1N4780/TR

Overview

The Microchip Technology 1N4780/TR is a temperature-compensated Zener diode designed for precision voltage regulation. It features an 8.5 V nominal Zener voltage with a 5% tolerance and operates within a wide junction temperature range of -65°C to +175°C. The device is housed in the DO-213AA (SOD-80) surface-mount package, dissipating up to 500 mW. Key electrical characteristics include a maximum reverse leakage current of 10 µA and a Zener impedance of 100 ohms at a test current of 1 mA.

Feature Summary

• Temperature compensated design ensures stable voltage regulation across extreme operating conditions.
• High thermal stability supports reliable performance in high-temperature environments up to 175°C.
• Surface-mount construction facilitates automated assembly and compact circuit board layouts.

Applications

• Precision voltage reference circuits requiring low temperature drift
• Over-voltage protection in harsh industrial environments
• Voltage regulation in aerospace and military electronic systems

Procurement Notes

Verify the specific suffix and manufacturer documentation to confirm the component meets required environmental standards. Ensure the ordering quantity aligns with reel packaging specifications provided by the supplier. Cross-reference the datasheet parameters against application requirements to validate suitability for high-reliability designs.

Selection Notes

Select this component when precise voltage stability is critical over a wide temperature spectrum. The 8.5 V rating suits applications needing regulation near this potential. Consider the SMD package for space-constrained designs. Verify that the 500 mW power dissipation capability matches the thermal management strategy of the target system.

Part Context

This part belongs to Microchip's temperature-compensated Zener diode series, engineered for superior stability compared to standard Zeners. These devices utilize internal compensation techniques to minimize voltage drift with temperature changes, making them suitable for high-precision analog and digital reference applications where standard components would fail to maintain accuracy.

Replacement Considerations

Consult official substitution guides for compatible equivalents. Verify pinout compatibility and electrical parameter alignment before replacing.