Impulse Optics
Encinitas, CA 92024
Nov 22, 2006 Designed to work with lasers at variety of wavelengths, Variable Attenuator/Beamsplitter can be used as beamsplitter in holography and precision interferometry applications and as attenuator for general laboratory applications. It divides incident polarized light beam into 2 beams by 90° and intensity ratio of beams can be continuously varied by rotating input half-wave plate. Polarizing beamsplitting cube is built in with 532, 632.8, 800, and 1,064 nm wavelength options.

Valpey-Fisher Corp.
Hopkinton, MA 01748
Oct 06, 2006 Featuring internal voltage regulator, Model VFJA100 jitter attenuator provides output frequency of up to 1 GHz with ultra low jitter of less than 0.200 ps. Timing module integrates internal synthesizer that locks to input reference clock and multiplies it to desired output frequency. Unit is designed for applications in SONET/SDH/ATM, DWDM Line Card, 10 Gigabit Ethernet, and forward error correction.

International Manufacturing Services, Inc. (IMS)
Portsmouth, RI 02871
Sep 25, 2006 Suited for RF/microwave applications and communications-oriented circuitry, IMA2391 is operational to 15 GHz in properly matched, continuous 50 ohm system. Architecture is characterized by alumina substrate with solderable input terminals on top. Available in 1 dB increments over its entire range, with tolerance as low as ±0.2 dB, 1206-sized product has nominal impedance of 50 ohms; 75 or 100 ohm impedances are available. Input power handling is 1 W.

JDSU
San Jose, CA 95131
Apr 07, 2006 Designed as portable, complete solutions for field testing in outside plants, SmartClass access field testers help carriers test broadband access networks. Tools provide test solutions for FTTx/PON, DWDM, CWDM, and xDSL technologies, verifying broadband connectivity and service through access network to customer premise. SmartClass ADSL is suited for ADSL 1/2/2+ testing, while SmartClass OTS-55 optical test set handles dark fiber installation and troubleshooting.

Elma Electronic Inc.
Fremont, CA 94538
Mar 29, 2006 Type 04 switch is available in over 100 standard configurations, and is used in applications as selector switch or audio attenuator. With up to 24 positions, it offers contacts in hard gold or gold flash over hard silver. Product is available with shaft dia of 6 mm and ¼ in., and works within specifications even after 25,000 switching cycles. Rugged switch is suited for medical, industrial, audio, and homeland security/defense applications.

Precision Airconvey Corp.
Newark, DE 19702
Feb 13, 2006 Developed for installation in automated trim, scrap, and waste handling systems, PAC Acoustical 90 provides users with 90° radius elbow engineered as sound attenuation device. It reduces sound pressure levels created during cutting and evacuating of film, foil, laminate, paper, and other materials. Silent elbow provides flexibility for configuring and installing sound attenuated systems in space-restricted facilities.

M/A-COM, Inc.
Lowell, MA 01853
Nov 15, 2005 Suited for applications that require monotonic performance, RoHS-compliant MAATSS0022 is 400-2,500 MHz, 5-Bit serial controlled attenuator housed in lead-free MSOP-10 package. This 0.5 dB step GaAs MMIC digital attenuator requires external dc blocking capacitors on RF ports, single positive supply voltage, and 5 individual bit control voltages. It is fabricated using GaAs 1.0 micron process, which features full chip passivation.

Vishay Intertechnology, Inc.
Malvern, PA 19355 2143
Nov 03, 2005 Rated at 0.040 W, Model CZA04S features impedance of 50 Ω, while Model CZA06S is rated at 0.075 W with impedance values of 50, 75, 100, 300, and 600 Ω. Both surface mount units offer attenuation ranges and tolerance values of 1-5 dB at 0.3 dB (L) and 6-20 dB at 0.5 dB (H). They are suited for RF signal attenuation applications in telecom and mobile wireless products. Model CZA04S measures 0.039 x 0.039 x 0.014 in. and Model CZA06S is 0.063 x 0.059 x 0.020 in.

Picor, a subsidiary of Vicor Corporation
North Smithfield, RI 02896
May 03, 2005 Model QPO-2 System-in-a-Package uses active filtering to reduce supply output ripple and noise by over 30 dB from 1–500 kHz. Its architecture improves transient response and ensures quiet point-of-load regulation when used with switching power supplies. Unit can be tailored to meet system needs and operates over output voltage range of 0.3–5.5 Vdc. Applications include test and measurement, distributed point-of-load power systems, and medical instrumentation.

Vicor Corp.
Andover, MA 01810 5424
Feb 10, 2005 High-boost Model VI-HAM is a universal ac input, PFC front-end module optimized for use with Series 375 DC-DC converters up to 600 W. Consisting of full-wave rectifier and high-frequency, zero-current switching boost converter, unit includes active inrush current limiting, over temperature and short circuit protection, control, and housekeeping circuitry.

International Manufacturing Services, Inc. (IMS)
Portsmouth, RI 02871
Oct 28, 2004 Operational to 4 GHz, IMA303 surface mount (SMT) thick film T-pad attenuator is available from 1–20 dB in 1 dB steps. Power handling on input is 2 W. Attenuator, comprised of alumina substrate measuring 0.145 x 0.122 x 0.020 in., has impedance of 50 ohm on input and output with VSWR of 1.25:1 at dc to 4 GHz.

EMC Technology
Stuart, FL 34997
Aug 03, 2004 Thermopad® Coaxial TVA attenuators feature SMA male-to-SMA female interface and nominal impedance of 50 ohm. Able to cover dc to 6 GHz frequency range, devices exhibit VSWR of 1.35 at 1 GHz, attenuation accuracy of ±0.5 dB, and TCA tolerance of ±0.001 dB/dB/ºC. Products have operating temperature range of -55 to +150°C and feature 2.0 W power rating. Power derating is 100% at 125ºC, derating to 0% at 150ºC.

Tyco Electronics Corp.
Harrisburg, PA 17105-3608
Feb 04, 2004 Series EEJ features 20 A filter, attenuating 48 db at 30 Mhz in common mode for non-medical versions. Various terminations and installation types are available. Units have UL/CSA/VDE agency approvals and are suited for computer workstations, networking equipment, telecom-datacom equipment, medical devices, test and measurement devices, fitness equipment, and other industry applications.

JP Sercel Associates, Inc.
Manchester, NH 03102
Sep 10, 2003 Model UM-VA UV Excimer Laser Variable Beam Attenuator allows laser users to perform optics adjustments at low laser power settings for safer conditions. Dynamic range is nominally from 5-90% plus 100% transmission, while typical transmission range is less than 2% to greater than 94%. Variable transmission filter allows wide range of energy adjustment. Manual or motorized versions are available, with standard or zero beam walkoff configurations.

International Mfg. Services, Inc.
Portsmouth, RI 02871 2435
Jul 31, 2003 Thermally conductive thick-film chip resistors and attenuators, characterized at 10, 20, and 40 GHz frequency bands, mount face down on circuit board or hybrid substrate. Resistor element is within same plane as rest of circuit to minimize capacitive effects of wraparound termination. Aluminum-nitride power-chip terminations offer 50 ohm performance into millimeter frequency bands. Metal terminations are available in platinum, silver, and gold.

Vicor Corp.
Andover, MA 01810 5424
Feb 10, 2003 QuietPower™ QPO-1 provides >20 dB of conducted differential noise attenuation from 60 Hz to 500 kHz. Rated for 10 A, it can be used with switchmode power supplies having output voltages from 3–30 Vdc. Closed-loop architecture features precise point of load voltage regulation. QPO-1 measures 1 x 1 x 0.2 in. and supports parallel operation for high current requirements. It is surface-mountable with Land Grid Array or Ball Grid Array terminations.

State Of The Art, Inc.
State College, PA 16803
Jul 15, 2002 Compact, lightweight devices are available with attenuation factors of 1-20 dB in 1/2 dB increments with frequency range from dc to 20 GHz. Available tolerances are ±0.5 dB and ±1 dB. Power dissipation ranges from 1/8 to 1/2 watt. VSWR is as low as 1.05. Attenuation stability is typically better than ±0.5 dB. Applications include power switches, frequency converters, antennas, power dividers, low noise amplifiers, and passive signal buffers.

Prem Magnetics Inc.
McHenry, IL 60050
May 09, 2002 SPG-100 and SPG-101 Wide Band Shield Bead Ferrite Chokes attenuate EMI and other unwanted signals in circuits without contributing to power losses at lower frequencies or DC. Impedances range from 20 to 500 ohms and are obtained over frequencies from 1.0 to 400 MHz. Currents are limited only by #22 or #24 AWG tinned copper wire used in construction. Each core is 0.235 in. dia by 0.400 in. long with leads extending radially 1.0 in. from end.