MBR460MFST1G Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Schottky
Voltage - DC Reverse (Vr) (Max):	60V
Current - Average Rectified (Io):	4A
Voltage - Forward (Vf) (Max) @ If:	740mV @ 4A
Speed:	Fast Recovery = 200mA (Io)
Current - Reverse Leakage @ Vr:	200µA @ 60V
Capacitance @ Vr, F:	--
Mounting Type:	Surface Mount
Package / Case:	8-PowerTDFN, 5 Leads
Supplier Device Package:	5-DFN (5x6) (8-SOFL)
Operating Temperature - Junction:	-55°C ~ 175°C

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Introduction to MBR460MFST1G

MBR460MFST1G is a single diode rectifier manufactured by ON Semiconductor and is often used in power supply applications as rectifier or freewheeling diode. This type of rectifier has a junction capacitance of 10 pF, a peak repetitive reverse voltage of 600 V, and a maximum repetitive reverse current of 4 amp.

Application Field

The MBR460MFST1G diode rectifier is often used in a variety of power supply applications. It is utilized in applications where the need for power supply protection exists, such as providing protection against inverted DC power supply when using AC input. The diode rectifier can also be used for a sense circuit in an AC-DC converter or for a reverse polarity protection application.

Advantages

The MBR460MFST1G diode rectifier offers several advantages when compared to other diode alternates. It has a low junction capacitance for a faster response time, as well as a high reverse voltage rating of 600 Volts for increased protection. It is also able to withstand up to 4Amps of current, making it suitable for higher current applications. Additionally, its low threshold voltage of 0.67V eliminates the need for an external pre-charge resistor in applications such as a DC-DC step-down converter.

Working Principle

The working principle of an MBR460MFST1G diode rectifier is the same as any other diode rectifier. In a simple circuit, when a positive voltage is applied to the anode of the diode, it allows current to flow. The current is limited by the forward voltage drop of the diode, as shown in the image below.In a more complex DC-DC power supply circuit, the MBR460MFST1G diode rectifier is used to protect the output from the effects of an accidental reverse polarity. In this application, the diode rectifier is placed in a series between the input of the DC-DC converter and the output load, as shown in the image below.When the input power is applied backwards, the diode rectifier prevents the reverse flow of current and thus protects the output from accidental reverse polarity or overvoltage damage.

Conclusion

The MBR460MFST1G diode rectifier is an ideal solution for providing semiconductor reverse polarity protection and free-wheeling diode applications when high power is a requirement. Its low junction capacitance offers fast response time, and its high reverse voltage rating ensures maximum protection. Its low threshold voltage eliminates the need for additional external pre-charge resistor components, saving both time and money in the design process.

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