SMAJ4751E3/TR13

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Diodes form the basis of many common electrical components and allow for the flow of electrical current. A Zener diode is a form of diode specifically designed to be used in reverse bias, meaning that it will prevent any current from flowing in the intended direction until a certain voltage threshold is reached. The SMAJ4751E3/TR13 is a single Zener diode specifically tailored for use in a wide range of applications.

Application Field

The SMAJ4751E3/TR13 is a 3.6 volt Zener diode housed in a SMA surface mount package. This diode can be used in a variety of electrical and electronic circuits, including but not limited to those requiring reverse voltage protection, voltage reference, and overvoltage protection. In particular, the SMAJ4751E3/TR13 is usually employed for the protection of low voltage devices such as computer chips, transistors, and integrated circuits. Additionally, Zener diodes like this are sometimes used as voltage references and in temperature measurement applications.

Working Principle

The SMAJ4751E3/TR13 is an example of a single Zener diode. A single Zener diode will operate as a two-terminal device, meaning that there are two leads, or terminals, that the electrical current flows through. When the voltage across the two terminals reaches a certain threshold, usually referred to as the Zener voltage (Vz in this case), the Zener diode will begin conducting current in the reverse direction, allowing electrons to flow from the anode (negative terminal) to the cathode (positive terminal). This reverse current regulation is the basis of the diode’s operation. The SMAJ4751E3/TR13 will begin conducting when the voltage across the two terminals reaches 3.6 volts.

An important point to note about Zener diodes is that the Zener voltage is temperature and power dependent. This means that the Zener voltage will change depending on the temperature and the amount of current flowing through it. The SMAJ4751E3/TR13’s Zener voltage is specified to be within ±10 mV of the nominal voltage at 25℃ while operating at an ambient temperature of -55℃ to +125℃, 50 mW maximum power, and forward current of between 0.2 and 5.0 mA. The diode’s voltage stability is rated to be within ±2 mV/℃ between -40℃ and +85℃.

Conclusion

In conclusion, the SMAJ4751E3/TR13 is a single Zener diode designed for use in a wide variety of applications, including reverse voltage protection, voltage reference, and overvoltage protection. The diode’s Zener voltage remains stable over a wide range of temperatures and powers, allowing for its use in both low power and extreme temperature applications. Single Zener diodes are invaluable components due to their simplicity, stability, and versatility.

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