1N3031BUR-1

Overview

The Microchip Technology 1N3031BUR-1 is a surface mount Zener diode with a nominal voltage of 30 V. It operates within a temperature range of -55 °C to +175 °C and dissipates up to 1.0 W DC power. The device features a hermetically sealed glass MELF package (DO-213AB) with a maximum reverse leakage current of 10 µA at 22.8 V. Electrical characteristics include a test current of 8.5 mA, dynamic impedance of 0.25 Ohms at IZT, and a temperature coefficient of 0.098 %/°C.

Feature Summary

• Hermetically sealed double plug glass construction for high reliability
• Metallurgically bonded internal contacts to reduce thermal resistance
• Leadless surface mount design suitable for high-density applications
• Inherently radiation hard and non-sensitive to ESD

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability military and aerospace electronic circuits
• Low parasitic requirement circuit designs

Procurement Notes

Verify the specific suffix codes against official documentation to confirm tolerance levels and RoHS compliance status. Ensure the procurement channel sources parts directly from authorized distributors or the manufacturer to guarantee authenticity and traceability. Confirm that the received components match the specified MIL-PRF-19500/115 qualification level required for the intended application environment.

Selection Notes

Select this component when a leadless surface mount Zener diode is required for space-constrained designs. The DO-213AB package offers lower parasitics compared to traditional axial leads. Consider the metallurgically enhanced contact design for applications demanding superior thermal performance and long-term stability under harsh environmental conditions.

Part Context

This part belongs to the 1N3016BUR-1 through 1N3045BUR-1 series of 1 Watt Surface Mount Zener Diodes. These devices serve as leadless equivalents to JEDEC registered 1N3016B-1 through 1N3045B-1 numbers in the DO-13 package. The series is qualified per MIL-PRF-19500/115 for JAN, JANTX, and JANTXV military standards.

Replacement Considerations

Direct replacements include other parts within the 1N3016BUR-1 to 1N3045BUR-1 series if voltage ratings differ. Verify package compatibility and electrical parameters before substituting with generic commercial grade equivalents.