BZX84C24T-7-F

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	24V
Tolerance:	±6%
Power - Max:	150mW
Impedance (Max) (Zzt):	70 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 16.8V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOT-523
Supplier Device Package:	SOT-523
Base Part Number:	BZX84C24

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Introduction

The BZX84C24T-7-F is a single Zener diode that is used to establish relatively constant voltage levels in circuit systems. The diode exhibits low forward voltage drop, good temperature stability and a low reverse current. The diode allows current to flow in the forward direction, like an ordinary diode, but it can also allow current to flow in the reverse direction, for a specific purpose.

Application Field

BZX84C24T-7-F diodes are widely used in voltage regulation and in clamping applications. In a voltage regulation circuit, a Zener is used to prevent the voltage across a circuit from increasing beyond a certain value. This is done by allowing excess current to flow through the diode in the reverse direction which limits the voltage. The reverse current of the diode is typically very low, which keeps the voltage across the circuit low. This helps protect sensitive electronics from energy spikes or voltages that are too high.In a clamping application, the diode is used to clamp a circuit\'s voltage to a certain level. This is done by allowing additional current to flow through the diode in the reverse direction when the voltage across the diode begins to increase above the reverse breakdown voltage. This clamps the voltage level to the value established by the forward voltage rating of the diode. This helps protect circuit components from energy spikes or voltages that are too high.

Working Principle

The reason a Zener diode works differently than an ordinary diode is because of the doping of the junction between the P and N type regions. This junction is made to have a high doping so that it is depleted of free electrons and holes and an abrupt varying electric field is created. In reverse bias mode, a very small voltage applied to the diode results in a large electric field across the junction. As voltage increases, more and more current flows into the device as the reverse breakdown voltage is reached. This breakdown voltage is around 5 volts and any voltage above this will cause current to flow through the diode in the reverse direction. Due to the extremely high electric field the depletion region between the P and N type regions becomes very thin, and current will easily pass across it in the reverse direction. The total current that passes through the diode is due to a combination of the reverse breakdown current plus the reverse bias current. This current is regulated by the amount of voltage applied to the diode and by its breakdown voltage.

Conclusion

The BZX84C24T-7-F diode is a single Zener diode that is widely used in voltage regulation and clamping applications. When in reverse bias mode, the diode will allow current to flow through it and regulate the voltage based on its breakdown voltage. This helps protect sensitive electronics, preventing them from damage due to energy spikes or voltages that are too high.

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