Optocoupler/LED/nixie tube/photoelectric device

The FOD420, FOD4208, FOD4216, and FOD4218 devices consist of an infrared light-emitting diode coupled to a hybrid any-phase triac formed using two antiparallel SCRs to form a triac capable of driving a discrete triac. Switches the triac function. The FOD4216 and FOD4218 use a high-efficiency infrared light-emitting diode to provide enhanced trigger sensitivity. These devices use a standard 6-pin dual-inline plug-in (DIP) encapsulation.

The 6N135M, 6N136M, HCPL4503M, HCPL2530M, and HCPL2531M optocouplers consist of an AlGaAs LED optically coupled to a high-speed phototransistor. A separate connection for photodiode biasing reduces the base-collector capacitance of the input transistor and is orders of magnitude faster than conventional phototransistors. The HCPL4503M has no internal connection to the phototransistor base, improving noise immunity. Internal interference shielding with excellent common-mode rejection up to 50,000 V/µs.