CH300       CH350            CH390

Isocom Limited, Europe's only manufacturer of high reliability optocouplers has announced three new optocoupler devices, designed for use in both commercial and military hybrid assembly applications.

The new CH300, CH350 and CH390 optocouplers offer considerable space saving advantages over dual-in-line optocouplers.  They are housed in hermetically sealed ceramic packages. Electrical contact is made by wire bonding to gold thick film contacts on the perimeter of the devices. All devices offer an input to output isolation voltage of 1000 DC and are guaranteed to perform within a temperature range of -55°C to 125°C which makes them ideal for military and other ruggedised applications in the hybrid industry.

The CH300 comprises a high radiance light emitting diode and a phototransistor in a package measuring 3mm by 3.5mm by 1.4mm. It has a minimum current transfer ratio of 50% at 25°C. The input diode has an operating current as low as 1.0mA and a forward voltage of 1.5V. For a collector-emitter voltage of 5V and a forward current of 1mA, the device has a turn-on and turn-off time of 25µs.

The CH350 is a single inverting optically coupled logic gate and consists of a high radiance light emitting diode and a high gain integrated photodetector. It measures 3.8mm by 4.5mm and 1.7mm high. The input diode has a typical forward voltage of 1.5V, at its specified forward current of 13mA. The output detector requires a supply voltage of 5V and produces an output current of 10mA. The maximum package power dissipation is 150mW. The CH350 offers a minimum current transfer ratio of 100% and is capable of operating at 5Mbits per second. It has a maximum high level supply current of 15mA and a maximum low level supply current of 19mA, for a supply voltage of 5.5V.

The CH390 is a dual optocoupler composed of a light emitting diode, optically coupled to an integrated high gain photon detector. All devices are manufactured at Isocom Limited's UK factory, which is both IECQ-CECC and ISO9001:2008 approved. All devices undergo rigorous 100% testing and in addition various high reliability test options are offered. The company is committed to stringent quality, reliability and inspection standards.