SMZJ3796AHE3/52

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±10%
Power - Max:	1.5W
Impedance (Max) (Zzt):	14 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 15.2V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-214AA, SMB
Supplier Device Package:	DO-214AA (SMBJ)
Base Part Number:	SMZJ3796

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The SMZJ3796AHE3/52 diodes are single Zener diodes in a small package. They can be used for voltage regulation, voltage clamping, and waveform shaping applications.The SMZJ3796AHE3/52 diodes are known as Zener diodes because of their ability to regulate voltage by preventing excess voltage from being applied. Zener diodes are usually covered in the lectures in university courses on circuits, as they are versatile and have many practical applications.In a typical voltage regulation application, the SMZJ3796AHE3/52 diodes are connected between the source voltage and the load in the circuit in such a way that the diode will conduct current only when the source voltage is higher than the Zener voltage. This forces the output voltage to remain within the limits set by the Zener voltage.In a voltage clamping application, the Zener diode is connected between the input and the output in the circuit in such a way that it will only conduct current when the voltage spike (due to sudden input current variations) exceeds a certain value. This keeps the output voltage within a certain range and prevents a large voltage spike from occurring.Finally, in waveform shaping applications, the SMZJ3796AHE3/52 diodes are used to limit the maximum and minimum voltage swing of an output waveform, as well as to shape the rising and falling edges of the waveform.Working principleThe SMZJ3796AHE3/52 diodes work by creating a reverse breakdown region in their junction. This reverse breakdown region occurs when the voltage, as applied across the diode, exceeds the reverse breakdown voltage, which is also known as the Zener voltage. This causes a rapid decrease in the diode\'s resistance, allowing current to flow in the reverse direction. Thus, the Zener voltage acts as a voltage regulator, preventing excess voltage from being applied across the diode.The breakdown voltage of the SMZJ3796AHE3/52 diodes can be adjusted by varying the doping concentration of the diode. This allows the designer to select the exact breakdown voltage that is needed for their application.The reverse breakdown region of the diode is also known as the Zener breakdown region, or Zener region. The Zener breakdown region is a non-linear region in which the diode\'s voltage/current characteristics are no longer I-V linear but instead become P-I-V non-linear.In the Zener breakdown region, the diode\'s resistance is low, typically around 50-100 ohms. This allows current to be regulated within the limits set by the Zener voltage and makes them useful for applications such as voltage regulation, voltage clamping, and waveform shaping.The SMZJ3796AHE3/52 diodes also have an avalanche breakdown region, which occurs when the voltage across the diode becomes too high. The avalanche breakdown region is much higher than the Zener breakdown region, typically around 15-20V. In the avalanche breakdown region, the diode\'s resistance is very low, typically around 500ohm.ConclusionThe SMZJ3796AHE3/52 diodes are single Zener diodes in a small package. They can be used for voltage regulation, voltage clamping, and waveform shaping applications. They work by creating a reverse breakdown region in their junction, which is known as the Zener breakdown region. The resistance in the Zener breakdown region is very low and allows current to be regulated within the limits set by the Zener voltage. The SMZJ3796AHE3/52 diodes also have an avalanche breakdown region, which is much higher than the Zener breakdown region and allows current to flow in the reverse direction, making them useful for clamping applications.

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