1N5377B

Overview

The Microsemi Corporation 1N5377B is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, housed in an axial-lead T-18 plastic package. It provides a nominal Zener voltage of 91 V with a ±5% tolerance. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 75 Ohms at a test current of 15 mA. It withstands high surge stresses and offers minimal voltage change versus current.

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

Applications

• Voltage regulation circuits requiring 5W power dissipation
• Overvoltage protection for industrial equipment
• High reliability applications utilizing military screening prefixes

Procurement Notes

Verify the specific suffix letter on the part number to confirm the exact voltage tolerance, as the 'B' designation indicates ±5%. Confirm whether RoHS compliance is required by checking for the 'e3' suffix. Ensure adequate heat sinking is provided during operation to maintain performance within the specified thermal resistance limits.

Selection Notes

Select this component when a 91V Zener voltage is required in a through-hole T-18 package. Consider the 5W power rating and ensure sufficient thermal management is available. Verify that the ±5% tolerance meets circuit requirements. Check for alternative surface mount equivalents like SMBJ5377B if board space is limited.

Part Context

This component belongs to the Microsemi 1N5333B-1N5388B series of silicon 5-watt Zener diodes. The series covers a wide voltage selection from 3.3V to 200V. These devices are designed for applications requiring robust voltage regulation and high surge current handling capabilities in a standard axial leaded format.

Replacement Considerations

Surface mount equivalents such as SMBJ5377B or SMBG5377B are available from the same manufacturer family.