"Toshiba's TLP109 mini flat coupler is a small outline coupler suitable for surface mounting.
The TLP109 consists of a high output power infrared LED optically coupled to a high speed photodiode transistor chip.
The TLP109 is housed in the SO6 package and guarantees a creepage distance of .
5.0 mm, an air gap of .
5.0 mm and an insulation thickness of .
0.4 mm.
This means that the TLP109 meets the requirements of international safety standards for reinforced insulation classes.
Pinout:1: Anode3: Cathode4: Emitter (GND)5: Collector (output)6:Vcc"