1SMA4776A

Single Zener Diodes Overview

The NextGen Components 1SMA4776A is a surface-mount Zener diode in the DO-214AC (SMA) package. It features a nominal Zener voltage of 300V with a range of 289V to 315V. The device handles a peak pulse power of 1.0W and operates within a junction temperature range of -55°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 2300Ω at a test current of 1mA, an admissible Zener current of 230mA, and a typical reverse leakage current below 5.0μA above 11V.

Single Zener Diodes Feature Summary

• Glass passivated junction for enhanced stability
• Low profile SMA/DO-214AC package design
• Built-in strain relief mechanism
• High temperature soldering capability

Single Zener Diodes Applications

• General regulation circuits
• Voltage reference applications
• Over-voltage protection systems

Single Zener Diodes Procurement Notes

Verify that the specific part code matches the required marking code '776A' on the component body. Confirm compliance with RoHS III and REACH directives as stated in the specification sheet. Ensure the ordering suffix corresponds to the Tape/Reel packaging format if automated assembly is intended. Cross-reference with original manufacturer data to validate electrical tolerances before final procurement.

Single Zener Diodes Selection Notes

Select this component for designs requiring high-voltage regulation in a compact surface-mount footprint. The 300V nominal rating suits high-side or specialized biasing needs. Consider the 2300Ω dynamic impedance when designing for low-noise precision references. Verify thermal derating requirements for ambient temperatures exceeding 50°C to maintain the 1.0W power dissipation limit safely.

Single Zener Diodes Part Context

This device belongs to the 1SMA series of SMD Zener diodes manufactured by NextGen Components. It serves as a direct replacement for similar industry-standard parts like the MDD 1SMA4776A. The series offers a wide range of Zener voltages from 3.3V to 330V in the same SMA package, allowing for standardized inventory management across various voltage regulation projects.

Single Zener Diodes Replacement Considerations

The datasheet identifies MDD 1SMA4776A as a cross-reference part number. Verify pinout compatibility and exact voltage tolerance bands when substituting with other manufacturers' SMA packages.