S1GHR3G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	400V
Current - Average Rectified (Io):	1A
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 1A
Speed:	Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr):	1.5µs
Current - Reverse Leakage @ Vr:	1µA @ 400V
Capacitance @ Vr, F:	12pF @ 4V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (SMA)
Operating Temperature - Junction:	-55°C ~ 175°C

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Introduction

S1GHR3G diode rectifier is a single diode bridge with a thermally matched, heavy duty ceramic and plastic package. It is designed for AC to DC rectifier and voltage doubler applications in especially harsh environment. The S1GHR3G is suitable for use in harsh industrial and military environments. It is ideal for applications requiring high junction temperature operation and high temperature cycling.

Features

The S1GHR3G diode rectifier has the following features:• High temperature operation and high temperature cycling - Up to 125°C (257°F) junction temperature• High reliability - Low line voltage drops and high reverse recovery time• High surge current capability - High surge current capability up to 200A• Low profile package - SMT type package allows low profile PCB designs• Low noise - Low diode noise• Rugged construction - Heavy duty high temperature ceramic and plastic package

Applications

The S1GHR3G diode rectifier is suitable for use in the following applications:• AC to DC rectifiers• Voltage doubler applications• UPS systems• DC to DC converters• High speed switching• Industrial and military applications• Automotive systems

Working Principle

The operation of a single diode bridge rectifier consists of four semiconductor diodes connected to form a bridge. The diodes are connected in a way such that installing a single diode between each pair of points allows passing of both AC half cycles. This bridge is used to convert alternating current into direct current. In a single diode bridge rectifier, when the input AC voltage is applied, each diode will conduct on alternate half cycles. In the first half cycle of the AC input, diodes D1 and D3 will be in forward bias and hence will conduct. The current flows through the external load RL and returns to the AC source through the diodes D2 and D4. Similarly, during the second half cycle of the AC input, the diodes D2 and D4 will conduct, and the current will flow through the load RL and returns to the AC source through the diodes D1 and D3. Thus, in both cycles, the current from AC source is passed through the external load RL and both the waveforms of the output voltage will be in the same direction. The input AC voltage waveform appears inverted of the output voltage waveform, as it is shifted by 180°. The current waveform has the same shape and is shifted by 90°. The diodes in a single diode bridge rectifier allow only the one-way flow of current, resulting in a unidirectional output voltage.

Conclusion

The S1GHR3G diode rectifier is a single diode bridge well-suited for DC to DC converter applications in harsh environments. With features such as high temperature operation and high surge current capability, the S1GHR3G diode rectifier is an ideal choice for applications requiring reliable and robust performance. The single diode bridge rectifier works by passing alternating current through the load during alternate half cycles and the resulting output voltage is unidirectional.

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