1N3017BUR-1

Overview

The Microchip Technology 1N3017BUR-1 is a surface mount glass Zener diode with a nominal voltage of 7.5 V and a power dissipation rating of 1.5 W at 25°C. It operates within a temperature range of -65°C to +175°C. Key electrical parameters include a test current (IZT) of 34 mA, maximum Zener impedance (ZZT) of 4.0 Ohms, and maximum reverse leakage current (IR) of 5 µA at 5.7 V. The device features a typical voltage temperature coefficient of 0.045 %/°C and a steady-state power limit of 1.25 W on an FR4 board.

Feature Summary

• Hermetically sealed double-slug glass construction for high reliability
• Metallurgically enhanced internal contact design for lower thermal resistance
• Leadless surface mount package suitable for high-density mounting
• Inherently radiation hard

Applications

• High-reliability applications requiring hermetic sealing
• High-density circuit mounting
• Voltage regulation over broad operating currents and temperatures
• Low parasitic requirement circuits

Procurement Notes

Verify the specific manufacturer source, as this component originates from Microsemi which was acquired by Microchip Technology. Confirm RoHS compliance status via the 'e3' suffix if required. Ensure ordering prefixes like MQ, MX, or MV are added only if MIL-PRF-19500/115 screening levels are explicitly needed for the project specifications.

Selection Notes

Select this component when a 1.5 W surface mount Zener diode with a 7.5 V nominal breakdown is required. Consider its low leakage current and tight impedance characteristics for precision regulation. Evaluate the DO-213AB footprint compatibility against existing PCB layouts. Verify that the operating temperature range up to 175°C meets the environmental demands of the target application.

Part Context

This part belongs to the 1N3016BUR-1 through 1N3051BUR-1 series of surface mountable Zener diodes. These devices serve as surface mount equivalents to the JEDEC registered axial lead 1N3016B through 1N3051B in the DO-13 package, offering higher power ratings and improved mounting density while maintaining similar electrical performance profiles.

Replacement Considerations

Direct equivalent replacements include MLL3017B, e3. Axial lead equivalents such as 1N3017B may be used if through-hole packaging is acceptable, though power handling and physical dimensions will differ.