PRODUCTS OPTOELECTRONICS NEW HIGH POWER SURFACE-MOUNT INFRA-RED AND ULTRA-VIOLET LEDS


inspection and sensing. The compact 3.5mm by 3.5mm


High Power SMD LED device is available in both UV and IR types, with a number of integral lens options providing different output beam angles and a ceramic substrate giving enhanced thermal properties. Available UV wavelengths include 365nm, 385nm and 395nm and IR wavelengths include 850nm and


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a new range of surface-mount high-power ultra-violet and


infra-red LED emitters has been launched by OMC. The high power SMD LED series is available in two package styles and suits a wide range of applications, including curing, data communications,


940nm. The second package style in the


series is the larger Multichip UV LED, measuring 6.8mm x 6.8mm. This 7W device offers very high power output and features a glass lens for superior reliability and extended product life. As the device


includes multiple LED chips, these can be configured to allow the device to emit more than one UV wavelength should the application require it. “Our new high power SMD IR and


UV LED series has been developed to provide customers with more versatile solutions for their industrial, detection and data communications applications.” said William Heath, OMC’s Commercial Director. “The range of package sizes, lensing options and device powers is designed to offer maximum flexibility for integrating infrared or ultraviolet LEDs into designs.” www.omc-uk.com


LEDS FOR HORTICULTURE


Mouser Electronics, Inc. is now stocking Luxeon SunPlus Series LEDs from Lumileds. These new LEDs, designed specifically for horticulture, are binned and tested based on photosynthetic photon flux (PPF) to ensure ease of system design for grow lights. The LEDs enable specific wavelength tuning for greenhouses, vertical farms, and other horticulture applications. Agriculture groups ranging from local


DIMMING LED DRIVER WITH INTEGRATED 30V MOSFET AND SCHOTTKY DIODE


A current-mode boost-type LED driver has been introduced by Diodes Incorporated that provides programmable brightness for LED backlighting of portable devices. The company’s AL3050 device is said to integrate advanced dimming features, small solution size, low BOM-cost and high efficiency making it well- suited for use in single-cell Li-ion based equipment with smaller LCD panels, such as feature/smart phones, portable media players, GPS receivers and other ultra- mobile devices. The solution features an integrated 30V 0.6Ω


MOSFET and power Schottky diode, that can drive up to eight LEDs in series with the capability to connect multiple LED strings in parallel. It offers modes for regular PWM dimming with a 100:1 deep dimming ratio


and a single-wire digital-dimming mode that provides a 32-step programmable brightness capability. The boost converter operates at a fixed 750kHz switching frequency to reduce output ripple, improve conversion efficiency and allow for the use of small external components. The AL3050 has been designed to enhance reliable system performance with robust LED-short and LED-


open protection and system-start current limits, as well as providing standard over-current, over-voltage and over-temperature functionality. www.diodes.com


growers to governmental agencies have started adopting energy-efficient lighting, water-saving cultivation methods, and other green technologies. These shifts in processes have enabled highly localised growth of fruits and vegetables within urban areas. This range of LEDs, supports indoor and


greenhouse farming by delivering precise light wavelengths and optimised spectra that complement or replace natural sunlight for improved crop yields. www.mouser.com


A new series of extremely compact LED emitters measuring just a fraction of a millimetre across is being launched by OMC. The new Micro Series has been developed for use in indication and display applications on miniaturised or highly compact products which would normally be too small for conventional LEDs, in particular consumer electronics and digital products. The smallest emitter in the Micro Series measures just 650 x 350 x 200 microns. Despite their tiny footprint, the devices have a very high output, comparable to traditional-sized ultrabright LEDs. www.omc-uk.com


NEW RANGE OF OPTICALLY CLEAR ENCAPSULANTS RELEASED FOR LEDS AND ELECTRONICS


A new range of optically clear encapsulants that help deliver better performance in electronic assemblies has been developed by Techsil. The new range includes the company’s


RTV27844 - a crystal clear, low viscosity, two- part silicone, which cures at room temperature to a high strength rubber with a thermal conductivity of 0.45W/mK. Whilst the PU22985 is a two-part water clear


potting polyurethane, which cures to form a tough 85 Shore A material with good abrasion and hydrolysis resistance and thermal conductivity of 0.3W/mK. Developed for potting of luminaires, LEDs and doming applications. The MG 8322 is a two-part clear potting


/ ELECTRONICS


epoxy, which provides a tough resilient finish to environmental and chemical ingress; used to pot LEDs and electronic assemblies in protective blocks. Additionally, the TSE3051 is 1-part silicone


which cures to a soft transparent gel. With low viscosity it is able to penetrate complex assemblies and once cured provides cushioning for delicate components and protection from humidity and dirt. From high performance potting materials to


thermal management solutions and adhesives for bonding assemblies, Techsil supply a variety of materials to provide environmental protection, extend service life and improved performance of electronic assemblies. www.techsil.co.uk


ELECTRONICS | NOVEMBER 2016 23


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