1N3021B-1/TR

Overview

The Microchip Technology 1N3021B-1 is a 1-watt Zener diode with an 11 V nominal voltage and 5% tolerance. It operates within a -55°C to +175°C range in a hermetically sealed DO-41 glass package. Key electrical parameters include a maximum reverse leakage current of 10 µA at 8.4 V, a dynamic impedance of 8 Ohms at 23 mA, and a temperature coefficient of 0.078 %/°C. The device supports a maximum regulator current of 85 mA.

Feature Summary

• Hermetically sealed glass construction for high-reliability environments
• Qualified per MIL-PRF-19500/115 standards
• Inherently radiation hard design

Applications

• Voltage regulation over broad operating currents
• High-reliability military applications
• Radiation-hardened circuit protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's nomenclature guide to confirm RoHS compliance status and exact qualification level (JAN, JANTX, or JANTXV). Ensure the requested variant matches the required voltage tolerance and packaging configuration before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a robust 11 V reference in harsh conditions. The DO-41 package provides mechanical stability, while the low leakage current ensures minimal power loss in standby states. Verify thermal derating requirements if ambient temperatures exceed standard limits.

Part Context

This part belongs to the established 1N3016B-1 through 1N3045B-1 series of 1-watt glass case Zener diodes. The series offers a wide voltage selection from 6.8 to 110 volts, providing a standardized solution for various voltage regulation needs across commercial and military sectors.

Replacement Considerations

Equivalent parts include JAN1N3021DUR-1, JANTX1N3021DUR-1, and JANTXV1N3021DUR-1. These variants share the same JEDEC registration but differ in reliability levels and surface-mount packaging options.