1N5291UR-1 Overview
The 1N5291UR-1 is a precision silicon voltage regulator diode designed for stable voltage reference applications. Featuring a nominal breakdown voltage of 75 volts, it provides reliable voltage regulation in various electronic circuits. Its robust design supports a maximum power dissipation of 5 watts, ensuring dependable performance under demanding conditions. This diode is housed in a DO-41 axial package, facilitating easy integration into through-hole PCB layouts. Ideal for industrial and commercial electronics, it offers consistent voltage stability, making it a preferred choice for engineers requiring accurate voltage regulation. For more details, visit IC Manufacturer.
1N5291UR-1 Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal Zener Voltage (Vz) | 75 V |
| Maximum Power Dissipation (Ptot) | 5 W |
| Test Current (IzT) | 11 mA |
| Maximum Zener Impedance (Zzt) | 20 ?? |
| Maximum Reverse Leakage Current (Ir) | 200 ??A at VR = 50 V |
| Operating Temperature Range | -65??C to +200??C |
| Package Type | DO-41 axial |
| Forward Voltage (Vf) | 1.2 V at 200 mA |
1N5291UR-1 Key Features
- Stable 75 V Zener Voltage: Provides precise voltage regulation for circuits requiring consistent reference voltage, enhancing overall system accuracy.
- High Power Dissipation Rating: Supports up to 5 W, enabling reliable operation in high-stress environments without overheating.
- Low Zener Impedance: Ensures minimal voltage variation with changing current, contributing to stable voltage output and improved circuit performance.
- Wide Temperature Range: Maintains performance from -65??C to +200??C, suitable for harsh industrial applications and extended reliability.
1N5291UR-1 Advantages vs Typical Alternatives
This voltage regulator diode offers superior voltage stability with a low zener impedance and a high power rating compared to typical zener diodes. Its robust temperature tolerance and low leakage current provide enhanced reliability and precision in industrial electronics. These characteristics make it an excellent choice over alternatives that may lack consistent regulation or degrade under high power or temperature stress.
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Typical Applications
- Voltage reference in precision power supplies where stable voltage is critical for performance and safety.
- Surge voltage protection in electronic circuits to safeguard sensitive components from transient voltage spikes.
- Voltage clamping in signal conditioning applications to maintain signal integrity and prevent overvoltage damage.
- Use in industrial control systems requiring robust and reliable voltage regulation across varied environmental conditions.
1N5291UR-1 Brand Info
The 1N5291UR-1 is part of a long-standing series of silicon voltage regulator diodes known for industrial-grade reliability and performance. Manufactured under stringent quality controls, this diode is designed for applications demanding stable voltage references and high durability. It is widely adopted in sectors such as telecommunications, instrumentation, and power management, reflecting its proven track record in critical electronic systems.
FAQ
What is the nominal voltage rating of this voltage regulator diode?
The diode is rated for a nominal zener voltage of 75 volts, which means it maintains a stable voltage close to this value when operating in its breakdown region, making it suitable for 75 V reference applications.
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What is the maximum power dissipation capacity?
This device can handle a maximum power dissipation of 5 watts, allowing it to operate safely in circuits with relatively high current and power levels without risk of thermal damage.
In what temperature range can this component operate reliably?
The diode supports a wide operating temperature range from -65??C to +200??C, enabling use in harsh industrial environments and ensuring stable performance over extreme temperature variations.
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How does the low zener impedance benefit circuit design?
Low zener impedance means the voltage across the diode changes very little with variations in current, resulting in a more stable voltage output. This improves the accuracy and reliability of voltage regulation in sensitive electronic circuits.
What package type does this voltage regulator diode come in?
The device is housed in a DO-41 axial package, which is a standard through-hole package facilitating easy mounting and soldering on printed circuit boards, suitable for both prototype and production environments.






