1N3048BUR-1

Overview

The Microchip Technology 1N3048BUR-1 is a surface mount glass Zener diode in the DO-213AB outline, rated for 1.5 watts power dissipation at 25°C. It provides a nominal Zener voltage of 150 volts with a ±5% tolerance and a test current of 1.7 mA. The device features hermetically sealed double-slug glass construction and operates within a temperature range of -65°C to +175°C. Electrical characteristics include a maximum reverse leakage current of 0.5 µA at 135 V and a typical temperature coefficient of 0.095 %/°C.

Feature Summary

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

Applications

• High-density circuit board mounting
• Voltage regulation over broad operating currents
• High-reliability electronic systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm compliance requirements. The standard part number does not indicate RoHS compliance; add the 'e3' suffix if lead-free terminals are required. Confirm screening prefixes (MQ, MX, MV) if military-grade qualification per MIL-PRF-19500/115 is necessary for the design.

Selection Notes

Select this component when a 150-volt Zener reference is needed in a surface mount form factor. Ensure the design accommodates the 1.5-watt steady-state power rating and the specified thermal resistance values. Verify that the operating environment falls within the -65°C to +175°C range and that the package dimensions match the recommended footprint on FR4 PC boards.

Part Context

This device belongs to the 1N3016BUR-1 through 1N3051BUR-1 series of surface mountable Zener diodes. It serves as the SMD equivalent to the JEDEC registered 1N3016B through 1N3051B axial lead devices but utilizes the DO-213AB outline instead of the DO-13 package. The series offers a wide voltage selection from 6.8 to 200 volts.

Replacement Considerations

Equivalent axial lead parts include the 1N3048B. Surface mount equivalents include the MLL3048B.