1N5366C/TR8

Overview

The Microchip Technology 1N5366C/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across a broad operating current and temperature range. It features a nominal Zener voltage of 39 V with a tight ±2% tolerance, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and utilizes a T-18 axial-lead package. Electrical characteristics include a maximum dynamic impedance of 14 Ohms at a test current of 30 mA, a maximum reverse leakage current of 500 nA, and a maximum regulator current of 3.1 A.

Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Features flexible axial-lead mounting terminals in a void-free transfer molded epoxy body
• Withstands high surge stresses and exhibits minimal changes of voltage versus current
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in electronic systems
• Overvoltage protection applications

Procurement Notes

Verify the component status as this part number belongs to a discontinued series. Confirm that the TR8 suffix indicates tape and reel packaging compliant with EIA-296 standards. Ensure compatibility with existing thermal management designs, as the device requires adequate heat sinking to operate at high maximum DC currents due to its specific thermal resistance characteristics.

Selection Notes

Select this component when precise voltage regulation is required with a tight ±2% tolerance. The 5-watt power dissipation rating supports high-current applications provided sufficient heat sinking is implemented. Verify that the axial lead configuration fits the mechanical constraints of the target PCB layout and that the operating temperature range meets environmental requirements.

Part Context

This device is part of the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers a selection of voltages from 3.3 to 200 volts with various tolerance options identified by suffix letters. These plastic encapsulated diodes are moisture classification Level 1 and do not require dry packing.

Replacement Considerations

Surface mount equivalents such as SMBJ5366B or SMBG5366B are available. RoHS compliant versions can be identified by adding an e3 suffix to the part number.