| Allicdata Part #: | 1N5545B-ND |
| Manufacturer Part#: |
1N5545B |
| Price: | $ 2.22 |
| Product Category: | Discrete Semiconductor Products |
| Manufacturer: | Microsemi Corporation |
| Short Description: | DIODE ZENER 30V 500MW DO35 |
| More Detail: | Zener Diode 30V 500mW ±5% Through Hole DO-35 |
| DataSheet: |  1N5545B Datasheet/PDF |
| Quantity: | 1000 |
| 307 +: | $ 1.99476 |
Specifications
| Series: | -- |
| Packaging: | Bulk |
| Part Status: | Active |
| Voltage - Zener (Nom) (Vz): | 30V |
| Tolerance: | ±5% |
| Power - Max: | 500mW |
| Impedance (Max) (Zzt): | 112 Ohms |
| Current - Reverse Leakage @ Vr: | 10nA @ 27V |
| Voltage - Forward (Vf) (Max) @ If: | 1.1V @ 200mA |
| Operating Temperature: | -65°C ~ 175°C |
| Mounting Type: | Through Hole |
| Package / Case: | DO-204AH, DO-35, Axial |
| Supplier Device Package: | DO-35 |
Description
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The 1N5545B is a cost-effective and reliable diode in the Zener single category which is ideal to use in applications that require steady and stabilized voltage. Zener diodes are single-directional devices that allow substantial current in one direction with a much lower current flow in the opposite direction. It is rated at 45V and comes with a power rating of 500 mW, this diode is often used to maintain a steady voltage generated by power supplies, thus preventing undesired voltage spikes.
Basic Working Principle
At the heart of the 1N5545B is a highly stable zener structure with a reverse-biased voltage across it. This structure is encapsulated in an isolated package, which allows for high reliability and temperature stability. When a high reverse-biased voltage is encountered, the Zener structure enters into a breakdown mode that causes a large flow of current. This phenomenon is known as the Zener effect. With the 1N5545B, when a high reverse-biased voltage is encountered, the breakdown voltage is 45V, allowing for a stable and steady voltage of 45V.Applications
The 1N5545B Zener diode is predominantly used in applications that require stabilized and reliable voltage with a maximum allowable power rating. These applications typically involve power supplies, voltage regulators, and other such applications where a stable voltage needs to be regulated, maintained, and prevented from exceeding operational limits.In power supplies, the 1N5545B is typically used to maintain a steady voltage output and/or to prevent undesired voltage spikes that can damage sensitive components, such as integrated circuits. Voltage regulation is also attained by employing two cascaded 1N5545B Zener diodes. In this configuration, one Zener diode is connected in series with the unregulated input voltage and the other Zener diode is connected in the output of the circuit, thus regulating the voltage. The 1N5545B is also used in bias circuits to ensure a constant loading current for resistive elements, transistors, and other integrated circuits. Such steady bias currents are necessary to reduce temperature change due to self-heating and maintain a stable operating point of the circuit.Conclusion
The 1N5545B is a reliable and cost-effective Zener diode with an operation voltage of 45V and power rating of 500 mW. Due to its advantages such as the stability, cost-effectiveness, and stability of the Zener breakdown, this diode is used in applications that require a regulated and steady voltage. Examples of such applications include power supplies, voltage regulators, and bias circuits.The specific data is subject to PDF, and the above content is for reference
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