**BUG**
ITR9606-F wrong pinout.
Actually 3 pin is Collector, 4 pin is Emitter
But in your database 3 pin is Emitter and 4 pin is Collector
https://yadi.sk/i/VNthsyvo3HVECq
Here is official datasheet
http://www.everlight.com/file/ProductFile/ITR9606-F.pdf