1N4570-1

Single Zener Diodes Overview

The Microchip Technology 1N4570-1 is a temperature-compensated Zener reference diode featuring a nominal voltage of 6.4 V with a tight tolerance of ±1%. It operates in the DO-204AH (DO-35) axial leaded package and dissipates up to 500 mW. The device exhibits a low voltage temperature coefficient of approximately 0.01 %/°C, ensuring minimal voltage drift across temperatures ranging from -65 °C to +175 °C. Key electrical characteristics include a test current of 0.5 mA, a maximum reverse leakage current of 2 µA, and a Zener impedance of 100 Ohms.

Single Zener Diodes Feature Summary

• Temperature compensated design for stable reference voltage
• Internal metallurgical bond construction for enhanced reliability
• High precision voltage tolerance of ±1%
• Wide operating temperature range capability

Single Zener Diodes Applications

• Precision voltage reference circuits
• Military and aerospace electronic systems
• High-reliability instrumentation
• Temperature-stable power supply regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as the -1 suffix denotes internal metallurgical bonding which affects qualification status. Confirm whether the required variant is available in bulk or reel packaging formats. Ensure that the procurement documentation explicitly states the ±1% tolerance grade, as standard versions may differ. Cross-reference the manufacturer's latest datasheet to confirm compliance with current military specifications if applicable to the end-use environment.

Single Zener Diodes Selection Notes

Select this component when high stability and precision are critical over wide temperature variations. The 1N4570-1 is suitable for applications requiring tighter voltage tolerances than standard Zener diodes. Consider the DO-35 package constraints for board space. Evaluate the need for metallurgical bonding if the application demands higher mechanical robustness against shock and vibration compared to fused junction alternatives.

Single Zener Diodes Part Context

This part belongs to the 1N4565 through 1N4584A series of Zero-TC Reference Diodes manufactured by Microsemi (now Microchip). These devices are designed to provide stable reference voltages with minimal change due to temperature fluctuations. The series includes various voltage options around the 6.4 V nominal point, catering to different circuit requirements while maintaining consistent performance characteristics across the family.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N4570 variants such as 1N4570A or 1N4570A-1, provided the ±1% tolerance and metallurgical bond specifications match the design requirements. Verify package compatibility and thermal ratings before substitution.