1N5380E3/TR12

Overview

The Microsemi Corporation 1N5380E3/TR12 is a silicon unidirectional Zener 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 is rated for a maximum power dissipation of 5.0 watts and features an axial-lead T-18 plastic encapsulated package. Electrical characteristics include a maximum dynamic impedance of 170 ohms, a maximum reverse current of 0.5 µA at 91.2 V, and a maximum steady-state regulator current of 39.5 mA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals suitable for high surge stresses
• Offers minimal changes in voltage versus current as specified by voltage regulation parameters
• Capable of operating at high maximum DC currents when adequately heat sunk

Applications

• Voltage regulation in electronic circuits requiring 120 V reference
• High surge stress protection applications
• Power supply output stabilization

Procurement Notes

Verify that the component matches the specific 1N5380E3 designation to ensure correct 120 V rating and RoHS compliance indicated by the e3 suffix. Confirm the TR12 suffix corresponds to tape and reel packaging requirements. Cross-reference the manufacturer part number against official Microsemi documentation to validate authenticity and current production status before procurement.

Selection Notes

Select this component for applications requiring a 120 V Zener voltage with ±5% tolerance. Ensure the design accommodates the 5-watt power dissipation rating and utilizes adequate heat sinking to maintain performance within the -65°C to +150°C operating temperature range. Verify that the axial lead configuration fits the intended PCB layout constraints.

Part Context

This device is part of the Microsemi Scottsdale Division 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters. These plastic encapsulated devices are designed for robust operation with low thermal resistance and moisture classification Level 1.

Replacement Considerations

Equivalent parts within the same series include 1N5379B or 1N5381B for different voltage ratings. Surface mount equivalents such as SMBJ5380B or SMBG5380B are available for space-constrained designs.