BZD27C4V3P-M3-18

Series:	Automotive, AEC-Q101, BZD27C-M
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	4.3V
Tolerance:	--
Power - Max:	800mW
Impedance (Max) (Zzt):	7 Ohms
Current - Reverse Leakage @ Vr:	25µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-219AB
Supplier Device Package:	DO-219AB (SMF)

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Diodes, such as the BZD27C4V3P-M3-18, are some of the most commonly used components in electrical and electronic engineering. They are used in a wide variety of applications, including switching, voltage regulation, safety circuits, and signal transduction. The particular BZD27C4V3P-M3-18 diode is a zener diode, a type of diode that is especially well-suited for use in applications that require voltage control and a high degree of stability. A zener diode is a heavily doped diode that, unlike other diodes, will break down in the reverse direction under specific circumstances, allowing a controllable current to flow "backwards" through the diode. This breakdown occurs at a precise voltage, called the "breakdown voltage" or "zener voltage." The precise breakdown voltage of a particular zener diode can be determined from its part number, in the case of the BZD27C4V3P-M3-18, the breakdown voltage is 4.3V.When the reverse voltage across the diode reaches the breakdown voltage, the current will begin to increase exponentially. This current can be controlled by adding a resistor in series with the diode, thus creating a "zener diode regulator." The resistor will limit the maximum current that can flow through the diode, thus preventing the diode from being damaged by excessive current.The BZD27C4V3P-M3-18 zener diode is most commonly used in applications that require precise voltage regulation and a high degree of stability. Its particular breakdown voltage makes it especially well-suited for use in applications that require a regulated voltage of 4.3V. For example, the BZD27C4V3P-M3-18 can be used in circuits that require regulated 4.3V, such as battery chargers, regulated power supplies, or electronic circuits. The diode can be used to provide a stable supply voltage, or to regulate the voltage of a battery as it is being charged. Additionally, the BZD27C4V3P-M3-18 can be used in safety circuits, such as in circuits that require a circuit to be automatically shut off if the voltage drops too low.In addition to providing a precise regulated voltage, the BZD27C4V3P-M3-18 also is used in applications that require protection from overvoltage. The diode will break down in the reverse direction when the reverse voltage across it reaches the breakdown voltage, allowing the current to flow in the reverse direction. This current can then be used to provide a "clamping" action, limiting the voltage on the circuit to the breakdown voltage of the diode. The BZD27C4V3P-M3-18 is a versatile and reliable component that is used in a variety of applications. Its precise breakdown voltage makes it especially useful for applications that require precise voltage regulation and a high degree of stability. It is also useful in a number of protection circuits, such as to provide overvoltage protection. It is a valuable component that greatly enhances the functionality of many electronic circuits.

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