1N4963US/TR

Overview

The JAN1N4963US/TR is a military-qualified Zener voltage regulator manufactured by Microchip Technology. It features a nominal Zener voltage of 16 V with a tolerance of ±5%. The device is designed for surface-mount installation in the D-5B-2 package, providing a power dissipation rating of 5 W. Key electrical parameters include a maximum reverse leakage current of 5 µA and a Zener impedance of 3.5 Ohms at a test current of 75 mA. It operates within a temperature range of -65°C to +175°C.

Feature Summary

• Hermetically sealed construction using voidless-glass technology with internal metallurgical bonding for high reliability.
• Military qualification compliant with MIL-PRF-19500/356 standards for critical applications.
• Surface-mount design utilizing the D-5B-2 SQ package format.

Applications

• High-reliability aerospace systems
• Military-grade electronic circuits
• Critical voltage regulation where failure is not tolerated

Procurement Notes

Verify that the specific part number includes the JAN prefix to ensure compliance with the required military qualification standards. Confirm the presence of the US suffix and TR designation to validate the correct surface-mount package type and tape-and-reel packaging configuration before procurement.

Selection Notes

Select this component when a hermetically sealed, 5-watt Zener diode is required for harsh environments. Ensure the circuit design accommodates the specified 16 V breakdown voltage and the thermal management requirements associated with the D-5B-2 surface-mount footprint.

Part Context

This component belongs to the industry-recognized 5 Watt Zener Voltage Regulator series produced by Microchip's Scottsdale Division. The series offers various voltage selections from 3.3 to 390 volts, primarily targeting sectors requiring robust, voidless-glass sealed devices for long-term stability.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.