2EZ27D5E3/TR12

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	27V
Tolerance:	±5%
Power - Max:	2W
Impedance (Max) (Zzt):	18 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 20.6V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-204AL (DO-41)
Base Part Number:	2EZ27

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The 2EZ27D5E3/TR12 diode is a single Zener diode designed for use as a voltage regulator in a variety of applications. This diode provides a stable voltage reference, allowing a circuit to be supplied with a constant voltage regardless of variations in the input voltage. The diode can also be used in reverse bias to limit the voltage applied to a circuit. The 2EZ27D5E3/TR12 is a 4.7 V single Zener diode, with a maximum reverse breakdown voltage of 5.3 V, a dissipation capacity of 250 mW and a tolerance of ±5%. The diode is housed in a DO-213AB package for through-hole mounting.

Working Principle

Zener diodes work by passing current in the forward direction, but with a reverse breakdown voltage, when a voltage greater than the breakdown voltage is applied to them, they divert a portion of the current around the circuit. This diverted current appears as a drop in the voltage across the diode. The breakdown voltage of a Zener diode is lower than the reverse breakdown voltage of a normal rectifier diode, so that the voltage applied to the circuit is limited to the Zener voltage. When a Zener diode is connected in a circuit, current flows in the forward direction until the reverse breakdown voltage is reached. At this point, the diode breaks down and allows a portion of the current to flow in the reverse direction, as shown in the diagram below. This reverse current reduces the voltage across the diode, bringing it to the breakdown voltage, or Zener voltage.The actual operation of a Zener diode depends on the type of load connected to it. If the load is a resistive load, such as a light bulb, the current will increase when the voltage across the diode reaches the breakdown voltage, as shown in the diagram. If the load is a capacitive load, such as an inverter, the current will decrease when the voltage across the diode reaches the breakdown voltage. Zener diodes can be used in circuits to regulate the voltage supplied to the load. When the output voltage is below the breakdown voltage, the diode will remain in the forward direction, allowing the output voltage to remain constant. However, when the output voltage rises above the breakdown voltage, the diode will conduct in the reverse direction, reducing the output voltage to the breakdown voltage.

Applications

The 2EZ27D5E3/TR12 diode is widely used in a variety of applications, such as voltage regulation, over-voltage protection and current limiting. It can also be used in battery charging circuits and switching power supplies to provide a stable voltage reference. In voltage regulation applications, the diode can be used to regulate the output voltage of a power supply, providing a steady voltage even when the input voltage varies. This is especially useful in power supplies that are subject to significant fluctuations in input voltage. The diode can also be used in over-voltage protection applications. When the output voltage rises above the breakdown voltage of the diode, the diode will begin to conduct in the reverse direction, limiting the voltage applied to the circuit. This can help protect sensitive components from damage due to excessive voltages. The diode can also be used in current limiting applications. When the current flowing through the diode reaches the breakdown voltage, the diode will begin to conduct in the reverse direction, limiting the current flowing through the circuit. This can help protect components from damage due to excessive currents. The 2EZ27D5E3/TR12 diode is a versatile device that can be used in a variety of applications. With its wide range of applications, the diode is an ideal choice for designers looking for a reliable voltage regulator or current limiter.

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