BZD17C120P-E3-18

A Zener diode is a type of semiconductor that behaves differently from other diodes. When the voltage applied across a Zener diode reaches a certain level, the diode will start to conduct current in reverse direction and thus will act as a voltage regulator. BZD17C120P-E3-18 is a general-purpose single Zener diode with a breakdown voltage of 18V. It is used as a voltage regulator and in a variety of other applications.

Application fields of BZD17C120P-E3-18
BZD17C120P-E3-18 is capable of handling currents up to 125 mA and voltages up to 18V. Due to its voltage and current ratings, it is suitable for a number of electronic applications. Some of these applications include:

• Circuit protection - BZD17C120P-E3-18 can be used to protect a circuit from overvoltage events. It can be used in combination with other diodes to regulate the maximum voltage applied across a circuit.
• Voltage regulation – BZD17C120P-E3-18 can be used to regulate the voltage across a circuit by clamping the voltage above its breakdown voltage.
• Power supply circuits – BZD17C120P-E3-18 can be used to limit the output voltage of a power supply circuit.
• Clamping circuits – BZD17C120P-E3-18 can be used in combination with other components to form a clamping circuit which prevents a circuit from exceeding a particular threshold voltage.
• Radio reception – BZD17C120P-E3-18 can be used to isolate and separate audio signals in radio receivers.

Working principle of BZD17C120P-E3-18
Unlike other diodes, a Zener diode behaves differently when a voltage is applied across it. When the applied voltage is below the breakdown voltage of the diode (18V in case of BZD17C120P-E3-18), the diode does not conduct current. However, when the applied voltage reaches the breakdown voltage, the diode will begin to conduct current in reverse from the cathode to the anode and thus the voltage is limited to the Zener voltage. This behavior of limiting the voltage to a particular level makes the Zener diode suitable for applications like voltage regulation, power supply circuits and circuit protection.

BZD17C120P-E3-18 is a single Zener diode with a reverse breakdown voltage of 18V and a maximum current rating of 125 mA. It is used for a variety of applications, including circuit protection, voltage regulation, power supply circuits, clamping circuits and radio reception.