Semiconductor ElectronicThe OR-3H7A-TP-G with SOP-4 Optocouplers is a phototransistor output coupler manufactured by Orient Semiconductor Electronics. It is made up of a 4 pin surface-mount package using a single die consisting of an infrared light emitting element and a phototransistor. This product offers an extremely high insulation voltage between input and output, and a high isolation resistance. This allows this product to be used in a range of applications such as signal isolation and noise suppression. The product meets the EU's Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment directives, and is RoHS compliant.