1N5366A/TR8

Overview

The Microchip Technology 1N5366A/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388 series, manufactured by Microsemi. It provides voltage regulation with a nominal Zener voltage of 39 V and a ±10% tolerance indicated by the 'A' suffix. The device operates in a T-18 axial-lead package with a maximum dynamic impedance of 14 ohms at a test current of 30 mA. It withstands a maximum surge current of 170 A and features a reverse leakage current of 500 µA. The component supports an operating temperature range from -65°C to +150°C.

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 through-hole integration
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Applications

• Voltage regulation in power supply circuits
• Protection against voltage spikes and transients
• Reference voltage generation in electronic systems

Procurement Notes

Verify the manufacturer origin, as this part originates from the Microsemi Scottsdale Division now under Microchip Technology. Confirm the specific suffix 'TR8' indicates tape and reel packaging compliant with EIA-296 standards. Ensure the 'A' suffix matches the required ±10% voltage tolerance for the design. Check for RoHS compliance status if environmental regulations apply, noting that standard versions may not be compliant.

Selection Notes

Select this component when a 5-watt power dissipation rating is required for high-current applications. The 39 V nominal voltage and ±10% tolerance suit general-purpose regulation tasks. Consider the T-18 package dimensions for board layout constraints. Evaluate thermal management requirements, as steady-state power dissipation depends on lead length or PCB copper pad specifications.

Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon Zener diodes. These components are designed for applications requiring robust voltage regulation up to 200 volts. The series utilizes plastic encapsulated bodies meeting UL94V-0 flammability ratings. They offer moisture classification Level 1, eliminating the need for dry packing prior to use.

Replacement Considerations

Equivalent parts within the same series include 1N5366B (±5% tolerance), 1N5366C (±2% tolerance), and 1N5366 (±20% tolerance). Surface mount alternatives are available as SMBJ5366B or SMBG5366B.