1N4460US

Single Zener Diodes Overview

The Microchip Technology 1N4460US is a surface mount Zener voltage regulator diode with a nominal breakdown voltage of 6.2 V and a maximum steady-state 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 hermetically sealed voidless glass package (D-5A MELF) with an isolated end cap. Electrical characteristics include a test current of 40 mA, a maximum dynamic impedance of 4 Ohms at the test point, and a maximum reverse leakage current of 10 µA at 5.0 V.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds for robust reliability.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge.
• Surface mount equivalent of popular JEDEC registered axial series.

Single Zener Diodes Applications

• High-reliability voltage regulation where failure cannot be tolerated.
• Voltage reference circuits in harsh environments.
• Surge protection and clamping applications.

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number covers commercial through JANS qualifications. Confirm RoHS compliance status, as compliant versions are restricted to commercial grade only. Ensure the ordering suffix matches the desired tolerance and lead frame material specifications defined in the manufacturer's nomenclature guide.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 6.2 V Zener voltage in a compact surface mount form factor. Consider the 1.5 W power rating and thermal resistance when designing heat dissipation paths. Verify that the operating temperature range aligns with system requirements, noting the extended capability up to +175°C junction temperature.

Single Zener Diodes Part Context

This device belongs to the 1N4460US–1N4496US and 1N6485US–1N6491US series of 1.5 Watt glass Zener diodes. The series offers Zener selections from 3.3 to 200 volts with standard 5% tolerance, alongside tighter 1% and 2% options. It serves as the surface mount counterpart to traditional axial-lead components like the DO-41 package variants.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' D-5A MELF packaged Zener diodes rated at 6.2 V and 1.5 W. For military-grade equivalents, verify compatibility with MIL-PRF-19500/406 specifications. Axial-lead equivalents such as the 1N4460 in DO-41 packages may fit mechanically but require re-evaluation of mounting constraints.