1N4481US

Single Zener Diodes Overview

The Microchip Technology 1N4481US is a surface mount Zener voltage regulator with a nominal voltage of 47 V and a power dissipation rating of 1.5 W. It features a standard 5% tolerance and operates within a temperature range of -65°C to +175°C. The device utilizes a D-5A-2 (MELF) package with a maximum dynamic impedance of 50 Ohms at a test current of 5.5 mA. Maximum reverse leakage current is specified at 50 nA, and the forward voltage reaches 1.5 V at 1 A.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for high reliability.
• Qualified per MIL-PRF-19500/406 for military applications including JAN, JANTX, JANTXV, and JANS levels.
• Triple-layer passivation provides robust protection against environmental stressors.

Single Zener Diodes Applications

• High-reliability voltage regulation where failure cannot be tolerated.
• Circuit protection in aerospace and defense systems.
• Industrial equipment requiring radiation-hardened components.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level, as commercial versions differ from military qualifications. Confirm RoHS compliance status if applicable, noting it is available on commercial grades only. Ensure the package type aligns with surface mount requirements. Check datasheet revisions for any recent packaging or assembly site changes before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W surface mount Zener diode with 47 V regulation is required. Consider the 50 Ohm dynamic impedance for circuit stability needs. Verify thermal management capabilities given the 1.5 W dissipation rating. Evaluate the operating temperature range against environmental conditions. Compare against through-hole equivalents if space constraints allow.

Single Zener Diodes Part Context

This part belongs to the 1N4460US–1N4496US series of surface mount Zener diodes. These devices serve as industry-recognized replacements for popular JEDEC registered axial-lead series. The series offers extensive voltage selections from 3.3 to 200 volts. They are designed for applications demanding robust construction and hermetic sealing.

Single Zener Diodes Replacement Considerations

JAN1N4481CUS

Single Zener Diodes FAQ

What is the maximum junction temperature for the 1N4481US?

The maximum junction and storage temperature is +175°C.

Is the 1N4481US sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD per MIL-STD-750 method 1020.