Heat sinks

IERC offers a line of thermal link and fan top heat sinks with 6- to 8-segment fingers for improved retention and a smooth press-fit installation. The thermal links provide a retainer and a thermal path between semiconductor and heat sinks or chassis and offer transistor retention under high-vibration and shock loads. They can be installed with a rivet or eyelet, soldered to a PC pad or heat sink, and mounted with a single screw or with a threaded stud and hex nut.

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Leak detection

The Lightning ultra-fast dry leak detection system from Fastest, Inc. has a mass of 10 lb and can reduce cycle times by 80%. The detector performs pressure decay leak testing, sensing pressure changes to 0.00005 psi. An automatic calibration system correlates pressure loss to the internal NIST-traceable leak orifice. Self-diagnostic messages and setup procedures can be integrated into an automated system, and test results can then be downloaded on a computer or PDA for analysis.

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Spincoat system

The G3 Series of spincoat systems from Specialty Coating Systems coats materials on planar substrates, including photoresists, polyamides, metallo-organics, dopants, and silica films. Design of the G3 Series incorporates microprocessor-based, closed-loop servometer control and includes 8-, 12-, and 15-in bowl models in three compact enclosure sizes. The 12- and 15-in models are only available as programmable units. Features include safety-interlocked covers and a provision for external control on the programmable units via a communication port. Units can store and execute 30 programs with up to 20 steps each and are controllable in 1.0 rotation increments and 0.1 sec timing increments.

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Waveform analyzer

The Loctite fluid waveform analyzer from Henkel Loctite Corp. is a dispense detection system that offers zero-defect manufacturing applications requiring high-quality production and data inspection. The system uses real-time data acquisition to detect broken or plugged dispense nozzles, nozzle voids, lack of dispense, undersized or oversized beads, and air bubbles. The waveform output is comparable to a standard pre-programmed waveform, and during an out-of-control condition, the system delivers an output signal.

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Servo inclinometer

Jewel Instruments, LLC's LCF-2310 Series is a rugged, biaxial, fluid damped, flexure suspension servo inclinometer. It provides full range output of ±5.0 V dc and features 3 Hz of natural frequency, 1 µm radian resolution, and an input range of ±3°. Units can operate from -40 to +80°C with a survival temperature of -60 to +90°C and can withstand shock to 1500 g. The seal of the LCF-2310 is splash proof, making it suitable for outdoor use in industrial, commercial, and aerospace applications.

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Acoustic microphones

The Vibration Division of PCB Piezotronics, Inc. offers a line of prepolarized, array, and precision condenser microphones. The prepolarized pressure and field-free microphones are available in 1/4- and 1/2-in sizes. Operating from ICP sensor power, the microphones are designed for use in applications including sound power testing, engine noise, outdoor noise monitoring, and acoustic chamber testing. Series 130 array microphones also function with ICP sensor power and can be assembled with a multi-channel, simultaneous sound pressure data-acquisition system with 16 or more channels to create a system.

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Miniature sensor

Shockwatch, a division of Media Recovery Inc., manufactures a small tubular sensor that has a 3/32-in diameter by 11/16-in length. The sensor was designed to indicate past handling or shipping damage while mounted on board or inside avionic and military instruments and is available in nine different sensitivity or impact threshold levels. The indicator is small enough to fit within any chassis or housing without interfering with the host product and may be permanently secured with adhesives, glue, tape, or clips.

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Balanced accelerometer

The Model PDT-500 piezoelectric accelerometer from Columbia Research Laboratories was designed for use in electrically noisy, high-temperature environments associated with electrical power-generation systems. The hermetically sealed accelerometer is constructed to enhance rejection of electromagnetically and electrostatically induced noise by incorporating an electrically balanced piezoceramic crystal assembly that is dielectrically isolated from the stainless-steel case to minimize noise currents induced through ground loops in the mounting structure. The unit operates to 500°F (260°C), and internal filtering extends operating frequency range to 10 kHz when used with ac charge-type signal conditioners.

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Hydraulic jacks

The RJ-2000 series of hydraulic jacks for regional aircraft from Columbus Jack Corp. complies with military standards, including height to width ratios, safety factors for material strength, and all-steel structural components. Major components are accessible and removable for inspections and servicing, and replacement parts are available from local sources. Individually tested designs are obtainable for most regional aircraft, including Beech, Bombardier, Canadair, Cessna, deHavilland, Embraer, Fairchild, Gulfstream, and Learjet.

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Phenolic honeycomb

The Gillcore HK Kevlar-reinforced phenolic honeycomb from M.C. Gill Corp. meets structural core needs. The high strength and stiffness of Kevlar allow for use of lower-density cores, which results in a potential for weight savings over commonly used materials such as Nomex. The HK core offers the benefit of first-generation aramids but with improved shear strength, modulus, fatigue resistance, dimensional stability, and hot/wet properties.

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