1N4984US

Single Zener Diodes Overview

The Microchip Technology 1N4984US is a surface mount Zener Voltage Regulator featuring a voidless hermetically sealed glass package. It provides a nominal Zener voltage of 120 V with a standard tolerance of ±5%. The device dissipates up to 5 Watts and operates within a temperature range of -65°C to +175°C. Key electrical parameters include a maximum reverse leakage current of 2 µA at 91.2 V, a dynamic impedance of 170 Ohms at the test current of 10 mA, and a forward voltage of 1.5 V at 1 A.

Single Zener Diodes Feature Summary

• Military qualified to MIL-PRF-19500/356 for high-reliability applications
• Voidless hermetically sealed glass construction with internal metallurgical bonds
• Extremely robust construction inherently radiation hard and ESD insensitive

Single Zener Diodes Applications

• High-reliability aerospace systems
• Defense electronics requiring failure-intolerant components
• Industrial equipment demanding extended temperature stability

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required military qualification standards and package type. Confirm that the ordering suffix corresponds to the desired voltage tolerance level. Ensure compatibility with existing board layouts regarding the D-5B footprint dimensions. Check for any specific handling requirements associated with hermetically sealed glass packages during assembly.

Single Zener Diodes Selection Notes

Select this component when a high-power surface mount Zener diode is required for critical circuits. The 5 Watt rating supports substantial power dissipation in compact designs. The wide operating temperature range ensures functionality in extreme environments. Verify that the 120 V breakdown voltage aligns precisely with the circuit's regulation needs.

Single Zener Diodes Part Context

This device belongs to the 1N4954US through 1N4996US series of surface mount Zener regulators. These components are manufactured by Microsemi, now part of Microchip Technology. The series offers various voltage options from 3.3 V to 390 V in a standardized E-package form factor suitable for automated surface mount assembly processes.

Single Zener Diodes Replacement Considerations

JAN1N4984CUS

Single Zener Diodes FAQ

What is the thermal resistance of the 1N4984US?

The thermal resistance from junction to end cap is 7 °C/W.

How is polarity indicated on the device?

Polarity is indicated by a band on the cathode end of the package.