1N4470US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4470US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 16 V and a maximum power dissipation of 1.5 W. It features a D-5A-2 (SQ-MELF) package, a test current of 15.5 mA, and a dynamic impedance of 10 Ohms at the specified test point. The device operates within a junction temperature range of -65 °C to +175 °C and includes a maximum reverse leakage current of 50 nA at 12.8 V.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds for robust performance.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Triple-layer passivation provides inherent radiation hardness and non-sensitivity to electrostatic discharge.

Single Zener Diodes Applications

• High-reliability applications where circuit failure cannot be tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Surface mount equivalents for popular JEDEC registered axial series.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level and RoHS compliance status. Confirm the package type corresponds to the surface mount MELF configuration rather than the axial lead variant. Ensure the tolerance specification aligns with the standard 5% rating unless tighter tolerances are explicitly ordered.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount solution is required for high-reliability environments. The 1.5 W power rating supports substantial current handling compared to smaller packages. Verify thermal resistance requirements against the junction-to-end cap specifications provided in the datasheet graphs.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of voidless hermetically sealed surface mount Zener diodes. The series covers a wide voltage selection from 3.3 V to 200 V with standard 5% tolerance options. It serves as the surface mount counterpart to the traditional axial-lead 1N4460–1N4496 series.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' surface mount Zener diodes rated for 16 V, 1.5 W, and SQ-MELF packaging. For military-grade requirements, verify equivalent MIL-PRF-19500/406 qualified parts. Axial 1N4470 variants require mechanical adaptation due to package differences.