DALLAS, 1 Dec. 2007. TT Electronics Optek Technology in Dallas is offering axial optical isolators with plastic optical fiber to help power electronics engineers isolate high-voltage input/output circuits over varying distances.
The OPI1270 series axial fiber optic isolator has a visible red LED emitter and a phototransistor detector in separate opaque molded plastic modules, linked by a shrouded optical cable that shields the optical signal from dust and other contaminations.
The devices are for applications "that require high-voltage isolation -- as strong as 15 kilovolts -- especially in dirty or contaminated industrial environments," says Alan Bennett, Optek Technology's vice president of sales and marketing.
The isolators are connected by a flexible optical cable in standard isolation distances of 18, 26, 32, 40, 66,or 80 millimeters. Custom cable lengths are available and the emitter's design does not require the sensor housings to be in precise optical alignment. The isolator series conforms to UL Standard 1577 (File #E58730).
Applications include industrial, medical, and office equipment, as well as electrical isolation circuits in harsh environments.
The OPI1270 series are rated for 15 kilovolts and carry a power dissipation rating of 100 milliwatts. The AlInGaP LED (emits red light with a peak wavelength of 645 nanometers, with on-state collector current ranging from 1.2 to 2.3 volts and maximum collector dark current of 80 amps.
The phototransistor exhibits a maximum collector current of 50 milliamps. Collector-emitter breakdown voltage is 33 volts, and emitter-collector breakdown voltage is 5.5 volts. The operating temperature range is -20 to 75 degrees Celsius, and the device is also compatible with high temperature soldering processes of 260 C.
The isolators are RoHS-compliant. For more information contact Optek online at www.optekinc.com.
