1N5277A

Single Zener Diodes Overview

The Microchip Technology 1N5277A is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 160 V with a tolerance of 10%. The device operates in the DO-7-2 (DO-35) through-hole package, dissipating up to 500 mW of power. Key electrical characteristics include a maximum reverse leakage current of 116 uA and a Zener impedance of 1.7 kOhms at the specified test current. It supports an operating temperature range from -65 C to +200 C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at high potential levels using avalanche breakdown principles.
• Constructed with glass axial-leaded encapsulation suitable for robust through-hole mounting.
• Engineered for extended thermal performance, supporting operation up to +200 C junction temperature.

Single Zener Diodes Applications

• High-voltage reference circuits requiring precise potential stabilization.
• Overvoltage protection stages in industrial control systems.
• Voltage clamping applications within aerospace or defense electronics.

Single Zener Diodes Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches DO-7-2 requirements. Ensure environmental compliance status aligns with project constraints, as RoHS certification may vary. Validate thermal ratings against final assembly conditions before integration.

Single Zener Diodes Selection Notes

Select this component when a 160 V regulation point is required with moderate precision. Consider the high Zener impedance for low-current applications. Evaluate the wide temperature range suitability for extreme environments. Compare against tighter tolerance variants if higher accuracy is necessary for the specific circuit design.

Single Zener Diodes Part Context

This part belongs to the standard 1N5221 through 1N5281B series of 0.5 W Zener diodes manufactured by Microchip Technology. The series offers a broad selection of voltages from 2.4 V to 200 V in standard DO-35 packages. Variants often include military screening options or tighter tolerance suffixes for specialized requirements.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N5277A equivalents meeting identical 160 V, 500 mW, and DO-35 specifications. Cross-reference with 1N5277B if 5% tolerance is acceptable instead of 10%. Verify pinout compatibility and thermal dissipation capabilities before substitution.