; e-mail: firstname.lastname@example.org;
self-contained four-decade frequency divider pod accepts transistor-transistor
logic (TTL) clock signals up to 100 MHz and generates f/10, f/100,
f/1000, and f/10,000 divided outputs. All divided outputs are synchronous
with the input frequency and can be used for triggering data-acquisition
systems, pattern generators, oscilloscopes, and networking and telecommunications
devices. The TTL input has a switchable 50/500 W input impedance
and can toggle up to 100 MHz. The four divided TTL outputs are back-matched
and can drive terminated or unterminated loads. Each output delivers
more than 2.2 V into a 50-W load. The unit includes an ac adapter
and BNC or SMA connectors for ready-to-use convenience on the bench
or in a system. Pulse Research Lab, Torrance, CA;
tel: 310-515-5330; fax: 310-515-0068; e-mail: email@example.com;
and Control Systems
power distribution and control systems can be adapted for domestic
and international configurations for OEMs and system integrators.
The system is rack and strip mounted. It provides circuit breaker
protection and EMI and RFI filtering. The system also has spike
and surge protection. Remote capabilities for the system include
both a power on-off and system reboot. Emergency shutdown, redundant
power, sequential power up and power down, and power regulation
features are also provided. The systems are UL, cUL, CSA, CE, and
T†V approved. Pulizzi Engineering Inc., Santa Ana,
CA; tel: 800-870-2248; fax: 605-334-2611; e-mail: firstname.lastname@example.org;
dc-to-dc micropower convertors have an integrated Schottky diode
and output disconnect circuitry. The LT3473 and LT3473A convertors
are low-profile DFN packages measuring 3 X 3 mm and 3 X 4 mm, respectively.
A constant 1.2-MHz switching frequency enables use of tiny capacitors
and inductors. The micropower convertor's internal 1-A switch delivers output of 80 mA at 25 V. Linear
Technology Corp., Milpitas, CA; tel: 408-432-1900, ext.
2419; fax: 408-434-0507; e-mail: email@example.com; Internet:
phase-lock-loop (PLL) clock synthesizers can support applications
such as PC peripheral devices, consumer electronics, and embedded
controller systems. The ASM3P2853A reduces electromagnetic interference
(EMI) at the clock source. Spread-spectrum clocking technology can
virtually eliminate EMI filter networks and ferrite beads, with
an added benefit that circuit board traces can be routed more effectively,
enhancing design flexibility and layout. Output of PLL is modulated
to spread bandwidth and decrease the peak amps of its harmonics.
System EMI is decreased. Packaged in an 8-pin SOIC, the ASM3P2853A
provides a 50-MHz spread-spectrum clock and a low-jitter 48-MHz
USB clock from a 25-MHz crystal source. Alliance Semiconductor
Corp., Santa Clara, CA; tel: 408-855-4900; Internet: www.alsc.com.
horn antennas are designed specifically for emissions and immunity
testing within the frequency range of 1–40 GHz. Each antenna
has linear polarization, medium gain, low VSWR, and constant antenna
factor. They come with a tripod mount that adapts to any tripod
with 1Ú4–20 male threads. Standard gain is 15 dB, but also
available is 10 or 20 dB. AH Systems, Chatsworth,
CA; tel: 818-998-0223; Internet: www.ahsystems.com.
and EMC testing can be performed for wireless products that require
regulatory compliance. The laboratory is accredited to ISO/IEC 17025,
and reports are accepted in more than 50 countries. Products meant
for the Japanese market can be tested. MiCom Labs,
Pleasanton, CA; tel: 888-642-6652; fax: 925-462 0306; e-mail: firstname.lastname@example.org;
tubing on a roll is specifically designed to protect electronic
components from electrostatic discharge. Metallic static-shield
polyethylene tubing has been tested to meet electrical and physical
requirements of MIL-PRF-81705D Type III and EIA 541 standards. The
packaging is suitable for protecting electronics, switchboard apparatuses,
printed circuit boards, transistors, and other sensitive components.
Better Packages, Shelton, CT; tel: 800-237-9151;
fax: 203-925-3705; e-mail: email@example.com; Internet: www. betterpackages.com.
d-connector metallized fabric-elastomer gaskets can shield most
9-pin through 50-pin cover connectors. Gaskets are offered in five
standard sizes and in multiple material thicknesses for each size.
The EMI and RFI shielding gaskets have compression set values of
less than 3%. Nickel plating over a highly conductive copper substrate
provides the electrical characteristics necessary for shielding
effectiveness of greater than 100 dB attenuation. Metallized fabric
is bonded to a low-compression-force, open-celled polyurethane foam.
Suitable for telecom and computer applications, conductive-fabric
gaskets are also offered in custom die-cut configurations. Tech-Etch
Inc., Plymouth, MA; tel: 508-747-0300; Internet: www.tech-etch.com.
protocol testers, one for UMTS and one for GSM, can be used to develop
mobile dual-mode terminals with new accompanying software. The CRTU-W
and the CRTU-G are equipped with CRTU-WA03 software to design custom
signaling tests that simulate different UMTS-to-GSM handover scenarios.
Complex processes can be combined in macros and predefined sample
scenarios to make programming more efficient. In addition to signaling,
voice or data applications can also be included in the test. Both
voice and data transmission can be tested. The complete system includes
the CRTU-WA03 software option. Rohde & Schwarz,
Columbia, MD; tel: 410-910-7800; e-mail: firstname.lastname@example.org;
surge-detection devices are designed as transient surge suppressors
for sensitive electronic equipment. The TST and TS models are configured
for either parallel or serial installation and include EMI filtering. The surge-protection devices
are line-load sensitive and interface with power cables via screw
terminals (barrier strips). Wire sizes vary with unit current ratings.
Each unit is self-contained in a rugged plastic enclosure and includes
a red LED status indicator. Dry contacts are a standard feature
on the 30- and 60-A models, and a telephony interface is an available
option on the 30-A model. Meter-Treater Inc., Lake
Park, FL; tel: 800-638-3788; e-mail: email@example.com; Internet:
company offers high-intensity radiated field-testing (HIRF) capability
in a mode-tuned chamber. Mode-tuned testing is performed to meet
the radiated susceptibility requirements for RTCA DO-160-D and MIL-416E.
The testing capability complements the company's existing HIRF testing
in an absorber-lined chamber where field strengths reach 1000–3000
V/m. The company also offers TCB and CAB certification services
and combined EMC and environmental stress testing. Elite
Electronic Engineering Inc., Downers Grove, IL; tel: 630-495-9770,
ext. 119; fax: 630-495-9785; e-mail: firstname.lastname@example.org;
company's high-wattage, noninductive planar power resistors are
designed to span from 3 to 50 Ω at 70°C. The BPC and BPR
resistors are through-hole planar power devices with thick-film
resistive elements on ceramic. The BPC series resistors have resistance
ranges from 0.1 Ω to 200 KΩ and standard tolerances of
±1%, ±2%, ±5%, and ±10%. TCRs are 100 ppm/°C, and operating
temperature range is from –55° to 125°C. Maximum operating
voltage is 300 and 500 V dc with a dielectric strength of 750 V.
BI Technologies, Glenrothes, Fife, Scotland; tel:
+44 1592 662200; e-mail: email@example.com;
printed circuit board shields have a fully enclosed ferrite body
augmented with an internal radio-frequency absorber membrane.
The shield mounts easily to circuit boards without soldering—either
by pressure-sensitive adhesive pads, screws, or rivets. The shield
has broadband effectiveness to 1.2 GHz for the ferrite body, with
extended performance from the absorber membrane to 5 GHz. FerriShield
Inc., Scranton, PA; tel: 570-961-5617; fax:
570-969-6274; e-mail: firstname.lastname@example.org; Internet:
only 1.11 X 1.65 X 0.4 in., isolated analog signal-conditioning
modules provide 1 kHz bandwidth. The 8B incorporates high-performance
modular I/O on a per-channel basis for any embedded monitoring or
measurement and control system. A special input circuit provides
protection against accidental connection of power-line voltages
up to 240 V ac continuous output. Isolation, at 1500 V rms, suppresses
transmission of common-mode spikes or surges. The 8B modules offer
±0.05% accuracy (including nonlinearity, hysteresis, and repeatability)
and ±0.02% linearity. Operating temperature ranges from –40°
to 85°C. The modules have ANSI/IEEE C37.90.1 transient protection
and meet EN 61000-6-4 and EN 61000-6-2 requirements. Housed in a
solid, potted thermoplastic plug-in-the-panel package with a flammability
rating of UL-94 V-0, the 8B family of isolated signal conditioners
is specifically designed to protect user equipment while reducing
electrical noise and enabling convenient system expansion and repair.
All 8B modules offer dimensional stability over temperature and
excellent stability over time. They also offer chemical resistance.
The modules do not require recalibration. Dataforth Corp.,
Tucson, AZ; tel: 800-444-7644; e-mail: email@example.com; Internet:
wide-band clamp-on current monitor has a hinge-type opening and
1/2-in. aperture. The monitor measures ac current with ±1% accuracy.
It operates at 25 Hz to 20 MHz, with a 3-dB bandwidth. The company
offers current monitors that can watch current transients, harmonics,
pulse, sine wave, and other complex waves. The typical bandwidth
is from 1 Hz to 20 MHz, with accuracy of ±1% or better. Pearson
Electronics, Palo Alto, CA; tel: 650-494-6444; e-mail:
firstname.lastname@example.org; Internet: www.pearsonelectronics.com.
a breaking capacity of 200 A at 250 V ac or 100 A at 125 V dc, a
surface-mount fuse maximizes circuit protection. Measuring 10 X
3 X 3 mm, the UMT 250 can replace axial or radial lead through-hole
fuses. It occupies approximately 80% less volume than a typical
microfuse or 5 X 20-mm cartridge fuse. Surface-mount components
provide high reliability and quality of connection to the printed
circuit board. The fuse meets IEC 60127-4 and UL 248-14 and is cURus
and VDE approved. Schurter Electronic Components,
Santa Rosa, CA; tel: 707-636-3000; fax: 707-636-3033; e-mail: info@
schurterinc.com; Internet: www. schurterinc.com.
series of surface-mount radio-frequency inductors provides an alternative
to equivalent military specifi-cation products. The SMRF 1010 series
was specifically designed for applications in military communications,
crystal oscillators, and wireless networks where military specification
products have traditionally been used. The inductors have current
ratings from 880 to 120 mA dc, based on a 35°C temperature rise
and a 90°C ambient temperature, and inductance from 0.12 to
27 µH. Gowanda Electronics, Gowanda, NY; tel: 716-532-2234;
fax: 716-532-2702; e-mail: email@example.com; Internet: www.gowanda.com.
3-D, time domain–based electromagnetic simulation design tool
enables rapid and accurate designs. The Microstripes tool uses solver
technology based on the transmission line matrix method, which is
faster and more efficient than other methods. The solver tolerates
rapid changes in grid density, large aspect ratios of grid cells,
and localized grinding, enabling the mesh requirements to be kept
to a minimum. The tool can generate a full-spectrum broadband analysis
in a single calculation, which enables it to design components including
microwave and radio-frequency devices, antennas, connectors, and
high-frequency integrated circuits. Flomerics Inc.,
Marlborough, MA; tel: 508-357-2012; fax: 508-357-2013;
and Cutoffs Brochure
company's thermal fuses and thermal cutoffs, designed for a wide
variety of applications, are presented in a brochure. The fuses
and cutoffs are manufactured in ISO 9001–approved facilities
to high-quality standards for performance and durability. Full descriptions
of features are listed with illustrations. In addition, all approved
safety standards are listed. Chatham Components Inc.,
Chatham, NJ; tel: 973-635-8075; fax: 973-635-6345; e-mail:
firstname.lastname@example.org; Internet: www.elcut.com.
company has introduced a line of clock and voltage-controlled oscillators
that use an application-specific integrated circuit (ASIC). The
ASIC was designed specifically for use in crystal oscillators to
provide low jitter (0.3 picosecond integrated jitter) and high frequencies
(up to 1.4 GHz). Two product lines are offered. The M2100 is a 5
X 7-mm SMD clock oscillator, and the M3100 is a 5 X 7-mm SMD voltage-controlled
oscillator. Both are available in frequencies from 150 MHz to 1400
MHz. A variety of deviation sensitivi-ties are available, enabling
the oscillators to be used in many applications currently filled
by surface acoustic wave oscillators. Mtron PTI,
Yankton, SD; tel: 800-762-8800; e-mail: email@example.com; Internet:
company has developed a series ceramic capacitor that can minimize
short-circuit risk. Two capacitors are serially connected, so that
if one fails, no short circuit occurs in the overall component.
The B37941X capacitors are available in size 0805 and ceramic material
X7R. Types designed for a rated voltage of 100 V cover a capacitance
range of 1–100 nF, and those for 50 V deliver 33 to 100 nF.
With voltage derating, the components may be operated at temperatures
up to 150°C and conform to AECQ200. Epcos,
Iselin, NJ; tel: 800-888-7729.
series of compact, low-cost power supply transformers are designed
for a wide range of applications. The compact transformers feature
a low-profile shape and low heat generation. They are suitable for
small and lightweight devices. The multiple-output transformers,
which measure 30 X 28 X 25 or 30 X 28 X 30 mm, have outputs of 25
or 50 W and operate at 25 or 35 kHz. Low-profile multiple-output
transformers are 36 X 42 X 23 mm with 65-W output and 40-kHz operating
frequency. TDK Corp. of America, Mt. Prospect,
IL; tel: 847-390-4419; e-mail: firstname.lastname@example.org; Internet: www.component.tdk.com.
modular EMC immunity test system includes remote personal digital
assistant control via a wireless local-area network (LAN). The wireless
LAN interface is nondirectional and can be used at a distance up
to 300 ft. Standard features include burst and surge pulses and
power quality simulations. Other models include ESD, magnetic fields,
and voltage variations. The system meets all IEC and EN testing
standards. Schaffner EMC Inc., Edison, NJ; tel:
732-225-9533, ext. 239; fax: 732-225-4789; e-mail: email@example.com;
oscillators and EMI suppression adapters are available for avionics,
military, and medical products. EMI and RFI oscillators are available
ranging from 4 MHz to 4 GHz. The company is ISO 9001:2000 and ISO
13485:2003 compliant. EMC Component Group, Santa
Clara, CA; tel: 408-330-9216; fax 408-330-0012; e-mail: firstname.lastname@example.org;
company offers specialized electronic products, including ferrite
cores, amorphous cores, powder cores, thermistors, bobbins, and
mounting hardware. The company offers rapid turnaround on custom
gapping and fabrication. Inventory programs offered include JIT,
kanban, and demand flow procurement. Dexter Magnetic Technologies,
Elk Grove Village, IL; tel: 800-775-3829; fax: 877-221-5052; Internet:
series of low-profile surface-mount printed circuit board test points
is RoHS compliant. The TP-107 series is engineered specifically
for use by fabricators of high-density surface-mount technology
printed wiring boards. A unique forming process effectively doubles
the surface area of the mounting. Therefore, an excess of 18 lbf
would be required to dislodge the test point. Additionally, the
TP-107 has a singular loop design to provide a positive and secure
location for miniature spring-loaded clips, probes, and hooks. The
test points offer a low profile measuring 0.090 in. Electrical specifications
include a current rating of 2 A and an operating temperature of
–55° to 125°C. Designed for automatic insertion by
industry-standard pick-and-place equipment and reflow soldering,
they are supplied on 12-mm wide, 4-mm pitch, conductive polycarbonate
tape that meets ANSI/EIA-481 standards. Components Corp.,
Denville, NJ; tel: 866-436-6126; fax: 973-361-5801; e-mail: email@example.com;