SMBJ5338BE3/TR13

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The SMBJ5338BE3/TR13 is a single Zener diode, meaning it is composed of a single PN junction, thus allowing it to be used as an unidirectional device or as a bi-directional device. It is designed to be used as a voltage regulator, clamping device, or as a transient voltage suppressor. The most common applications of this particular device include audio and video clippers, ESD protection, protection against overvoltage, and protection against high-speed pulse transients.

The SMBJ5338BE3/TR13 is a silicon epitaxial Zener diode, meaning it is constructed from silicon deposits. This provides benefits such as improved performance and reliability, and excellent power dissipation characteristics. The voltage range for the SMBJ5338BE3/TR13 is 5.0 to 33 volts with a dissipation power of 500 mW, making it a medium power Zener diode.

The maximum reverse current for this device is 100μA at 5.0 volts, 6.0μA at 10 volts and 1.0μA at 33 volts, making it capable of accurately regulating voltages over the range specified. The leakage current at 33 volts is 0.2mA, making it suitable for many applications. The breakover voltage is also within specification, ranging from 5.2V-31.2V. The capacitance is 2.5pF at 25°C. The Zener Impedance is 4.5 Ohms at 4V, and the junction capacitance is 250pF max.

The SMBJ5338BE3/TR13 works by utilizing a reverse-biased PN junction. When the applied voltage to the cathode is higher than the anode voltage, the PN junction remains perfectly closed and no current passes through it. When the anode voltage rises above the applied voltage of the cathode, the junction begins to break down, causing an avalanche breakdown, which results in a sudden flow of current from cathode to anode.

The SMBJ5338BE3/TR13 is a very useful device in applications which require a large voltage range, such as audio and video clippers, overvoltage protection and transient voltage suppression. It has high voltage breakdowns, low leakage currents and excellent power dissipation capabilities. The SMBJ5338BE3/TR13 is an ideal choice for applications which require voltage regulation, clamping, or transient voltage suppressor protection.

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