Silicone Rubber

Bellofram Silicones, Newell, WV, offers silicone rubber material that meets Commercial Item Description (CID) AA59588 CL3B GR30, a rigorous standard that covers six classes of silicone rubber, in various grades. Within the broader AA59588 standard, the specific 3B class issues criteria for silicone rubber's tear and flex resistance, setting performance metrics in various grades, including grades 30, 50, 60, 70, and 80. These grades measure performance over repeated use. Grade 30 is the rarest, ensuring performance at 500,000 cycles (for comparison, the next, Grade 50, indicates 140,000 cycles). The company has the only product that meets AA59588 CL3B GR30, the absolute peak of expected performance over prolonged use.

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Din Rail Adaptors

Two new adaptors are available from OKW Enclosures, Bridgeville, PA, that enable any small plastic enclosure to be mounted on a DIN rail — saving space and speeding up installations. The adaptors are suitable for a range of electronics applications including automation, Industry 4.0/smart factory, and electronics modules. B6811751 is designed to fit TH35, TH15, and G32 DIN rails. It can be screwed to the back of the enclosure (wall thickness 3 mm) using two screws (supplied) and then located on the rail. The adaptor is molded from PA 66 (UL 94 V-0) in black (RAL 9005) as standard. B1300017 (off-white) or B1300019 (black) fits TH35 and G32 rails.

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Nested Wave Spring

Smalley, Lake Zurich, IL, has released a new nested wave springs series. The Spirawave springs are multiple turn, flat wire wave springs that are coiled in parallel to produce two to three times as much force as traditional single-turn wave springs. They can be used to replace stacks of single-turn springs, eliminating misalignment and inconsistent loading. The sturdy, tangle-resistant design allows for simple, time-saving automated handling. Standard nested Spirawave springs are available from 0.500 to 4 in. or from 16 to 3000 mm in carbon and stainless steel. Stock parts are available for overnight shipping.

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Noncontact Position Sensor

ASM Sensors, Elmhurst, IL, offers a contact-less, ultra-flat magnetostrictive position sensor for space-restricted applications. The Posichron® PCFP25 is an absolute, noncontact, and wear-free position sensor with measurement ranges from 100 to 5,750 mm. The sensor system consists of a magnetostrictive waveguide and a moveable position magnet. The 8-mm thick sensor is resistant to dirt, moisture, and dust. It resists shocks up to 50 g and has protection class IP67.

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Surface Measuring Instrument

Mahr Inc., Providence, RI, has added an instrument for roughness measurements to its new line of surface measuring instruments. The MarSurf GD series increases the speed of all moving axes to reduce the cycle time of the measurement process. The series enables profile and waviness evaluations to be carried out in addition to surface roughness evaluations. The drive units of the series move the probe with positioning speeds of up to 200 mm/s, making the systems up to 40 times faster than predecessors. All z-axis columns on the measuring stands are fully CNC-capable with fast positioning speeds of 50 mm/s.

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Feedthrough Filters

TTI, Inc., Fort Worth, TX, is now stocking of feedthrough filters from AVX. The W2F and W3F series offers a unique construction of feed-through capacitors with low parallel inductance and offers excellent decoupling capability for all high di/dt environments. The AEC Q200-qualified series provides significant noise reduction in digital circuits up to 5 GHz. They are available in 0805 and 1206 size packages with 50 and 100 V variations. Applications include Vcc power line conditioning, EMI suppression, and broadband I/O filtering.

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LCD Hourmeter

ENM Company, Chicago, IL, offers an LCD hourmeter with two factory preprogrammed service reminders. The series T49 accumulates time only when the engine's alternator is running or when the voltage is above 13 Vdc. The meter is 100 percent sealed and protected from shock and vibration. The self-powered meter keeps total running time displayed at all times. An hourglass icon flashes each second when running. When the preset alert monitor time is reached, the LCD will flash on the display every two seconds.

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Electrically Conductive Adhesive

A room-temperature curing, electrically conductive epoxy for electrical circuits, die attach, and EMI shielding is available from EpoxySet, Woonsocket, RI. EO-21M-5 is a silver-filled adhesive that bonds to most substrates including metals, ceramic, glass, and engineered plastics. It is suitable for solder replacement where a heat cure is not acceptable. It cures to a semirigid plastic that can withstand temperature cycling of –55 to 150 °C. It has been used to cryogenic temperatures offering low stress, thus preventing component fracturing. The low viscosity of 1,500 cps allows for easy mixing and dispensing.

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