1N5374/TR12

Overview

The Microsemi Corporation 1N5374/TR12 is a silicon unidirectional voltage regulator diode belonging to the JEDEC registered 1N5333-5388B series. It provides a nominal Zener voltage of 75 V with a standard tolerance of ±20%. 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 T-18 case, 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 is nonsensitive to electrostatic discharge per MIL-STD-750 Method 1020
• Features flexible axial-lead mounting terminals for versatile installation
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits requiring 5-watt power handling
• Surge protection applications utilizing high peak reverse power dissipation
• General-purpose electronic equipment using axial-leaded components

Procurement Notes

Verify that the ordering suffix matches the required packaging configuration, as the TR designation indicates a tape and reel format. Confirm RoHS compliance status based on the specific suffix variant, as e3 denotes lead-free construction. Ensure the component meets the required moisture sensitivity level and screening standards for the intended application environment.

Selection Notes

Select this component when a 75 V Zener voltage with ±20% tolerance is required. Consider the 5-watt power rating and thermal resistance characteristics for adequate heat sinking. Verify that the axial T-18 package fits the board layout constraints. Check if tighter tolerances or military screening levels are needed, which require different suffixes or prefixes.

Part Context

This part belongs to the 1N5333 through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide voltage selection from 3.3 to 200 volts. These plastic encapsulated devices utilize void-free transfer molded epoxy bodies meeting UL94V-0 standards.

Replacement Considerations

Equivalent parts include the 1N5374A (±10% tolerance) and 1N5374B (±5% tolerance). Surface mount equivalents such as SMBJ5374 or SMBG5374 may be used if package adaptation is feasible.