Optocoupler/LED/nixie tube/photoelectric device

The FOD2742 opto-isolated amplifier consists of the popular KA431 precision programmed shunt reference and optocoupler. The optocoupler is a gallium arsenide (GaAs) light emitting diode optically coupled to a silicon phototransistor. It has 3 levels of reference withstand voltage = 2%, 1% and 0.5%. Current transfer rate (CTR) ranges from 100% to 200%. It also has an excellent temperature coefficient of 50 ppm/°C. It is primarily used as an error amplifier/reference voltage/optocoupler function in isolated AC-DC power supplies and DC-DC converters. When using the FOD2742, power supply designers can reduce component count and save space in compact encapsulation designs. The tight tolerance range reference eliminates the need for adjustment in many applications. The device is available in an 8-pin small outline encapsulation.

The FOD410, FOD4108, FOD4116, and FOD4118 devices consist of an infrared light-emitting diode coupled with a hybrid triac formed using two antiparallel SCRs to form a three-terminal capable of driving a discrete triac. Triac function. The FOD4116 and FOD4118 use high efficiency infrared light emitting diodes to provide increased trigger sensitivity. These devices feature a standard 6-pin dual-inline plug-in (DIP) encapsulation.

The HCPL3700M Voltage/Current Threshold Sensing Optocoupler consists of an AlGaAs LED connected to a threshold sensing input buffer IC that is optically coupled to a high gain Darlington output. The input buffer chip is capable of controlling the threshold level over a wide input voltage range using a single resistor. The output is TTL and CMOS compatible.