1N4762A

Overview

The SMC Diode Solutions 1N4762A is a silicon unidirectional voltage regulator diode designed for general-purpose applications. It features an 82 V nominal Zener voltage with a 5% tolerance and a maximum power dissipation of 1 W. The device utilizes a DO-41 axial glass passivated package, ensuring reliable performance across a wide temperature range from -55 °C to +150 °C. Key electrical characteristics include a maximum dynamic impedance of 200 Ω and a low reverse leakage current, making it suitable for stable voltage regulation in electronic circuits.

Feature Summary

• Provides stable voltage regulation at a nominal 82 V level
• Features glass passivation for enhanced environmental durability
• Supports high thermal stability up to 150 °C junction temperature

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in power supply systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific manufacturer designation on the component marking, as the 1N4762A is a standardized JEDEC part number produced by multiple vendors including SMC Diode Solutions. Confirm that the received units match the required DO-41 package dimensions and lead configuration. Ensure compliance with relevant environmental standards such as RoHS if mandated by the end application requirements.

Selection Notes

Select this component when a robust 82 V regulation point is needed within a standard through-hole form factor. The 1 W power rating allows for moderate current handling capabilities compared to lower-power variants. Consider the 200 Ω dynamic impedance when designing for tight voltage stability under varying load conditions, as higher impedance may result in greater voltage deviation during transient events.

Part Context

This component belongs to the widely recognized 1N47xx series of Zener diodes, which are industry-standard parts used extensively in discrete electronics. The 1N4762A specifically represents the upper end of the common voltage range for this series, offering a high-voltage regulation option without requiring complex multi-diode configurations or specialized high-voltage components.

Replacement Considerations

Direct replacements include equivalent parts from other manufacturers such as Vishay (1N4762A), Microchip (1N4762AUR/TR), and Taiwan Semiconductor (1N4762A). These alternatives share identical electrical specifications and mechanical footprint, allowing for pin-compatible substitution in existing designs.