1N5377CE3/TR12

Overview

The Microsemi Corporation 1N5377CE3/TR12 is a silicon 5.0-watt Zener diode in the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 91 V with a tight tolerance of ±2%. The device features an axial T-18 package and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 75 Ohms, a reverse current of 500 nA, and a maximum regulator current of 52.5 mA.

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 secure installation
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Applications

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

Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance and 'TR12' indicates tape and reel packaging. Confirm the 'C' suffix corresponds to the required ±2% voltage tolerance. Ensure the manufacturer designation matches Microsemi or its successor entity, as corporate acquisitions may affect part sourcing and documentation availability.

Selection Notes

Select this component when a precise 91 V reference is required with tight manufacturing tolerances. The 5-watt power dissipation rating supports high-current applications provided adequate heat sinking is implemented. Verify that the T-18 axial lead form factor fits the target PCB layout constraints and that the specified thermal resistance values align with the system's cooling capabilities.

Part Context

This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi Corporation. The series covers a wide voltage selection from 3.3 V to 200 V. The specific model utilizes a plastic encapsulated body meeting UL94V-0 standards and is designed for robust performance in demanding industrial environments.

Replacement Considerations

Surface mount equivalents are available in the SMBJ5333 to SMBJ5388B series. For military screening requirements, prefixes such as MQ, MX, or MV can be added to part numbers to obtain JAN, JANTX, or JANTXV variants respectively.