SMBJ4737CE3/TR13

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The SMBJ4737CE3/TR13 diode is a single Zener diode, classified as high power and having a power dissipation rating of 3.5 Watts. It has low capacitance and reverse-recovery times, making it a popular choice for applications requiring high speed switching. The SMBJ4737CE3/TR13 is a low voltage, high speed Zener diode with a forward voltage of 6.2V and an operating current of 350mA. It has a maximum reverse leakage current of 0.17uA and a junction temperature range of -55°C to 125°C.

The SMBJ4737CE3/TR13 is typically used in various electronic circuits such as voltage regulators, voltage multipliers, over-voltage protection and transient voltage suppression. The high power ratings of the diode make it suitable for high power applications such as power supplies and motor controls. The low capacitance of the diode allows it to be used in high speed switching applications such as signal transmission.

The SMBJ4737CE3/TR13 diode works on the principle of Zener-breakdown voltage. When the diode is forward biased, the majority of current is carried by the majority-carrier electrons and minority-carrier holes. When the voltage reaches the Zener break-down voltage, a large number of majority-carrier electrons become trapped in the depletion layer, which causes a large reverse current to flow. This breakdown voltage is relatively constant and is determined by the doping concentrations of the junction. The breakdown voltage of the diode is typically between 6 to 15 volts.

The Zener diode has a low reverse and forward resistance, which allows current to flow easily in either direction. When the diode is reverse biased, there is no current flowing as the strong electric field in the depletion layer prevents the majority charge carriers from crossing the junction. When the reverse voltage of the diode is increased beyond the Zener breakdown voltage, the trapped majority charge carriers in the depletion zone become released and a large amount of current is allowed to flow, keeping the reverse voltage substantially constant.

The SMBJ4737CE3/TR13 diode is a useful component for various applications. It can be used for over-voltage protection and as a voltage reference in power supplies and motor control circuits. It can also be used in energy saving circuits and high voltage AC-DC converters. Its low capacitance allows the diode to be used in high speed switching applications like signal transmission.

The SMBJ4737CE3/TR13 is a reliable and cost-effective diode that is suitable for a wide range of applications. It is a popular choice for over-voltage protection, transient voltage suppression and high-speed switching applications. Its low capacitance and reverse recovery times make it well-suited for applications that require ultra-high speed switching.

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