The invention provides a novel optical MOS
relay. The novel optical MOS
relay is characterized in that an input end is composed of an
infrared LED, a pin 1 of the input end is connected with the positive pole of the
infrared LED, and a pin 2 of the input end is connected with the negative pole of the
infrared LED; an output end is composed of a PDA and an
MOSFET integrated with an ESD and a
reverse recovery diode, the positive pole of the PDA is connected with the G pole of the
MOSFET, and the negative pole of the PDA is connected with the S pole of the
MOSFET; the D pole of the MOSFET is connected with a pin 4 and a pin 6 of the output end, and the S pole of the MOSFET is connected with a pin 5 of the output end; the infrared LED, the PDA, the MOSFET, the ESD and the
reverse recovery diode are all located in the same plane; the input end and the output end are formed by encapsulating an inner encapsulating material and an outer-layer black encapsulating material which are made of transparent or semitransparent resin. According to the optical MOS
relay, the antistatic capacity is improved, withstand
voltage of media between the input end and the output end is improved, on-state and switching losses are greatly reduced, and the switching speed is also increased.