1SMB5939HR5G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	39V
Tolerance:	±5%
Power - Max:	3W
Impedance (Max) (Zzt):	45 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 29.7V
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AA, SMB
Supplier Device Package:	DO-214AA (SMB)

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A 1SMB5939HR5G is a typical type of diode, more specificly a Zener diode, which is designed to operate across a wide range of temperatures. It is a single diode, which basically means that it has only one junction, or two operating points. The 1SMB5939HR5G is a medium power device that uses Zener breakdown to regulate its working voltage.The 1SMB5939HR5G is ideal for regulating and protecting electronic circuits, either as part of the power supply or as a circuit-breaker. With its wide temperature range and its ability to withstand transient voltage spikes, it is capable of increasing the reliability of a circuit. The diode can also be used as a voltage reference in analog circuits, since its operating voltage will remain constant over a wide temperature range.The operating principle of the 1SMB5939HR5G is relatively simple. Zener breakdown occurs when the forward-bias current across the diode is increased to a point where the electric field of the depletion layer is strong enough to force electrons from the valence band of the semiconductor material into the conduction band. This increases the concentration of electrons in the conduction band and allows a current to flow. The Zener breakdown voltage is determined by the doping level of the semiconductor material.The 1SMB5939HR5G has a wide range of applications, ranging from power supplies, DC/DC converters, switched-mode power supplies and inverters to inductors, electromagnets and rectifier circuits. Its high surge capability and low reverse leakage current make it suitable for regulating the voltage across a wide range of DC loads. Furthermore, it can be used in applications that require AC to DC conversion, such as power supplies, switch-mode power supplies and rectifier circuits. Additionally, due to its wide operating temperature range, it can be used in harsh environments, such as automotive, industrial, and medical applications.In conclusion, the 1SMB5939HR5G is a reliable single Zener diode that offers high surge and reverse leakage currents, a wide operating temperature range, and a constant operating voltage over a wide temperature range. It is therefore ideal for use in a wide range of applications including power supplies, switch-mode power supplies, rectifier circuits, and inductors. Its simple operating principle and easy installation make it an ideal choice for regulating and protecting electronic circuits.

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