Nov 6 2009 12:00AM | Permalink | Email this | Comments (0) |
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The miniature, 0.5W OVS5MxBCR4 LED package series has a 120° viewing angle and a water-clear lens. The package has a 150-mA power dissipation of 0.48W for white, warm-white, and blue LEDs; 0.51W for green LEDs; and 0.33W for red, amber, and yellow LEDs. The devices provide 4000-, 4500-, and 5000-mcd luminous intensity for the red, amber, and yellow packages, respectively. Luminous flux is 25 lm for the white, warm-white, and green LEDs and 6 for the blue LEDs. The devices operate over a –40 to +100°C temperature range. Measuring 3.5×3.5×1.2 mm in a surface-mount housing, the OVS5MxBCR4 series costs 25 cents (1000) in amber, red, and yellow; 45 cents for white and warm white; 52 cents for blue; and 72 cents for green.

Optek Technology,www.optekinc.com

Nov 5 2009 12:00AM | Permalink | Email this | Comments (0) |
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Passing the 3000g shock test, the OptoCooler HV14 thermoelectric cooler meets requirements for the military standard 883E Method 2002 mechanical shock. At 85°C, the high-voltage, heat-pumping thermoelectric module operates at a 2.7V maximum voltage and pumps 1.5W of heat. The device creates a 60°C maximum temperature differential between the hot and cold sides with no heat load, suiting cooling and temperature control of optoelectronic devices, including laser diodes, avalanche photodiodes, and high-brightness LEDs, Available in a 3×3-mm footprint, the OptoCooler HV14 thermoelectric cooler costs $18 (1000).

Nextreme Thermal Solutions, www.nextreme.com

Nov 4 2009 12:00AM | Permalink | Email this | Comments (0) |
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The LM3424 high-brightness-LED driver with temperature-management control supports the use of an online design environment. The vendor’s Webench LED designer supports the device, which enables lightning designers to build thermally reliable systems. The driver works in indoor, outdoor, and automotive applications and enables programming of temperature and slope breakpoints, allowing safe operation of the LEDs. During an overtemperature condition, the product’s thermal-foldback circuitry reduces the regulated current through the LEDs. A reduced current dims the LEDs to a programmed range, and the LEDs remain within that range until returning to a safe operating temperature. The device can drive as many as 18 high-brightness LEDs in series with a 2A output current and allows regulation of currents based on buck, boost, SEPIC, flyback, and bu...Read More

Nov 3 2009 2:13PM | Permalink | Email this | Comments (0) |
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The self-wetting adhesive protector sheets reduce surface damage to touchscreens and flat-panel displays in use or during shipping, preserving the optical quality and extending the life of the touch device. A self-wetting adhesive applies itself by spontaneously wetting out on smooth surfaces with no or low finger pressure, adhering to a display or touchscreen, providing high shear resistance and preventing sheet displacement. The repositionable sheets come in antiglare, clear hard-coat, and antireflective coated versions of the clear protector sheets. Optical properties of the clear protector sheet include 91% transmissivity with 1% haze, and the antiglare protectors provide 90% transmissivity with 8% haze. Available in a maximum 0.007-in. thickness, the protector sheets have a –30 to +70°C operating temperature. The protector sheets c...Read More

Nov 2 2009 12:00AM | Permalink | Email this | Comments (0) |
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Aiming at hybrid-electric vehicles, the low-power ACPL-M71T and the ACPL-M72T 15-MBd LED-drive optocouplers feature 40-kV/µsec common-mode rejection at a 1000V typical common-mode voltage. Operating over a –40 to +125°C temperature range, the single-channel devices suit use in CANbus- and microcontroller-interface applications. The ACPL-M71T provides 26-nsec propagation delay at a 10-mA typical forward current, and the ACPL-M72T has a 60-nsec propagation delay at a 4-mA typical forward current. Available in SOIC-5 packages, the devices cost $2.43 (1000).

Avago Technologies, www.avagotech.com