S400YR

Series:	--
Packaging:	Bulk
Part Status:	Active
Diode Type:	Standard, Reverse Polarity
Voltage - DC Reverse (Vr) (Max):	1600V
Current - Average Rectified (Io):	400A
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 400A
Speed:	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr:	10µA @ 50V
Capacitance @ Vr, F:	--
Mounting Type:	Chassis, Stud Mount
Package / Case:	DO-205AB, DO-9, Stud
Supplier Device Package:	DO-205AB, DO-9
Operating Temperature - Junction:	-60°C ~ 200°C

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The S400YR RS-485 bus voltage protectors are one type of diode rectifier. This diode is used to protect sensitive diode circuits from high voltage, particularly where interference protection is concerned. The diode is widely used in industrial automation, transportation, building and home automation applications.The S400YR is a single-phase, full-wave precision Bridge rectifier. It is a single 1-amp device with an isolation rating up to 600V RMS. This diode provides protection from low-voltage transients up to 600V on its common bus. The diode has a very low forward voltage drop and a very low reverse voltage rating of only 0.2V, making it ideal for applications where the power consumption needs to be kept low.The S400YR is designed with a voltage clamping feature that prevents the common bus voltage from exceeding a certain predefined value. This feature prevents any interference with the data transfer rate of the bus, which is essential in applications such as RS-485.The diode has a very low on-state voltage of only 0.3V, which provides a large voltage margin when compared to other diode rectifiers. This feature increases the diode\'s overall efficiency, resulting in less power consumption and a greater degree of protection.The working principle of the S400YR is quite simple. When the common bus voltage exceeds the predefined level, the diode starts to conduct, shunt the excess voltage to a safe level and clamping it there. This clamped voltage is then maintained, preventing any further voltage spikes or transients from damaging the sensitive electronic equipment.In conclusion, the S400YR is a ideal diode rectifier for protecting sensitive electronic devices from high voltage transients and interference. Its low forward voltage drop and reverse voltage rating, together with its voltage clamping feature make it an ideal choice for an array of applications, such as in building and home automation and industrial automation.

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