1N5377/TR12

Overview

The Microsemi Corporation 1N5377/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, housed in an axial T-18 plastic package with a tape and reel option. It provides voltage regulation at a nominal Zener voltage of 91 V with a ±20% tolerance. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 75 Ohms at a test current of 15 mA. It withstands high surge stresses and offers flexible axial-lead mounting terminals.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for versatile installation
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B with no dry pack required

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement equipment

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm tolerance and packaging details. Confirm RoHS compliance status as standard variants may differ. Ensure the supplier provides traceability documentation consistent with Microsemi or Microchip Technology standards. Validate that the component matches the exact JEDEC registration number for electrical parameter guarantees.

Selection Notes

Select this component when a 91 V Zener voltage with ±20% tolerance is required in a 5-watt axial package. Consider the thermal resistance characteristics and derating curves for high-current applications. Evaluate the tape and reel packaging option for automated assembly processes. Compare against other tolerances if tighter voltage regulation is necessary.

Part Context

This part belongs to the 1N5333-5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide selection of voltages from 3.3 to 200 volts. The 'TR' suffix indicates availability in tape and reel packaging, while the base model follows JEDEC registration standards for reliability and interchangeability.

Replacement Considerations

Equivalent surface mount options are available in the SMBJ5333-SMBJ5388B and SMBG5333B-SMBG5388B series. Military screening levels can be obtained by adding MQ, MX, or MV prefixes to the part number.