SM16Z4689

Overview

The SM16Z4689 is a HEX-RegTM 5.1 Volt Zener Diode Array designed for hex attenuator driver components. It supplies a 5 volt bias at 50 µA. The device features eight independent Zener diodes with a nominal voltage of 5.1 V and a power rating of 1.5 W. Each diode has a tolerance of ±5%. It is housed in a 16-SOIC package.

Feature Summary

• Provides stable 5V bias for hex attenuator drivers
• Contains eight independent Zener diodes
• Designed for high-reliability applications

Applications

• Hex attenuator driver biasing
• Communication systems
• Aerospace & defense electronics

Procurement Notes

Verify the manufacturer designation, as this component was originally produced by Microsemi Corporation, which is now a subsidiary of Microchip Technology Inc. Confirm the specific ordering suffix (E3) matches your requirements. Check current availability status, as the part may be discontinued or have limited stock depending on the distributor source.

Selection Notes

Select this component when a precise 5.1V reference is required for multiple channels in attenuator circuits. Ensure the 16-SOIC package fits the PCB layout constraints. Verify that the 50 µA bias current requirement aligns with the downstream driver specifications before finalizing the design.

Part Context

This component belongs to the family of precision Zener diode arrays used for voltage regulation and reference applications. It is part of Microsemi's portfolio of analog and mixed-signal integrated circuits, which are widely utilized in critical infrastructure sectors such as telecommunications and defense systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is marked as discontinued by some sources, consult Microchip Technology for potential cross-reference options or newer generation replacements.