1N5378E3/TR12

Overview

The Microsemi Corporation 1N5378E3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 100 V with a ±5% tolerance, indicated by the 'B' suffix. The device features a T-18 axial leaded package and RoHS compliance via the 'e3' suffix. Electrical characteristics include a maximum dynamic impedance of 90 ohms and a maximum reverse current of 0.5 µA. It operates within a temperature range of -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation across broad operating current and temperature ranges
• Withstands high surge stresses and offers flexible axial-lead mounting terminals
• Features minimal changes in voltage versus current as specified by voltage regulation parameters

Applications

• Voltage regulation circuits requiring robust thermal performance
• Power supply protection against high surge stresses
• General purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'TR12' indicates tape and reel packaging per EIA-296 standards, while 'e3' confirms RoHS compliance. Confirm the 'B' suffix corresponds to the necessary ±5% voltage tolerance. Ensure the manufacturer designation aligns with Microsemi Corporation requirements for the specific application environment.

Selection Notes

Select this component when a 5-watt power dissipation rating and a 100 V Zener voltage are required. The T-18 axial package facilitates standard through-hole mounting. Consider the thermal resistance values for heat sinking requirements if operating near maximum steady-state power limits. Verify compatibility with existing circuit designs regarding forward voltage drop and leakage current constraints.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide voltage selection from 3.3 V to 200 V. These devices are designed for applications demanding high reliability and are available in various screening levels and packaging options to suit different industrial and commercial needs.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.