The FT-0500, FT-0501, FT-0452 and FT-0453 devices each consist of an infrared emitting diode, optically coupled to a high speed photo detector transistor.

The FT-W13X are consists of an infrared emitting diode optically coupled to a high speed photo detector output. It is pack aged in a 8-pin wide body package and available in wide lead spacing and SMD options.

The FT-6N13X are consists of an infrared emitting diode optically coupled to a high speed photo detector output. It is pack aged in a 8-pin DIP package and available in wide lead spacing and SMD options.

The FT-S511 series devices each consist of an infrared emitting diode, optically coupled to a high speed photo detector transistor.