1N5388AE3/TR8

Overview

The Microsemi Corporation 1N5388AE3/TR8 is a silicon 5.0-watt Zener diode in the JEDEC registered 1N5333-5388B series, housed in an axial-leaded T-18 package with tape and reel packaging. It provides voltage regulation at a nominal Zener voltage of 200 V with a ±10% tolerance. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 480 ohms. It includes RoHS compliance via the e3 suffix and meets Level 1 moisture classification standards.

Feature Summary

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

Applications

• Voltage regulation circuits requiring high power dissipation
• High maximum DC current applications with adequate heat sinking
• General-purpose protection against voltage spikes and surges

Procurement Notes

Verify that the component matches the specific 1N5388AE3/TR8 designation, ensuring the 'A' suffix indicates the required ±10% tolerance and the 'e3' suffix confirms lead-free RoHS compliance. Confirm the 'TR8' suffix aligns with the specified tape and reel packaging format. Cross-reference the manufacturer's datasheet for any recent product change notices or end-of-life notifications prior to procurement.

Selection Notes

Select this component when a 200 V Zener voltage with ±10% tolerance is required in a 5-watt axial package. Ensure the application design accommodates the thermal resistance characteristics and allows for adequate heat sinking to handle steady-state power dissipation. Verify that the operating environment falls within the specified -65°C to +150°C temperature range and that the circuit can manage the specified maximum reverse leakage current.

Part Context

This part belongs to the Microsemi 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters. These plastic encapsulated devices are designed for robust performance in demanding environments, offering low thermal resistance and high surge current capabilities compared to lower-power alternatives.

Replacement Considerations

Surface mount equivalents such as SMBJ5388B or SMBG5388B are available within the same family. For direct replacements, verify that the substitute maintains the 200 V Zener voltage, 5 W power rating, and T-18 axial package dimensions. Ensure any alternative component meets the same electrical tolerances and thermal requirements.