SML4763HE3/5A

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	91V
Tolerance:	±10%
Power - Max:	1W
Impedance (Max) (Zzt):	250 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 69.2V
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (SMA)

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Diodes - Zener - Single

The SML4763HE3/5A diode is one of the most widely used type of Zener diodes currently on the market. Zener diodes are a specialized type of diode designed to allow current to flow in one direction while also resisting reverse current flow. This special type of diode is often used in various applications, including power supplies, motor control circuits, and various other applications where high precision current flow is required.The SML4763HE3/5A diode is a dual-stranded, axial-leaded device with an anode lead for connecting to the positive voltage and a cathode lead for connecting to the negative voltage. This diode has a series of closely spaced stripes on its body, which act as anode and cathode electrodes. When the anode lead is connected to a positive voltage source, current will flow in a forward direction, and when the cathode lead is connected to a negative voltage source, current will flow in a reverse direction.The SML4763HE3/5A diode has a few main applications. One common application is as a voltage regulator in power supplies. In this application, the Zener diode protects the power supply from over-voltages and can control the voltage across the load. The Zener diode also prevents sudden voltage drops due to current surges by dissipating this energy as heat. This can be especially useful for applications such as motor control circuits, where sudden drops in voltage can cause severe damage.Another common application of the SML4763HE3/5A diode is in signal conditioning circuits. In this application, the Zener diode is used to limit the maximum voltage level and prevent signal overdriving, which can potentially damage the circuit. The Zener diode also serves to protect the circuit components from transients, as well as reduce noise and prevent spikes.The working principle of the SML4763HE3/5A diode is based on the fact that diodes allow current to flow in only one direction. Normally, current can flow in both directions through a circuit, but when the SML4763HE3/5A diode is connected in a circuit, the diode will allow current to flow in only the forward direction, while the reverse current will be blocked.The SML4763HE3/5A diode is composed of two layers of semiconductor material, separated by a junction. When a positive voltage is applied to the anode, the positive charge attracts negative charge to the junction. This creates an electric field between the two layers, known as the built-in field. This field helps to control the flow of current, allowing current to flow only in the forward direction while blocking reverse current.In addition to the built-in electric field, the SML4763HE3/5A diode also utilizes the Zener effect. The Zener effect is a phenomenon in which the junction between two layers of semiconductor material breaks down at certain voltages, allowing current to flow in both directions. The SML4763HE3/5A diode is designed to break down at a certain voltage, usually around 5.6 volts. This allows the diode to dissipate the excess voltage in the circuit as heat, while allowing current to flow in the forward direction.The SML4763HE3/5A diode is a versatile device that can be used in a wide variety of applications, from signal conditioning circuits to power supplies. Additionally, this diode is able to resist reverse current flow, dissipate energy as heat, and provide voltage regulation for applications where high precision current flow is required.

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