The SI1413EDH-T1-E3 is an opto-isolator produced by Vishay. It is a dual channel bipolar transistor output opto-isolator, with a current transfer ratio (CTR) of 170-420 %. It has a high insulation voltage, rated for 4.2 kVrms, and a low input current of 1.5mA. It has low saturation voltage, with a max of 1V, and an enable time of 0.8µs. It has a maximum operating frequency of 10kHz, and an operating temperature range of -55°C to 125°C. The package type is through-hole, in an inline 4-pin epoxy-encapsulated SMT package. This isolator is suitable for a variety of applications, including load/power switching, communication isolation, and level shifting between different voltage supplies.