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Optocoupler Series

Tue, 04/10/2001 - 11:27am
A new series of four-pin optocouplers that feature a 2 mm height profile was announced by Vishay. The new Vishay Telefunken Miniflat devices consist of a phototransistor optically coupled to a gallium arsenide infrared-emitting diode. Intended for current isolation, the eight new TCMT11xx Miniflat optocouplerss are optimized for miniaturized products such as PCMCIA cards, notebook modems, telecommunications products, programmable logic controllers, and other designs requiring a high level of package integration.

Built on Vishay Telefunken co-planar technology, the four-lead Miniflat optocouplers ensure maximum safety and reliability by providing a stable distance between the emitter and detector chips. Providing an insulation voltage of 3750 Vrms, the surface mountable devices also feature a transistor output and a forward current of 60 mA. Vishay offers eight different CTR options in the TCMT11xx family, with values ranging from 80% to 600%. Additional series features include a wide operating ambient temperature range spanning from – 40 ° C to 100 ° C, a low typical coupling capacitane of 0.3 pF, and a low temperature coefficient of current transfer ratio. All eight of the TCMT11xx devices are supplied in reel and tape packaging for high-speed assembly, with 3000 pieces per reel.

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