1N4962US

Overview

The Microchip Technology 1N4962US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 15 V. It operates at a test current (IZT) of 75 mA and features a maximum dynamic impedance (ZZT) of 3.5 Ohms. The device dissipates up to 5 Watts of power, with a maximum reverse leakage current of 5 µA at 11.4 V. It withstands a surge current of 12 A for an 8.3 ms square wave pulse. The unit utilizes a voidless hermetically sealed glass package in the E (D-5B) configuration.

Feature Summary

• Hermetically sealed voidless-glass construction with internal metallurgical bonds
• Military qualification per MIL-PRF-19500/356 for high-reliability applications
• Inherently radiation hard design
• ESD robustness compliant with MIL-STD-750 Method 1020

Applications

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

Procurement Notes

Verify that the specific part number matches the required military qualification level and package style. Confirm compliance with applicable export control regulations and environmental standards prior to procurement. Ensure ordering specifications align with the manufacturer's latest documentation to avoid discrepancies in termination finishes or testing requirements.

Selection Notes

Select this component when a surface-mount Zener diode with 5 W power dissipation and strict reliability standards is required. The 1N4962US provides a 15 V reference point suitable for circuits demanding low leakage and stable performance across wide thermal ranges. Consider the D-5B footprint constraints during PCB layout planning.

Part Context

This device belongs to the 1N4954US through 1N4996US series of surface mount Zener regulators manufactured by Microsemi (now Microchip Technology). These components are designed for the Scottsdale Division production line and utilize a standard JEDEC registered numbering system adapted for ruggedized surface mount packaging.

Replacement Considerations

Axial-leaded equivalents such as the 1N4962 are available within the same family but require through-hole mounting. Other voltage ratings in the 1N4954US-1N4996US series share identical mechanical and electrical characteristics except for breakdown voltage.