1N4474US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4474US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 24 V and a maximum power dissipation of 1.5 W. It features a standard voltage tolerance of ±5% and a dynamic impedance of 16 Ohms at the test current of 10.5 mA. The device operates within a junction temperature range of -65°C to +175°C and utilizes an A (D-5A) SQ-MELF package.

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.

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's nomenclature guide to confirm the exact reliability level and RoHS compliance status. Ensure the requested quantity aligns with the tape and reel packaging requirements specified in the datasheet. Confirm that the component meets the necessary military or commercial grade standards required by the design specifications.

Single Zener Diodes Selection Notes

Select this component when a 1.5 W surface mount Zener diode with high thermal stability is required. The SQ-MELF package provides a compact footprint suitable for space-constrained designs. Consider the specific tolerance and leakage current characteristics relative to the circuit's sensitivity to ensure proper voltage regulation performance under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of industry-recognized 1.5 Watt Zener voltage regulators. These devices serve as surface mount equivalents to popular JEDEC registered axial-lead series, offering hermetically sealed glass packages for enhanced durability in demanding environments.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts from the 1N4460US–1N4496US series manufactured by Microchip or Microsemi. Verify that any substitute maintains the same SQ-MELF package dimensions and electrical parameters to ensure mechanical and functional compatibility.