Description
1N4745A 16V Zener Voltage Regulator Diode
Product Overview
The 1N4745A is a precision-engineered, 1-watt Zener diode designed to maintain a stable reference voltage of 16V. As a critical component for voltage regulation and transient protection, this diode provides a sharp breakdown characteristic, ensuring that voltage levels remain clamped at the specified 16V threshold even under varying load conditions.
Housed in a robust DO-41 axial-lead package, the 1N4745A is built to endure the thermal stresses associated with power supply regulation and circuit protection. It is an essential component for engineers designing power management circuits, overvoltage protection schemes for 16V rails, or precision reference voltages in industrial and consumer electronics.
Key Features
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Precision 16V Regulation: Specifically calibrated to hold a nominal Zener voltage of 16V, offering stable performance for circuits requiring a precise 16V rail.
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1W Power Dissipation: Optimized for applications requiring reliable power handling, providing more thermal headroom than standard small-signal Zener diodes.
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Tight Voltage Tolerance: Manufactured with a 5% tolerance, ensuring predictable behavior and consistent circuit performance across production lots.
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Robust Thermal Design: The DO-41 glass-passivated axial package is engineered for long-term reliability and efficient heat dissipation in demanding environments.
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Low Dynamic Impedance: Ensures minimal voltage ripple, providing a clean and stable reference output for analog signal processing.
Technical Specifications
| Parameter | Specification |
| Component Type | Zener Voltage Regulator Diode |
| Nominal Zener Voltage ($V_Z$) | 16V |
| Power Dissipation ($P_D$) | 1W |
| Test Current ($I_{ZT}$) | 15.5mA |
| Package Type | DO-41 (Axial Lead) |
| Tolerance | $\pm 5\%$ |
| Operating Temperature | -65°C to +200°C |
Applications
The go-to solution for 16V rail stabilization and component protection:
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Voltage Regulation: Ideal for maintaining a stable 16V DC supply in power adapter circuits or custom instrumentation modules.
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Overvoltage Clamping: Serves as a protective shunt to prevent voltage surges from damaging sensitive downstream components on 16V lines.
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Reference Voltage Generation: Provides a fixed 16V reference for analog-to-digital conversion, op-amp biasing, and other measurement circuits.
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Level Shifting: Effectively limits signals in control logic or sensor interfaces to a maximum threshold of 16V.
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