NSB8GTHE3/81

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	400V
Current - Average Rectified (Io):	8A
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 8A
Speed:	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr:	10µA @ 400V
Capacitance @ Vr, F:	55pF @ 4V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Supplier Device Package:	TO-263AB
Operating Temperature - Junction:	-55°C ~ 150°C

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Introduction

NSB8GTHE3/81, classified under the category of diodes-rectifiers-single, is a highly efficient, single-phase silicon diode designed for applications in power or stability rectification. It is convenient for use in areas that require space saving, such as cell phone chargers and laptop power adaptors. Its rectifying performance and efficient surge capability helps to achieve excellent stability.

Features

The NSB8GTHE3/81 provides a number of features to enhance its usage in applications. The following are some of its noteworthy features:

• Very low forward voltage drop: The forward voltage drop across the diode is much lower than that of standard rectifier diodes, helping to increase efficiency and maximize the power conversion ratio.
• High surge capability: The diode is designed to handle up to 30A of peak forward current at a junction temperature of 40°C and 15A at a junction temperature of 85°C.
• Small surface area: The small surface area makes it easy to mount the diode even in confined spaces.

Application Field and Working Principle

The main application of the NSB8GTE3/81 is in power rectification. In a rectification circuit, the diode is placed in series with the AC voltage source and is used to convert alternating current (AC) to direct current (DC). When the applied AC voltage is positive (positive half-cycle), the diode allows current to flow, thereby acting as a closed switch. During the negative half-cycle, the diode becomes reverse-biased, blocking the current, thus acting as an open switch. This repeated alternating ON and OFF of the diode helps to produce the desired DC output. The diode can also be used for protection from transient surges in power circuits by connecting a capacitor and gas discharge tube in parallel with it in the rectification circuit. This capacitor smoothens any transient pulses and provides additional protection, while the gas discharge tube further regulates and filters the output.

Conclusion

The NSB8GTH3/81 diode is a highly efficient and powerful device designed for applications that require space-saving. Its low forward voltage and high surge capabilities, along with its ability to convert AC to DC, make it an ideal choice for rectification circuits. Moreover, its small surface area makes it suitable for even the most confined spaces. Therefore, the NSB8GTHE3/81 diode, classified under the category of diodes-rectifiers-single, is an ideal selection for applications requiring power of stability rectification in small spaces.

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