1N4986US

Single Zener Diodes Overview

The Microchip Technology 1N4986US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 150 V and a maximum power dissipation of 5 Watts. It operates within a junction temperature range of -65°C to +175°C. The device features a test current (IZT) of 8 mA, a dynamic impedance (ZZT) of 330 Ohms, and a reverse leakage current of 2 µA at 114 V. The package is the E-type or D-5B SQ-MELF, utilizing voidless hermetically sealed glass construction.

Single Zener Diodes Feature Summary

• Military qualified to MIL-PRF-19500/356 for high-reliability applications
• Voidless hermetically sealed glass package with internal metallurgical bonds
• Triple-layer passivation for enhanced robustness
• Inherently radiation hard

Single Zener Diodes Applications

• High-reliability aerospace systems
• Defense electronics requiring failure-intolerant components
• Radiation-hardened circuit protection
• Precision voltage regulation in extreme environments

Single Zener Diodes Procurement Notes

Verify that the component matches the specific military qualification standard MIL-PRF-19500/356. Confirm the package type is the surface mount SQ-MELF (D-5B). Ensure the supplier provides documentation regarding the voidless hermetic seal and metallurgical bond integrity. Check for any specific handling requirements related to the glass construction.

Single Zener Diodes Selection Notes

Select this component when a 150 V Zener reference is required in a surface mount configuration. It is suitable for designs needing 5 W power handling capability in a compact form factor. Consider the 330 Ohm dynamic impedance for noise-sensitive circuits. Verify thermal management capabilities given the 175°C maximum operating temperature.

Single Zener Diodes Part Context

This part belongs to the 1N49xxUS series of surface mount Zener diodes manufactured by Microchip Technology's Scottsdale Division. These devices are industry-recognized for their robust construction and are available in various voltage ratings from 3.3 V to 390 V. The 'US' suffix denotes the surface mount package variant.

Single Zener Diodes Replacement Considerations

Axial-leaded equivalents such as 1N4986 are available by deleting the US suffix. Other variants like JAN1N4986CUS/TR offer similar electrical characteristics in tape and reel packaging.