1N3048B-1/TR

Overview

The Microchip Technology 1N3048B-1/TR is a surface mount glass Zener diode with a nominal voltage of 150 V and a power dissipation rating of 1.5 W at 25°C. It utilizes the DO-213AB (MELF) package and operates within a temperature range of -65°C to +175°C. Electrical characteristics include a test current of 1.7 mA, maximum Zener impedance of 1000 Ohms, and maximum reverse leakage current of 0.5 µA. The device features a 5% voltage tolerance and is supplied in tape and reel packaging.

Feature Summary

• Hermetically sealed double-slug glass construction for high-reliability applications
• Metallurgically enhanced contact design providing 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 manufacturer documentation to confirm screening levels and RoHS compliance status. Confirm that the TR suffix indicates tape and reel packaging configuration prior to procurement. Ensure compatibility with standard EIA-481-1-A tape specifications if automated assembly is required.

Selection Notes

Select this component for applications requiring surface mount Zener regulation with high power handling capabilities relative to its package size. Consider the specified thermal resistance values when designing heat dissipation strategies on FR4 PCBs. Evaluate the wide operating temperature range suitability for extreme environmental conditions.

Part Context

This part belongs to the 1N3016BUR-1 through 1N3051BUR-1 series of surface mountable Zener diodes manufactured by Microsemi (Microchip). These devices serve as surface mount equivalents to the JEDEC registered 1N3016 through 1N3051 axial lead diodes, offering similar electrical performance in a compact MELF form factor.

Replacement Considerations

Equivalent axial lead parts include the 1N3048B series. Surface mount alternatives within the same family are MLL3048B or 1N3048BUR-1.