1N4472US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4472US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 20 V. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5 W at 25°C ambient. The device features a maximum dynamic impedance of 12 Ohms at the test current of 12.5 mA, with a maximum reverse leakage current of 5 µA at 16 V. It utilizes a D-5A (SQ-MELF) package and is qualified per MIL-PRF-19500/406.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for high reliability.
• Triple-layer passivation provides robust protection against environmental stressors.
• Inherently radiation hard and non-sensitive to electrostatic discharge.
• Surface mount equivalent of popular JEDEC registered axial series.

Single Zener Diodes Applications

• High-reliability military and aerospace circuits where failure is not tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Reference voltage sources in harsh environments requiring radiation hardness.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the package type corresponds to the D-5A MELF form factor. Ensure the procurement documentation references the correct MIL-PRF-19500/406 qualification level appropriate for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a 20 V Zener reference is required in a surface mount configuration. Consider the 1.5 W power dissipation capability and the wide thermal operating range. Verify that the 12 Ohm dynamic impedance meets the circuit's noise and stability requirements. Check if the specific reliability grade aligns with the system's mission profile.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These devices are designed as surface mount replacements for traditional axial lead components while maintaining hermetic sealing. The series covers a wide voltage range from 3.3 V to 200 V with various tolerance options available.

Single Zener Diodes Replacement Considerations

JAN1N4472DUS/TR

Single Zener Diodes FAQ

What is the maximum steady-state power dissipation?

The maximum steady-state power dissipation is 1.5 W at an ambient temperature of 25°C.

Is the device sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD per MIL-STD-750 method 1020.