ISOCOM’s IS49 optocoupler is a popular hermetic ceramic device that has been used in a variety of space applications, such as the Yenisey A1 geostationary satellite. Package types include a 6-pin LCC package with dip-soldering options, as well as a surface-mount alternative, the 4N49.
ISOCOM’s IS49 is a hermetically sealed, single-channel transistor optocoupler consisting of an infrared emitting diode and a silicon phototransistor. This optocoupler has a maximum continuous current of 50 mA, a CTR in excess of 350% and a test voltage of 1,000 Vdc.
ISOCOM Limited is a British AS9100D and ISO9001:2015 accredited manufacturer of space and aerospace electronic components. All ISOCOM products are manufactured in its clean room manufacturing facilities in accordance with MIL-PRF38534 and MIL-PRF-19500 to ensure high quality, radiation resistant electronics.
Some ISOCOM components, such as the IS49 family, the CSM141A family and the CSM1800 family, were selected and tested by the Jet Propulsion Laboratory (JPL) and the Fraunhofer Institute. This included irradiation tests, neutral irradiation tests and displacement damage measurements.
The IS49 was TID tested to meet total dose levels of 150 Krad(Si) and displacement damage testing of 1 MeV x 1013. This optoisolator operates within the full military temperature range of -55oC to +125oC to ensure that this component is suitable for the severe radiation environments found in space applications.
This component is suitable for various other applications such as space equipment and systems, aerospace applications, military equipment and systems, medical instruments, MOS/CMOS applications, logic interfaces, data transmission, power supplies and modems. https://www.isocom.uk.com/news/is49-transistor-optocoupler