1N5376B

Overview

The Microsemi Corporation 1N5376B is a silicon 5.0-watt Zener diode with an 87 V nominal voltage and ±5% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a T-18 axial lead package. Electrical characteristics include a maximum dynamic impedance of 75 Ohms at a test current of 15 mA, a maximum reverse leakage current of 0.5 µA at 63 V, and a forward voltage of 1.2 V maximum at 1 A.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for versatile integration
• Withstands high surge stresses and exhibits minimal voltage changes versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

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

Procurement Notes

Verify the specific suffix (e.g., TR for tape and reel) against project requirements, as it dictates packaging but not electrical function. Confirm RoHS compliance status if environmental regulations apply, noting that standard versions may differ from e3 variants. Ensure adequate heat sinking is planned, as steady-state power dissipation depends on thermal management conditions.

Selection Notes

Select this component when a 5-watt power rating and 87 V regulation point are required. The B suffix indicates a standard ±5% tolerance suitable for general applications. Consider the T-18 package dimensions for PCB layout constraints. Evaluate thermal resistance requirements based on the intended mounting method, whether lead-mounted or board-mounted.

Part Context

This device belongs to the JEDEC registered 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. Different suffix letters identify specific voltage tolerances, allowing designers to choose components based on precision requirements within this standardized product family.

Replacement Considerations

Equivalent parts include MX1N5376E3 and MQ1N5376E3, which offer military screening levels and RoHS compliance respectively. Verify that substitute components match the 87 V nominal voltage, 5 W power rating, and T-18 package form factor before implementation.

FAQ

What does the 'B' suffix indicate for the 1N5376B?

The 'B' suffix identifies the device as having a standard voltage tolerance of plus or minus 5 percent.

Is the 1N5376B sensitive to electrostatic discharge?

No, the device is nonsensitive to ESD per MIL-STD-750 Method 1020.