1N5380/TR8

Overview

The Microsemi Corporation 1N5380/TR8 is a silicon unidirectional Zener voltage regulator diode belonging to the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 120 V with a maximum dynamic impedance of 170 ohms and a test current of 10 mA. The device features a T-18 axial lead package, rated for 5.0 watts power dissipation at 25°C, and operates within a temperature range of -65°C to +150°C.

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 suitable for through-hole applications
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring high power handling
• Protection against high surge stresses in electronic systems
• Applications necessitating ESD robustness without dry pack requirements

Procurement Notes

Verify component authenticity by checking manufacturer markings and datasheet specifications. Confirm the TR8 suffix indicates tape and reel packaging compliant with EIA-296 standards. Ensure procurement channels provide valid traceability documentation for this specific part number.

Selection Notes

Select this component when a 120 V Zener voltage is required with a 5-watt power rating. Consider the T-18 package for through-hole mounting and verify thermal management needs based on the specified junction-to-lead thermal resistance. Check tolerance requirements as standard B suffix devices offer ±5% voltage tolerance.

Part Context

This component is part of the Microsemi 1N5333-5388B series of silicon 5-watt Zener diodes. The series covers a wide selection of voltages from 3.3 to 200 volts. The 1N5380 variant specifically targets the 120 V regulation point within this extensive lineup of plastic encapsulated regulators.

Replacement Considerations

Surface mount equivalents are available as SMBJ5380 or SMBG5380. RoHS compliant versions may be identified by adding an e3 suffix to the base part number.