JAN1N3821AUR-1

Single Zener Diodes Overview

The JAN1N3821AUR-1 is a military-grade Zener diode manufactured by Microchip Technology, compliant with MIL-PRF-19500/115 specifications. It features a nominal Zener voltage of 3.3V with a tolerance of ±5% and a maximum power dissipation of 1W. The device utilizes a leadless DO-213AB (MELF) glass package designed for surface mount applications. Key electrical characteristics include a maximum Zener impedance of 10 ohms at the test current and a reverse leakage current of 3µA at 2V. The forward voltage is specified as 1.2V maximum at 200mA. It operates within an extended temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Military-grade reliability compliant with MIL-PRF-19500/115 standards
• Leadless DO-213AB MELF glass package for surface mount integration
• Double plug construction design
• Extended operating temperature range suitable for harsh environments

Single Zener Diodes Applications

• Precision voltage regulation in military avionics systems
• Over-voltage protection circuits in aerospace electronics
• Reference voltage sources in high-reliability instrumentation
• Clamping applications in defense communication equipment

Single Zener Diodes Procurement Notes

Verify that the specific order includes the JAN prefix to ensure compliance with MIL-PRF-19500/115 military quality standards. Confirm the DO-213AB MELF package type matches the PCB footprint requirements. Ensure the supplier provides appropriate traceability documentation required for defense and aerospace procurement processes.

Single Zener Diodes Selection Notes

Select this component when a 3.3V reference with tight tolerance is required in space-constrained surface mount designs. The MELF package offers robustness against mechanical shock compared to standard axial leads. Consider the 1W power rating and thermal derating characteristics for high-temperature operational environments exceeding standard commercial limits.

Single Zener Diodes Part Context

This part belongs to the 1N3821A series of Zener diodes produced under military specifications. It shares the same basic structure and electrical profile as commercial variants but undergoes stricter screening and testing protocols. The series covers various voltage ratings while maintaining consistent package dimensions and performance characteristics across the product line.

Single Zener Diodes Replacement Considerations

Direct substitutes include other JAN-series parts from the same MIL-PRF-19500/115 family, such as JANTX1N3821AUR-1 or JANTXV1N3821AUR-1, which offer enhanced screening levels. Commercial equivalents like the CDLL3821 may fit physically but lack the guaranteed military qualification and extended temperature performance.