1N4751AG

Overview

The Microsemi Corporation 1N4751AG is a silicon planar Zener diode housed in a hermetically sealed glass DO-204AL (DO-41) package. It provides a nominal Zener voltage of 30V with a standard tolerance of ±5%. The device is rated for a maximum power dissipation of 1W and operates within a temperature range from -65°C to +200°C. It features an isolated case connection and is designed for high-reliability applications requiring stable voltage regulation.

Feature Summary

• Hermetically sealed glass encapsulation ensures environmental stability
• High thermal operating capability up to 200°C
• Isolated case connection for flexible mounting

Applications

• Voltage regulation in high-reliability circuits
• Applications requiring strict source control drawings
• Military screening compliant designs

Procurement Notes

Verify the specific suffix 'G' indicates the glass hermetic package variant rather than the plastic equivalent. Confirm RoHS compliance status as it varies by manufacturing lot and prefix. Ensure the procurement order matches the required military screening level if applicable, as prefixes like MQ or MX alter the qualification standards.

Selection Notes

Select this component when a hermetically sealed glass body is mandatory for harsh environments. The 1N4751AG offers superior thermal performance compared to plastic variants. Verify that the 30V breakdown voltage aligns with circuit requirements and that the 1W power rating accommodates peak dissipation loads without exceeding junction temperature limits.

Part Context

This part belongs to the JEDEC registered 1N4728A through 1N4764A series of 1-watt Zener diodes. The 'G' suffix specifically denotes the glass axial-leaded DO-204AL package, distinguishing it from the plastic DO-41 version. It serves as a surface-mountable alternative to larger through-hole regulators while maintaining robust electrical characteristics.

Replacement Considerations

Electrically similar parts include the 1N4751A series. Surface mount equivalents are available as SMAJ4751A or MLL4751A. Plastic package alternatives exist under the 1N4751AP designation.