onsemi | FOD4218

Fairchild Semiconductor is a global leader in the design and production of optoelectronics products, offering a broad range of package platforms, incorporating various combinations of input and output configurations. 

Fairchild offers simple function optocouplers for low-bandwidth/general switching applications, high performance optocouplers for high bandwidth/high-gain applications, high-voltage optocoupler for AC load switching applications, and other complex functions that provide unique performance characteristics. 

The FOD4218 device consists of an infrared emitting diode coupled to a hybrid random phase triac formed with two inverse parallel SCRs which form the triac function capable of driving discrete triacs.   The FOD4218 utilizes a high efficiency infrared emitting diode which offers an improved trigger sensitivity.  Some key features are:  300mA on-state current, high blocking voltage (800V) and a high trigger sensitivity (1.3mA).

The FOD4218 is a 6-pin DIP Triac Driver.  It’s a single channel, through hole Triac with an operating temperature of -55 to +100 degrees Celsius.  The detector has an off-state output terminal voltage of 800 Volts and a peak on-state current of 300 mA.  The FOD4218 has an isolation voltage of 5000 Vrms. 

The FOD4218 can be used in an array of isolation applications such as: industrial controls, solid state relays, lighting controls, static power switches, and AC motor starters