1N4483US

Single Zener Diodes Overview

The Microchip Technology 1N4483US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 56 V. It operates within a junction temperature range of -65 °C to +175 °C and dissipates up to 1.5 W at 25 °C ambient temperature. The device features a maximum dynamic impedance of 70 Ohms at the test current of 4.5 mA, with a maximum reverse leakage current of 250 nA. It utilizes a D-5A-2 (MELF) package.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for robust reliability.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard design suitable for high-reliability applications where failure is not tolerated.

Single Zener Diodes Applications

• High-reliability voltage regulation in aerospace systems
• Military-grade circuit protection requiring extreme temperature stability
• Radiation-hardened electronic subsystems

Single Zener Diodes Procurement Notes

Verify the specific military qualification level required for your application, as the base part number may be ordered under various reliability suffixes such as JAN or JANS. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are typically commercial grade only. Ensure the ordering documentation explicitly states the tolerance level, as standard versions default to 5% unless specified otherwise.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for harsh environments. The 1N4483US provides a stable 56 V reference point with low leakage characteristics. Consider the thermal resistance and power derating curves if operating near the maximum junction temperature limits. Verify that the MELF package dimensions fit the designated PCB footprint.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These components serve as surface mount equivalents to traditional axial-lead JEDEC registered series. The series covers a wide voltage range from 3.3 V to 200 V, offering standardized tolerances and robust construction methods for demanding industrial and defense electronics.

Single Zener Diodes Replacement Considerations

The JANTXV1N4483DUS is a documented equivalent variant within the same product family. Other replacements include the 1N4483D for through-hole configurations. Verify pinout compatibility and package dimensions before substituting with non-Microchip manufacturers' parts.