1N4625-1E3/TR

Overview

The Microchip Technology 1N4625-1E3/TR is a single silicon Zener diode housed in a DO-204AH (DO-35) axial leaded glass package. It provides a nominal Zener voltage of 4.3 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Key electrical characteristics include a maximum dynamic impedance of 1600 Ohms, a reverse leakage current of 2 µA at 2 V, and a forward voltage of 1.1 V at 200 mA. This component is supplied in tape and reel packaging.

Feature Summary

• Hermetically sealed glass axial-leaded construction for environmental stability
• Low noise performance suitable for precision voltage regulation applications
• Extended thermal operating range supporting high-temperature environments

Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• Voltage clamping applications

Procurement Notes

Verify the specific suffix configuration against the original design specification. Confirm that the tape and reel format aligns with automated assembly requirements. Ensure the manufacturer designation matches the approved vendor list. Validate compliance with relevant environmental directives prior to integration into the final product assembly.

Selection Notes

Select this component when a 4.3 V regulation point is required in an axial through-hole form factor. Consider the 500 mW power rating for thermal management calculations. Evaluate the low leakage current specifications for sensitive analog signal paths. Compare against standard commercial variants if hermetic sealing or extended temperature ranges are not strictly necessary for the target application environment.

Part Context

This part belongs to the 1N4625 series of low noise Zener diodes manufactured by Microchip Technology. The series offers various voltage options within the same physical package family. The -1E3 suffix indicates RoHS compliance and metallurgical bonding. These devices are commonly utilized in aerospace, defense, and industrial sectors requiring reliable voltage regulation components.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4625 equivalents meeting identical electrical parameters. Verify pinout compatibility and package dimensions before substitution. Cross-reference datasheets to ensure equivalent dynamic impedance and leakage current limits are maintained.