Description
1N4751 30V Zener Voltage Regulator Diode
Product Overview
The 1N4751 is a high-precision, 1-watt Zener diode engineered to provide a stable, fixed reference voltage of 30V. This component is widely utilized in power management systems and protective circuits where a higher voltage threshold is required. By operating in the Zener breakdown region, it provides reliable voltage clamping, effectively shielding downstream electronics from transient surges and ensuring consistent performance on 30V power rails.
Housed in a robust DO-41 axial-lead package, the 1N4751 offers excellent thermal stability and environmental endurance. It is a preferred solution for engineers designing industrial automation, high-voltage instrumentation, and specialized power supply stages that require a clean, regulated 30V reference.
Key Features
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Precision 30V Regulation: Specifically calibrated for a nominal Zener voltage of 30V, serving as an ideal benchmark for higher-voltage control and analog circuits.
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1W Power Dissipation: Engineered to handle up to 1 watt of power, providing the thermal headroom necessary for sustained operation in demanding voltage regulation tasks.
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Sharp Breakdown Characteristic: Features a tight transition into regulation, which minimizes voltage ripple and ensures a steady output even when input voltages fluctuate.
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Rugged Construction: The DO-41 glass-passivated package is designed for longevity, resisting environmental moisture and thermal cycling in professional-grade assemblies.
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Ease of Assembly: Standard axial-lead design simplifies integration into both prototyping breadboards and permanent through-hole PCB layouts.
Technical Specifications
| Parameter | Specification |
| Component Type | Zener Voltage Regulator Diode |
| Nominal Zener Voltage ($V_Z$) | 30V |
| Power Dissipation ($P_D$) | 1W |
| Test Current ($I_{ZT}$) | 8.5mA |
| Package Type | DO-41 (Axial Lead) |
| Operating Temperature | -65°C to +200°C |
Applications
The go-to solution for 30V rail stabilization and transient protection:
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Voltage Regulation: Ideal for creating stable 30V power supplies for specialized industrial sensors, high-side drivers, and instrumentation.
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Overvoltage Protection: Functions as a shunt regulator to clamp transient voltage spikes, safeguarding sensitive components on 30V supply lines.
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Signal Conditioning: Useful for clamping or shifting signal levels in complex high-voltage control systems.
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Voltage Referencing: Serves as a fixed, stable 30V reference for analog-to-digital conversion and precision measurement circuits.
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