1N3019B-1/TR

Overview

The Microchip Technology 1N3019B-1/TR is a 1-watt glass case Zener diode qualified per MIL-PRF-19500/115. It features a hermetically sealed DO-41 package with tungsten slugs and metallurgically bonded construction. The nominal Zener voltage is 9.1 V at a test current of 28 mA, with a maximum dynamic impedance of 6 Ohms at IZT and 0.5 Ohms at IZK. Maximum reverse leakage current is 25 µA at 6.9 V reverse voltage. The device operates within a junction temperature range of -55°C to +175°C.

Feature Summary

• Hermetically sealed glass DO-41 package with tungsten slugs for high-reliability applications
• Qualified per MIL-PRF-19500/115 standards including JAN, JANTX, and JANTXV levels
• Metallurgically bonded double plug construction ensures structural integrity
• Inherently radiation hard design suitable for demanding environments

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability military and aerospace electronic circuits
• Radiation-hardened system designs requiring stable breakdown characteristics

Procurement Notes

Verify the specific qualification level (JAN, JANTX, or JANTXV) required for your application, as these are distinct reliability grades within the same part family. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military qualifications. Ensure the tape and reel packaging aligns with standard EIA-296 specifications before finalizing procurement orders.

Selection Notes

Select this component when a 9.1 V reference is needed in a through-hole glass package capable of handling 1 watt of power dissipation. Consider the 5% voltage tolerance and low leakage current requirements. Evaluate thermal derating curves for operation above 65°C ambient temperatures to ensure safe junction temperatures under load conditions.

Part Context

This device belongs to the 1N3016B-1 through 1N3045B-1 series of 1-watt Zener diodes. The series covers a wide voltage range from 6.8 V to 110 V in the same DO-41 package form factor. These parts are JEDEC registered and designed for robust performance in harsh environments where hermetic sealing is critical.

Replacement Considerations

Direct substitutes include other 1N3019B-1 variants from different manufacturers meeting MIL-PRF-19500/115 specifications. Verify pinout compatibility and physical dimensions match the DO-41 package constraints. Ensure replacement parts maintain equivalent thermal resistance and power derating capabilities.