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Products from the MPMN Mailbox

Originally Published MPMN January 2005

PRODUCTS

Products from the MPMN Mailbox

Panel Mount LEDs

A series of new panel-mount LEDs are designed specifically for 120 V ac applications. The LEDs from Wilbrecht Electronics (St. Paul, MN; www.wilbrecht.com) can be used for new and retrofit applications. Available in 3 and 5 mm, the LEDs fit hole sizes ranging from 0.187 to 0.312 in. The units are sealed against moisture and dust, and an optional O-ring is available for an extra water-resistant seal. Brightness levels are daylight readable. A variety of housings, colors, and lens styles are offered.

Quartz Crystal Packaging

All-new quartz crystal packaging technology eliminates the recurring problems of ceramic shortages. Fox Electronics (Ft. Myers, FL; www.foxonline.com) offers its FQ series of crystal packaging in two- or four-pad configurations. The packaging's low-profile construction comes in three sizes: 10 X 4.5, 5 X 7, and 6 X 3.5 mm. Depending on package size, the crystals are available in frequencies ranging from 3.2 to 49 MHz, with a 30 ppm tolerance at 25°C. The RoHS-compliant packaging is compatible with existing ceramic packages.

Polypropylene Needle Hubs

A components supplier offers materials for building prototype needles. Polypropylene needle hubs from Small Parts Inc. (Miami Lakes, FL; www.smallparts.com) can be used with various types of tubing and adhesive. The hubs are also used in the company's blunt needle series. A needle-hub lab kit containing hypodermic and PTFE tubing, adhesive, and several gauges of hubs is also available.

High Power Density Ac/Dc Converter

Onboard active power factor correction and a 48-V output are combined in a 600 W ac/dc converter. The PF600-1 converter from C&D Technologies (Tucson, AZ; www.cdpoweronline.com) delivers a power density in excess of 90 W/cu in. It has an input range from 85 to 264 V ac. The converter measures 64.8 X 127 X 14.2 mm and operates at a fixed switching frequency of 300 kHz. A standby output can be used to power auxiliary circuits when the main output is inhibited. Units can be combined in serial and parallel arrays to meet requirements for high-power applications.

Fluoropolymer Heat Transfer Tubing

Fluoropolymer resin is blended with an inert, inorganic filler to enhance the resin's heat-transfer capabilities. Markel Corp. (Plymouth Meeting, PA; www.markelcorporation.com) has designed its HHTT high-heat-transfer tubing to replace traditional graphite-based fluoropolymer tubings. The thermal resistance of the polymer makes it suitable for use in heat exchange processes. The tubing is available in two base resins, fluorinated ethylene propylene (FEP) and perfluoroalkoxy (PFA).

Copyright ©2005 Medical Product Manufacturing News

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