Broadband power splitter has eight positions. Housed in a surface-mount package, an eight-way 0° power splitter operates over a frequency range of 10 to 850 MHz. The 75-ohm Model JCPS-8-850-75 provides 25-dB typical isolation, 0.7-dB insertion loss >9 dB, and 0.7-dB maximum amplitude unbalance. Specified for maximum input power of 1W, the power splitter exhibits input and output VSWRs of 1.35:1 and 1.25:1, respectively. Mini-Circuits, Brooklyn, NY. (718) 934-4500.
Thermoelectric device provides spot cooling. Used for spot cooling CPUs, sensors, and ASICs, a thermoelectric cooler brings temperatures to 100°C below ambient, accurate to within ±0.01°C. The module is a semiconductor heat pump with an MTBF of >200,000 hours and comes in sizes ranging from 0.37 to 2.17 in. sq. For a single-stage version, the maximum heat-pumping capacity ranges from 1 to 90W, with a maximum temperature differential of 65°C. The device costs about $15. ACK Technology Inc, Easton, MA. (508) 230-9251.
VMEbus chassis line adds seven-slot unit. The VJV-11 system chassis furnishes up to seven VMEbus slots in 7 in. of rack space. The 7317319-in.-wide unit fills the gap in the VV-11 family between the five-slot VCV-11 and the 12-slot VHV-11. The VJV-11 series is offered in a number of configurations, including card-cage-only, mass-storage-only, and combination systems. The Model 2x card cage has up to seven front- or rear-access 6U3160-mm VME slots. The Model 16 handles up to six half-height, 5.25-in. drives or two full-height and two half-height, 5.25-in. drives, all accessed via the front. Prices start at $1850. Zoltech Corp, Van Nuys, CA. (818) 780-1800.
Socket adapter converts 0.400-in. centers to 0.300 in. A pc-board adapter lets you replace obsolete 32-pin devices on 0.400-in. centers with 32-pin devices on 0.300-in. centers. The Correct-A-Chip socket adapter consists of a 32-pin 0.300-in. center-top female socket of black UL 94V-O glass-filled polyester thermoplastic and a pc board of black FR-4 plastic mounted to a transition pc board that brings the pins out on 0.400-in. centers. The adapter, which has an operating temperature of 221°F and an insertion force of 180g/pin, costs $3.18 (5000). Aries Electronics Inc, Frenchtown, NJ. (908) 996-6841.
Connector has integral fiber-alignment system. Designed to fit into any standard SC mounting location, the OptoClip fiber-optic connection system aligns fibers to tolerances comparable to that of ferrules. A shutter swings into place when the end plugs are in the disconnect position to protect fiber from contamination and to protect the eye from laser radiation. The OptoClip accommodates all standard fiber types with 125-mm cladding and jacket sizes of 900 µm to 3 mm in either single-mode or multimode versions. Prices range from $18 to $27 per mated pair, depending on style and quantity. Molex Inc, Lisle, IL. (708) 969-4550.
Receptacles have 0.100-in. center spacing. Based on a cantilever spring design, the 300 series of top-entry 0.025-in.-sq receptacles offers 0.100-in. spacing between contacts and plating of selective gold (15 or 30 µin.) or tin all over. Devices are offered in standard-profile (0.330 in.), low-profile solder tail (0.265 in.), and surface-mount configurations. Solder-tail versions have single or dual rows with two through 52 contacts per row. Surface-mount versions have dual rows of two through 15 contacts per row. Prices range from $0.02 to $0.035 per position, depending on plating and quantity. Specialty Electronics Inc, Landrum, SC. (803) 457-3824
Headers employ two-tier in-line design. The ELFA series of 0.200-in. (5-mm) headers provides two contact rows that are vertically and horizontally in line with each other to create a single rectangular plane for the mating plugs. Offered with two to 20 positions per level, the headers mate with the vendor's ELFP, ELFT, and ELFF pluggable terminal blocks, as well as terminal blocks from other manufacturers. Options include gold-plated contacts, keying tabs, hot-stamp marking, and marking labels. Typical unit price is <$2 (OEM). PCD Inc, Peabody, MA. (508) 532-8800.
Stick-on heat spreaders fit semiconductors. Thermally conductive heat spreaders dissipate heat away from µPs and other semiconductor devices in space-restricted applications where conventional heat sinks cannot be used. T-Wing heat spreaders are thin, flexible cooling devices with a pressure-sensitive silicone adhesive backing. They are made of 0.007-in.-thick copper, with 0.0015-in.-thick, black PVF electrically insulating film on both sides. Overall thickness is 0.013 in. Offered in several standard sizes, the heat spreaders can also be die-cut in custom configurations. Price varies with size and shape. PressCut Industries, Dallas, TX. (214) 956-9100.
Handheld enclosures are RFI-screened. Suitable for data acquisition, test and measurement, and other instruments that require RFI screening, Veronex hand- held enclosures achieve attenuation levels ranging from 100 dB at 200 kHz to 45 dB at 1 GHz. The case's nickel acrylic-paint finish is resistant to atmospheric corrosion and oxidation and is scratch-proof. Four standard sizes are available, ranging from 90×50×16 mm to 190×100×60 mm. Prices start at $14.90. Vero Electronics Inc, Hamden, CT. (203) 288-8001.