1N3018B-1/TR

Overview

The Microchip Technology 1N3018B-1/TR is a 1-watt Zener diode in a glass DO-41 package. It provides an 8.2V nominal voltage with a 5% tolerance at a test current of 31mA. The device features a maximum dynamic impedance of 4.5 Ohms and a reverse leakage current of 50µA. Qualified per MIL-PRF-19500/115, it operates from -55°C to +175°C.

Feature Summary

• Hermetically sealed glass DO-41 package for high-reliability environments
• Qualified under JAN, JANTX, and JANTXV military standards
• Inherently radiation hard design suitable for harsh conditions

Applications

• Voltage regulation over broad operating ranges
• High-reliability aerospace and defense circuits
• Radiation-hardened electronic systems

Procurement Notes

Verify the specific suffix against official documentation to confirm tape-and-reel packaging availability. Confirm RoHS compliance status as commercial versions differ from qualified levels. Ensure the ordering code matches the required military qualification level (JAN, JANTX, or JANTXV) before procurement.

Selection Notes

Select this component for applications requiring hermetic sealing and radiation hardness. The 1W power rating supports higher current loads compared to lower-power series. Verify that the 8.2V breakdown voltage aligns with circuit requirements and that the DO-41 through-hole package fits the board layout constraints.

Part Context

This part belongs to the established 1N3016B-1 through 1N3045B-1 series. These devices offer a wide selection of voltages from 6.8V to 110V within the same glass package. The series is designed for robust performance in demanding industrial and military sectors.

Replacement Considerations

Consult the manufacturer's nomenclature guide for exact equivalents. Substitutes must match the 8.2V Zener voltage, 1W power dissipation, and DO-41 package dimensions. Verify that any replacement maintains the required MIL-PRF-19500/115 qualification level.