1N5382B

Overview

The Microsemi Corporation 1N5382B 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 140 V with a ±5% tolerance indicated by the B suffix. The device operates within a junction-to-lead thermal resistance of 25 °C/W and withstands a maximum surge current of 1500 A. Electrical characteristics include a maximum dynamic impedance of 230 Ohms at a test current of 8.0 mA and a reverse leakage current of 0.5 µA tested at 106 V.

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

Applications

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

Procurement Notes

Verify that the component matches the specific Microsemi part number 1N5382B, ensuring the B suffix confirms the required ±5% voltage tolerance. Confirm the package type corresponds to the T-18 axial lead configuration and check for RoHS compliance if an e3 suffix is present. Ensure the supplier provides documentation verifying the manufacturer origin and electrical specifications align with the official datasheet parameters.

Selection Notes

Select this component when a 140 V Zener voltage with tight ±5% tolerance is required for high-power applications up to 5 watts. Consider the low thermal resistance design for efficient heat dissipation during operation at high DC currents. Evaluate the need for military screening levels, which are available via MQ, MX, or MV prefixes, or surface mount equivalents like SMBJ5382B if space constraints dictate.

Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series offers a selection of voltages from 3.3 to 200 volts, utilizing plastic encapsulated bodies with moisture classification Level 1. The 1N5382B specifically addresses higher voltage regulation needs within this standardized JEDEC registered lineup.

Replacement Considerations

Surface mount equivalents such as SMBJ5382B or SMBG5382B are available for designs requiring alternative mounting styles.