1N4480US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4480US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 43.0 V and a maximum power dissipation of 1.5 W at 25°C ambient temperature. It operates within a junction and storage temperature range of -65°C to +175°C. The device features a maximum dynamic impedance of 40 Ohms at the test current of 6.0 mA, a maximum continuous current of 33 mA, and a surge current rating of 0.33 Amps for an 8.3 ms square wave.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass package with internal metallurgical bonds
• Military qualification per MIL-PRF-19500/406
• Inherently radiation hard design

Single Zener Diodes Applications

• High-reliability applications where failure cannot be tolerated
• Voltage regulation over broad operating current and temperature ranges
• ESD non-sensitive environments per MIL-STD-750 method 1020

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the reliability grade (JAN, JANTX, JANTXV, or JANS) aligns with project specifications. Ensure the package type corresponds to the intended surface mount footprint. Check for any specific environmental documentation requirements associated with the military qualification standard.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W surface mount Zener diode with high thermal robustness is required. Consider the 43.0 V nominal voltage and 40 Ohm dynamic impedance for circuit stability. Evaluate the -65°C to +175°C operating range against environmental conditions. Verify compatibility with existing PCB layouts designed for the A (D-5A) MELF package dimensions.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of voidless hermetically sealed surface mount 1.5 Watt glass Zener diodes. The series offers Zener selections from 3.3 to 200 volts with standard 5% tolerance. It serves as the surface mount equivalent of popular JEDEC registered axial-lead series, providing industry-recognized reliability for critical electronic systems.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts in the 1N4460US–1N4496US series with matching voltage ratings. Axial-lead equivalents such as the 1N4480 are available but require different mounting considerations. Verify that substitute components meet the same MIL-PRF-19500/406 qualification standards.