1N4776

Overview

The Microchip Technology 1N4776 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tolerance of 5%. The device operates in a through-hole DO-41-2 package and dissipates up to 1.5 W of power. Key electrical parameters include a Zener impedance of 20 ohms, a test current of 8.5 mA, and a maximum forward current of 1 A. It supports an operating temperature range from -65 °C to +175 °C.

Feature Summary

• Provides stable voltage regulation at a nominal 30 V level
• Capable of handling high power dissipation up to 1.5 W
• Features low Zener impedance for effective noise filtering
• Supports extended industrial temperature environments

Applications

• Voltage reference circuits requiring 30 V stability
• Overvoltage protection stages in power supplies
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tolerance specifications. Confirm that the required power derating curves align with your thermal design constraints. Ensure the through-hole DO-41 footprint matches your PCB layout requirements before finalizing procurement.

Selection Notes

Select this component when a robust 30 V regulation point is needed in high-power scenarios. The 1.5 W rating allows for operation in demanding thermal conditions without excessive heat sinking. Verify that the 20 ohm impedance meets the ripple rejection requirements of the target circuit design.

Part Context

This part belongs to the standard JEDEC 1N47xx series of glass-passivated Zener diodes manufactured by Microchip Technology. These components are widely used in general-purpose electronics for their reliability and standardized performance characteristics across a broad voltage range.

Replacement Considerations

Cross-reference with other manufacturers' 1N4776 equivalents or 1N52xx series parts if pin-compatible alternatives are required. Verify that substitute devices meet the same 1.5 W power dissipation and 30 V Zener voltage specifications.