1N4581-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4581-1/TR is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a test current of 4 mA. It features a maximum temperature coefficient of 0.005 %/°C (0.32 mV/°C) and a maximum dynamic impedance of 25 Ohms at the specified test current. The device operates within a temperature range of -65°C to +175°C, dissipates up to 500 mW, and has a maximum reverse leakage current of 2 µA at 3 V. It utilizes an internal metallurgical bond and is supplied in a DO-7 axial leaded package.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change over broad operating ranges
• Internal metallurgical bonded construction for enhanced stability
• Hermetically sealed glass case providing environmental protection

Single Zener Diodes Applications

• Instrumentation requiring stable voltage references
• Precision circuit designs sensitive to temperature variations
• Military qualification applications meeting MIL-PRF-19500/452 standards

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against official datasheets before ordering. Confirm that the TR suffix aligns with the required tape and reel packaging specifications. Ensure the selected part number matches the necessary military or commercial qualification levels. Cross-reference the manufacturer's latest documentation to confirm availability and compliance status.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with low temperature drift is required. The 4 mA test current setting suits applications needing moderate power dissipation while maintaining stability. Consider the DO-7 package dimensions for board layout constraints. Evaluate the 25 Ohm dynamic impedance against the noise sensitivity of the target circuit.

Single Zener Diodes Part Context

This device belongs to the 1N4565 through 1N4584A-1 series of Zero-TC Reference Diodes. These components are designed to provide precise voltage regulation with minimal thermal drift. The series offers various temperature coefficients and test currents to accommodate different precision requirements across industrial and military sectors.

Single Zener Diodes Replacement Considerations

Direct substitutes include other parts from the 1N4565-1N4584A-1 series with matching electrical characteristics. Verify compatibility regarding package type and mounting style when selecting alternatives.