| Allicdata Part #: | 1N4957-ND |
| Manufacturer Part#: |
1N4957 |
| Price: | $ 4.76 |
| Product Category: | Discrete Semiconductor Products |
| Manufacturer: | Microsemi Corporation |
| Short Description: | DIODE ZENER 9.1V 5W AXIAL |
| More Detail: | Zener Diode 9.1V 5W ±5% Through Hole |
| DataSheet: |  1N4957 Datasheet/PDF |
| Quantity: | 1000 |
| 143 +: | $ 4.28321 |
Specifications
| Series: | -- |
| Packaging: | Bulk |
| Part Status: | Active |
| Voltage - Zener (Nom) (Vz): | 9.1V |
| Tolerance: | ±5% |
| Power - Max: | 5W |
| Impedance (Max) (Zzt): | 2 Ohms |
| Current - Reverse Leakage @ Vr: | 25µA @ 6.9V |
| Voltage - Forward (Vf) (Max) @ If: | 1.5V @ 1A |
| Operating Temperature: | -65°C ~ 175°C |
| Mounting Type: | Through Hole |
| Package / Case: | E, Axial |
| Base Part Number: | 1N4957 |
Description
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| 1N4957 Application Field and Working Principle |
|---|
| 1N4957 is an electronic component that falls under the category of diodes - zener - single. It is typically used as an overvoltage protection device in appliances and equipment that work with high voltage circuits. Its purpose is to regulate and limit the current that passes through the circuit, ensuring that it remains within the safe operating range. This article will discuss the application field and working principle of 1N4957.1N4957 can be used in various types of high voltage circuits, including AC/DC power supplies, batteries, relays, and motor controllers. In these applications, the 1N4957 is connected across the power terminals and then serves as a voltage regulator. With its built-in current limiting capability, the 1N4957 is able to protect the components of the circuit against any overvoltage conditions by clamping the voltage at a safe level.The working principle of 1N4957 is based on the principle of reverse-biased zener diodes. Zener diodes are a special type of diode that are designed to create a voltage-dependent electrical break or resistance within a circuit. When the input voltage exceeds the breakdown voltage of the zener diode, it will become “reverse biased” by the voltage and will start to conduct current. This current is then “clamped” or limited, allowing only a safe amount of current to flow through the circuit.The 1N4957 is a reverse-biased zener diode with an avalanche breakdown voltage of 9.5 volts. This means that when the input voltage exceeds the breakdown voltage, the diode will start to conduct current and act as a regulating device. The 1N4957 has an additional design concept which provides an extra measure of protection against damage caused by high surge voltages. Its built-in current limiting capability ensures that only a safe amount of current will pass through the circuit.To sum up, 1N4957 is an electronic component that falls under the category of diodes - zener - single. It is typically used as an overvoltage protection device in high voltage circuits, allowing it to regulate and limit the current that passes through the circuit. Its working principle is based on the principle of reverse-biased zener diodes, which become “reverse biased” by the voltage and start to conduct current when the input voltage exceeds the breakdown voltage. With its built-in current limiting capability, the 1N4957 is able to provide an extra measure of protection against damage caused by high surge voltages. |
The specific data is subject to PDF, and the above content is for reference
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