| Allicdata Part #: | 1086-18073-ND |
| Manufacturer Part#: |
JAN1N4491CUS |
| Price: | $ 17.05 |
| Product Category: | Discrete Semiconductor Products |
| Manufacturer: | Microsemi Corporation |
| Short Description: | DIODE ZENER 120V 1.5W D-5A |
| More Detail: | Zener Diode 120V 1.5W ±2% Surface Mount D-5A |
| DataSheet: |  JAN1N4491CUS Datasheet/PDF |
| Quantity: | 1000 |
| 100 +: | $ 15.33910 |
Specifications
| Series: | Military, MIL-PRF-19500/406 |
| Packaging: | Bulk |
| Part Status: | Active |
| Voltage - Zener (Nom) (Vz): | 120V |
| Tolerance: | ±2% |
| Power - Max: | 1.5W |
| Impedance (Max) (Zzt): | 400 Ohms |
| Current - Reverse Leakage @ Vr: | 250nA @ 96V |
| Voltage - Forward (Vf) (Max) @ If: | 1V @ 200mA |
| Operating Temperature: | -65°C ~ 175°C |
| Mounting Type: | Surface Mount |
| Package / Case: | SQ-MELF, A |
| Supplier Device Package: | D-5A |
Description
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The JAN1N4491CUS form part of a family of diodes known as Zener Single, and are used in various circuits and applications in order to do the job of protecting any under and overvoltages by diverting and regulating those voltages. In this article, we shall discuss the application field and principles of operation of the JAN1N4491CUS.
Application Field
JAN1N4491CUS diodes have a wide range of applications in general industry, as well as military and aerospace applications. They are most commonly used as voltage regulators and spike protectors due to their superior performance and power handling capabilities. In particular, these diodes are used extensively in aircraft and satellites, where reliable performance and precise voltage regulation is of utmost importance.The JAN1N4491CUS has a maximum reverse breakdown of 5V and a total power dissipation of 500mW, making it suitable for applications requiring higher voltage and power regulation capabilities. These diodes can also be used to protect sensitive components such as radio receivers, digital cameras, and certain medical devices.Working Principle
The JAN1N4491CUS is a two-terminal leaded Zener diode that functions on the principle of Zener breakdown. A Zener diode is a two-terminal device with a reverse breakdown voltage that allows current to flow through it in the reverse direction when the voltage across it reaches a certain breakdown value.In practical terms, this means that the JAN1N4491CUS is designed to provide precise voltage regulation when connected in reverse bias across a load. It does this by cutting off any excess or unwanted voltages beyond the reverse breakdown voltage of the diode, thereby ensuring that the load receives only the precise and regulated voltage it requires.In order to further understand this process, it is important to note that the JAN1N4491CUS is designed to allow a certain amount of current to pass through it in the reverse direction when the voltage across it reaches the reverse breakdown voltage. This is done by creating an internal junction between the two leads of the diode, and it is this junction that enables current to flow in reverse.Conclusion
In conclusion, the JAN1N4491CUS belongs to the family of Zener single diodes and is used in a wide array of applications wherein the precise regulation of voltages is of great importance. It works on the principle of Zener breakdown which allows a limited current to pass through the diode in the reverse direction when the reverse breakdown voltage is reached. Thus, this diode can provide excellent protection of sensitive components from under and overvoltages.The specific data is subject to PDF, and the above content is for reference
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