JAN1N3821DUR-1/TR

Single Zener Diodes Overview

The JAN1N3821DUR-1/TR is a silicon Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 3.3 V with a tight tolerance of ±1%. The device is rated for a maximum power dissipation of 1 W and operates within an extended temperature range from -55°C to +175°C. Packaged in the DO-213AB MELF glass form factor, it utilizes surface-mount technology. Key electrical characteristics include a maximum reverse leakage current of 10 µA at 8.4 V and a forward voltage of 1.2 V at 200 mA. The component meets MIL-PRF-19500/115 standards.

Single Zener Diodes Feature Summary

• Hermetically sealed construction in a leadless DO-213AB MELF glass package suitable for surface mounting.
• Military-grade reliability compliant with MIL-PRF-19500/115 specifications.
• Extended operational temperature capability ranging from -55°C to +175°C.
• High precision voltage regulation with ±1% tolerance available via specific suffix designations.

Single Zener Diodes Applications

• Precision voltage reference circuits in harsh environments
• Over-voltage protection in military avionics systems
• Voltage regulation in space-constrained surface-mount designs

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix to confirm the exact tolerance level and packaging configuration required for the application. Ensure compatibility with MIL-PRF-19500/115 quality standards if military grade performance is mandated. Confirm that the DO-213AB MELF footprint matches the target PCB layout. Check for any recent Product Change Notifications regarding assembly sites or labeling changes before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed, surface-mount Zener diode with high thermal stability is required. The 1 W power rating supports moderate current handling in compact packages. Consider the ±1% tolerance option if tighter voltage regulation is necessary compared to standard commercial variants. Ensure the operating environment stays within the specified -55°C to +175°C range to maintain performance integrity.

Single Zener Diodes Part Context

This part belongs to the 1N3821A(UR)-1 series of silicon voltage regulators produced by Microchip Technology. The series includes various Zener voltage options ranging from 3.3 V to higher values, all sharing similar physical and electrical characteristics. The 'JAN' prefix indicates a specific military qualification level, while the 'UR-1' suffix denotes the MELF package style. This family is designed for reliable operation in demanding electronic systems.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Equivalent components may be found among other manufacturers offering MIL-PRF-19500/115 qualified DO-213AB Zener diodes with matching 3.3 V, 1 W, and ±1% specifications. Verify pinout and thermal characteristics before substitution.