1N4480

Single Zener Diodes Overview

The Microchip Technology 1N4480 is a 1.5-watt glass Zener diode with a nominal voltage of 43V and a test current of 6.0 mA. It features a maximum dynamic impedance of 40 Ohms at the test point and a maximum reverse leakage current of 0.25 µA at 34.4 V. The device operates within a junction temperature range of -65°C to +175°C, dissipating up to 1.5 W at a lead temperature of +112°C. Standard tolerance is ±5%, with tighter options available via suffixes.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for robust performance
• Qualified per MIL-PRF-19500/406 for high-reliability military applications
• Inherently radiation hard as described in Microsemi MicroNote 050
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability circuits where failure cannot be tolerated
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify specific ordering suffixes (JAN, JANTX, JANTXV, JANS) against project requirements, as these determine reliability levels and qualification standards. Confirm RoHS compliance status, noting that compliant versions are commercial grade only. Ensure package type matches design constraints, as axial-lead DO-41 is standard while surface mount variants exist under different part numbers.

Single Zener Diodes Selection Notes

Select based on required Zener voltage tolerance; standard parts offer ±5% without suffixes, while C and D suffixes provide 2% and 1% tolerances respectively. Consider thermal derating curves for power dissipation limits above ambient temperatures. Verify lead length and terminal plating options if specific mounting or soldering processes are mandated by the assembly line.

Single Zener Diodes Part Context

This component belongs to the 1N4460–1N4496 series of 1.5-watt Zener voltage regulators. The series provides industry-standard voltage selections from 3.3V to 200V. It is designed as a surface-mount equivalent to popular JEDEC registered series but is primarily supplied in axial-lead packages for through-hole integration in rugged environments.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4480, JANTX1N4480, JANTXV1N4480, and JANS1N4480. These share identical electrical characteristics but differ in reliability qualification levels and testing rigor according to MIL-PRF-19500/406 specifications.