The OLF449 consists of an LED that is optically coupled to an
N-P-N silicon phototransistor, mounted in an eight-pin hermetic surface mount flat package. The leads can be formed to provide compliant solder connections to the mounting substrate.
Electrical parameters are similar to the JEDEC registered 4N49
optocoupler, but with much better CTR degradation characteristics due to radiation exposure. Special electrical
parametric selections are available on request.