OLC449 Radiation-Tolerant Optocoupler

Skyworks Solutions Inc OLC449 Radiation-Tolerant Optocoupler is a radiation-tolerant phototransistor non-hermetic surface-mount optocoupler. The optocoupler consists of an LED and N-P-N silicon phototransistor that is electrically isolated but optically coupled inside a non-hermetic six-pin Leadless Chip Carrier (LCC) package. This optocoupler offers electrical parameters similar to JEDEC registered 4N49 optocoupler, with a higher CTR and better CTR degradation characteristics due to radiation exposure. The hermetic surface mount variant is available as OLS449 in both high-reliability screened and non-screened catalog versions. This optocoupler is designed for a low LED operating current while providing excellent radiation tolerance margins. The OLC449 optocoupler features a radiation-tolerant version of the 4N49U. This optocoupler operates at 50mA continuous collector current and 40mA average input current.