1N5368/TR8

Overview

The Microchip Technology 1N5368/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across broad operating current and temperature ranges. It features a T-18 axial-lead package with a void-free transfer molded thermosetting epoxy body. The device provides a nominal Zener voltage of 47V at a test current of 25mA, with a maximum dynamic impedance of 25 ohms and a maximum reverse leakage current of 0.5µA. It operates within a temperature range of -65°C to +150°C and withstands high surge stresses.

Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals suitable for through-hole applications
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

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 compliance status. Confirm that the TR8 designation aligns with tape and reel packaging requirements. Ensure compatibility with existing thermal management designs due to the 5W power dissipation rating. Check for RoHS compliance if required by the end application standards.

Selection Notes

Select this component when a 47V Zener voltage with ±5% tolerance is required for high-power applications. Consider the T-18 package dimensions and lead length for PCB layout constraints. Evaluate thermal resistance characteristics and derating curves for ambient temperature conditions exceeding 25°C. Compare dynamic impedance specifications against circuit sensitivity requirements.

Part Context

This part belongs to the 1N5333-5388B series of 5-watt silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers a wide selection of voltages from 3.3V to 200V with various tolerance options identified by suffix letters. These devices are JEDEC registered and available in military equivalent screening levels with appropriate prefixes.

Replacement Considerations

Equivalent parts include other 5W Zener diodes with 47V nominal voltage and similar tolerance ratings. Verify package compatibility and thermal performance before substitution.