BZX84W-C18X

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±5%
Power - Max:	40W
Impedance (Max) (Zzt):	45 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 12.6V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	SC-70, SOT-323
Supplier Device Package:	SC-70

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Overview of BZX84W-C18X

The BZX84W-C18X is a Zener diode, also known as a voltage regulator diode. It is a single diode available in a SOD-323 case with cathode and anode terminals, and a maximum power dissipation rating of 350 mW. This diode has a wide range of applications since it has a variety of voltage ratings.

Application Fields of BZX84W-C18X

The BZX84W-C18X can be used in a variety of application fields, the most common being:

• Power Supplies: The BZX84W-C18X can be used to regulate power supply voltage in power supply design. This diode can be used in association with a capacitor and a resistor to form a Low Dropout (LDO) voltage regulator circuit.
• Electrical Equipment: The BZX84W-C18X can also be used in a wide range of electrical equipment, such as TVs, VCRs, computers, and other appliances that have a voltage rating that the Zener diode regulates.
• Surge Protection: When there is a sudden increase in voltage levels, due to a power surge or an induction transient, the BZX84W-C18X can limit this voltage rise and protect the electrical equipment’s circuits from damage.
• High Voltage Protection: The BZX84W-C18X can also be used to protect against dangerously high voltage levels by clamping the voltage around a Zener reference voltage.

Working Principle of BZX84W-C18X

The BZX84W-C18X is a Zener diode, which operates in reverse breakdown. This means that the diode will allow a large current flow when the forward voltage (VF) exceeds the Zener reference voltage (VZ). This current will create a power dissipation across the diode.The Zener voltage level of the BZX84W-C18X is determined by the manufacturing process. This voltage level is known as the break down voltage or the Zener voltage, and is usually marked on the diode\'s data sheet. Once the reverse bias applied to the diode reaches this voltage level, the diode will conduct in both directions and the Zener voltage will remain constant.The BZX84W-C18X is designed to limit the input voltage to the Zener reference voltage and protect the electrical equipment against dangerously high voltage levels. The Zener voltage level is given by the Zener breakdown voltage, which is typically in the range of 3.2 V to 18 V. This enables the diode to be used in a variety of application fields, from power supplies to surge protection.

Conclusion

The BZX84W-C18X is a single diode that is available in a SOD-323 case. It is a Zener diode, also known as a voltage regulator diode, which is used in a variety of application fields, from power supplies to surge protection. The Zener voltage level of the BZX84W-C18X is determined by the manufacturing process, and it is usually in the range of 3.2 V to 18 V. This diode can protect the electrical equipment\'s circuits from damage due to a sudden increase in voltage levels, such as a power surge or an induction transient.

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