1N4465US/TR

Single Zener Diodes Overview

The 1N4465US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 10.0 V and a maximum power dissipation of 1.5 W at 25°C ambient temperature. It utilizes a hermetically sealed voidless glass package (D-5A MELF) and operates within a junction and storage temperature range of -65°C to +175°C. The device features a test current of 25.0 mA, a maximum dynamic impedance of 5 Ohms at the test point, and a maximum reverse leakage current of 0.30 µA at 8.00 V.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for high 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.
• 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 the specific military qualification level required for your application, as the base part number may be ordered under various reliability grades including JAN, JANTX, JANTXV, or JANS. Confirm RoHS compliance status if applicable, noting that compliant versions are typically restricted to commercial grade offerings. Ensure the tape and reel packaging meets EIA-481-B standards for automated assembly processes.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W surface mount Zener diode with a 10.0 V nominal voltage is required in a D-5A package. Consider the 5% standard tolerance unless tighter specifications are needed, which require specific ordering suffixes. Evaluate the thermal resistance and derating curves to ensure adequate heat dissipation within the specified -65°C to +175°C operating range.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of industry-recognized Zener voltage regulators. These components serve as surface mount equivalents to popular JEDEC registered axial-lead series, offering identical electrical performance in a compact voidless glass package suitable for modern high-density PCB layouts.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts from the 1N4460US–1N4496US series manufactured by Microchip Technology or Microsemi. Verify that any substitute matches the 10.0 V nominal voltage, 1.5 W power rating, and D-5A MELF package dimensions to maintain mechanical and electrical compatibility.

Single Zener Diodes FAQ

What is the maximum continuous current rating for the 1N4465US?

The maximum continuous regulator current (IZM) for the 1N4465US is 143 mA.

Is the 1N4465US resistant to radiation?

Yes, the device is inherently radiation hard as described in Microsemi MicroNote 050.

How is polarity indicated on the package?

Polarity is indicated by a band on the package, which marks the cathode end.