1N4462US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4462US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 7.5 V and a test current of 34 mA. It features a maximum dynamic impedance of 2.5 Ohms at the test point and a maximum reverse leakage current of 1.0 µA at 4.50 V. The device supports a maximum continuous DC current of 191 mA and handles a non-repetitive surge current of 1.9 A under an 8.3 ms square wave condition. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5 W of steady-state power.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability.
• Military qualification per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge (ESD).
• Triple-layer passivation provides robust protection against environmental stress.

Single Zener Diodes Applications

• High-reliability aerospace and defense circuits where failure is not tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Radiation-hardened electronic systems requiring stable reference voltages.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required military qualification level (JAN, JANTX, JANTXV, or JANS) and tolerance class. Confirm RoHS compliance status, as commercial versions differ from qualified levels. Ensure the tape and reel packaging aligns with EIA-481-B standards for automated assembly processes.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for extreme environments. The D-5A MELF package offers a compact footprint suitable for space-constrained designs. Consider the thermal resistance characteristics and derating curves if operating near the maximum junction temperature limits.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of 1.5-watt Zener regulators. These devices are industry-recognized equivalents to popular JEDEC registered series but feature superior hermetic sealing. The series covers a wide voltage selection from 3.3 to 200 volts with standard 5% tolerance options.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 7.5 V nominal voltage, 1.5 W power rating, and D-5A MELF package. Verify that substitute components meet the same MIL-PRF-19500/406 qualification requirements and possess compatible thermal impedance characteristics for the application environment.

Single Zener Diodes FAQ

What is the maximum surge current capability of the 1N4462US?

The device can withstand a non-repetitive peak surge current of 1.9 A when subjected to an 8.3 ms square wave pulse.

Is the 1N4462US resistant to electrostatic discharge?

Yes, the component is non-sensitive to ESD in accordance with MIL-STD-750 method 1020.