1N5380B/TR12

Overview

The Microsemi Corporation 1N5380B/TR12 is a silicon unidirectional voltage regulator diode belonging to the JEDEC registered 1N5333B through 1N5388B series. It provides a nominal Zener voltage of 120 V with a standard tolerance of ±5%. The device features a maximum power dissipation of 5.0 watts at 25°C and operates within a temperature range of -65°C to +150°C. Packaged in an axial-lead T-18 format, it includes a tape and reel option indicated by the TR suffix.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for versatile integration
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation in circuits requiring high surge stress handling
• Protection of sensitive electronic components from transient overvoltages
• Power supply designs utilizing adequate heat sinking for high DC currents

Procurement Notes

Verify that the ordering suffix matches the required packaging configuration, as the TR designation indicates a tape and reel format rather than bulk. Confirm compliance requirements against specific project standards, noting that RoHS compliant versions utilize an e3 suffix. Ensure the selected variant aligns with the necessary voltage tolerance specifications defined by the B suffix.

Selection Notes

Select this component when a 120 V regulation point is required within the 5-watt power dissipation class. Consider the thermal resistance characteristics and ensure adequate heat sinking is available to support high maximum DC currents. Verify that the axial lead form factor fits the mechanical constraints of the target printed circuit board layout.

Part Context

This part belongs to the Microsemi Scottsdale Division 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series covers a wide selection of voltages from 3.3 to 200 volts. These devices are designed for applications requiring robust performance and are available in various military equivalent screening levels upon request.

Replacement Considerations

Surface mount equivalents such as SMBJ5380B or SMBG5380B are available within the same product family.